{"id":4806,"date":"2026-11-03T10:03:33","date_gmt":"2026-11-03T10:03:33","guid":{"rendered":"https:\/\/qualitanceindia.com\/?p=4806"},"modified":"2026-11-03T10:03:33","modified_gmt":"2026-11-03T10:03:33","slug":"bis-certification-for-thermocouple-compensating-cables-is-87841987-qualitance-india","status":"publish","type":"post","link":"https:\/\/qualitanceindia.com\/bis-certification-for-thermocouple-compensating-cables-is-87841987-qualitance-india\/","title":{"rendered":"BIS Certification for Thermocouple Compensating Cables \u2013 IS 8784:1987- Qualitance India"},"content":{"rendered":"<h3>BIS Certification for Thermocouple Compensating Cables \u2013 IS 8784:1987<\/h3>\n<p>Thermocouple compensating cables are widely used in industrial temperature measurement and process control applications. These cables connect thermocouples to temperature measuring instruments, controllers, transmitters and monitoring systems.<\/p>\n<p>They play an important role in maintaining the accuracy and reliability of temperature measurement signals, particularly in industries where precise temperature monitoring is essential.<\/p>\n<p>Thermocouple compensating cables are commonly used in steel plants, power plants, petrochemical industries, cement plants, chemical processing facilities, refineries and other industrial applications.<\/p>\n<p>Since the performance of these cables directly affects temperature measurement accuracy, their conductor materials, insulation, shielding, dimensions and electrical characteristics must comply with prescribed technical requirements.<\/p>\n<p>To ensure product quality and reliability in the Indian market, the Government of India has made BIS certification compulsory for thermocouple compensating cables.<\/p>\n<p>The applicable Indian Standard is <strong>IS 8784:1987 \u2013 Specification for Thermocouple Compensating Cables (Second Revision)<\/strong>.<\/p>\n<p>Manufacturers supplying covered thermocouple compensating cables in India must comply with the applicable Indian Standard and obtain a BIS licence under Scheme-I of the BIS (Conformity Assessment) Regulations, 2018.<\/p>\n<p>This article explains the BIS certification requirements under IS 8784:1987, including testing requirements, product construction, laboratory facilities, Scheme of Inspection and Testing, marking requirements, documentation and the application process.<\/p>\n<h2>1. Is BIS Certification Mandatory for Thermocouple Compensating Cables?<\/h2>\n<p>&lt;badge color=&#8221;success&#8221;&gt;Mandatory BIS Certification&lt;\/badge&gt;<\/p>\n<p>Yes. BIS certification is mandatory for thermocouple compensating cables covered under the <strong>Cables (Quality Control) Order, 2020<\/strong>.<\/p>\n<p>The Department for Promotion of Industry and Internal Trade (DPIIT), Ministry of Commerce and Industry, notified the Cables Quality Control Order through Notification No. S.O. 280(E), dated 21 January 2020.<\/p>\n<p>The Order requires thermocouple compensating cables to conform to IS 8784:1987 and bear the BIS Standard Mark under a licence issued by BIS in accordance with Scheme-I.<\/p>\n<p>The implementation date of the Order was 1 August 2020.<\/p>\n<p>Goods or articles meant for export are excluded under the provisions of the Order.<\/p>\n<h3>Applicable Standard and Certification Details<\/h3>\n<table>\n<tbody>\n<tr>\n<th>Particular<\/th>\n<th>Details<\/th>\n<\/tr>\n<tr>\n<td>Product<\/td>\n<td>Thermocouple Compensating Cables<\/td>\n<\/tr>\n<tr>\n<td>Applicable Indian Standard<\/td>\n<td>IS 8784:1987<\/td>\n<\/tr>\n<tr>\n<td>Standard Title<\/td>\n<td>Specification for Thermocouple Compensating Cables<\/td>\n<\/tr>\n<tr>\n<td>Revision<\/td>\n<td>Second Revision<\/td>\n<\/tr>\n<tr>\n<td>Certification Scheme<\/td>\n<td>BIS Scheme-I (ISI Mark Scheme)<\/td>\n<\/tr>\n<tr>\n<td>Applicable QCO<\/td>\n<td>Cables (Quality Control) Order, 2020<\/td>\n<\/tr>\n<tr>\n<td>QCO Notification<\/td>\n<td>S.O. 280(E), dated 21 January 2020<\/td>\n<\/tr>\n<tr>\n<td>Implementation Date<\/td>\n<td>1 August 2020<\/td>\n<\/tr>\n<tr>\n<td>Certification Authority<\/td>\n<td>Bureau of Indian Standards (BIS)<\/td>\n<\/tr>\n<tr>\n<td>Standard Mark<\/td>\n<td>ISI Mark<\/td>\n<\/tr>\n<tr>\n<td>Application Portal<\/td>\n<td>BIS Manakonline<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Important Regulatory Requirements<\/h3>\n<p>Under the Cables Quality Control Order, 2020:<\/p>\n<ul>\n<li>Manufacturers must obtain a valid BIS licence for covered products.<\/li>\n<li>Products must conform to IS 8784:1987.<\/li>\n<li>The BIS Standard Mark must be applied under an appropriate licence.<\/li>\n<li>The certification requirement applies to covered products manufactured for the Indian market.<\/li>\n<li>Products intended exclusively for export are excluded under the Order.<\/li>\n<\/ul>\n<p>The BIS licence is issued to the manufacturing unit and covers the approved product scope.<\/p>\n<p>Importers, distributors and traders should ensure that covered cables are sourced from manufacturers holding a valid BIS licence.<\/p>\n<h2>2. Applicable BIS Scheme of Testing and Inspection \u2013 IS 8784:1987<\/h2>\n<p>BIS has issued the following Scheme of Testing and Inspection for thermocouple compensating cables:<\/p>\n<p><strong>Document No.: STI\/8784\/1 \u2013 August 2009<\/strong><\/p>\n<p>The Scheme of Testing and Inspection provides guidance on:<\/p>\n<ul>\n<li>Laboratory requirements.<\/li>\n<li>Testing and inspection records.<\/li>\n<li>Quality control arrangements.<\/li>\n<li>Product marking.<\/li>\n<li>Control unit definition.<\/li>\n<li>Material conformity.<\/li>\n<li>Testing frequency.<\/li>\n<li>Sample requirements.<\/li>\n<li>Rejection of non-conforming products.<\/li>\n<li>Production data reporting.<\/li>\n<\/ul>\n<p>The document specifies that manufacturers must maintain a suitably equipped and staffed laboratory for conducting the tests prescribed under IS 8784:1987.<\/p>\n<h3>Licence Scope<\/h3>\n<p>The licence scope is based on the product description and approved varieties manufactured at the factory.<\/p>\n<p>Important product characteristics include:<\/p>\n<ul>\n<li>Type of thermocouple.<\/li>\n<li>Material of leads.<\/li>\n<li>Number of cores.<\/li>\n<li>Number of wires.<\/li>\n<li>Wire diameter.<\/li>\n<li>Nominal cross-sectional area of conductor.<\/li>\n<li>Insulation and sheath.<\/li>\n<li>Shielding arrangement.<\/li>\n<li>Drain wire arrangement.<\/li>\n<li>Armour, wherever applicable.<\/li>\n<li>Cable dimensions.<\/li>\n<\/ul>\n<p>The exact product varieties and scope should be declared in the BIS application and assessed according to the applicable Indian Standard and BIS instructions.<\/p>\n<h2>3. What Are Thermocouple Compensating Cables?<\/h2>\n<p>&lt;AsyncImage query=&#8221;industrial thermocouple compensating cables multicolor insulated instrumentation cables reels factory&#8221; aspectRatio=&#8221;16:9&#8243; width=&#8221;100%&#8221; maxHeight={220}\/&gt;<\/p>\n<p>Thermocouple compensating cables are special-purpose electrical cables designed to connect thermocouples with temperature measurement instruments.<\/p>\n<p>A thermocouple generates a small electromotive force (EMF) corresponding to the temperature difference between its measuring junction and reference junction.<\/p>\n<p>Compensating cables are used to extend the thermocouple circuit while minimizing additional thermal EMF errors.<\/p>\n<p>These cables are designed using suitable conductor materials and insulation systems to maintain the required measurement characteristics.<\/p>\n<h3>Major Applications<\/h3>\n<p>Thermocouple compensating cables are commonly used in:<\/p>\n<ul>\n<li>Steel and metal processing industries.<\/li>\n<li>Thermal power plants.<\/li>\n<li>Cement manufacturing plants.<\/li>\n<li>Petrochemical industries.<\/li>\n<li>Oil and gas installations.<\/li>\n<li>Chemical processing plants.<\/li>\n<li>Glass manufacturing industries.<\/li>\n<li>Pharmaceutical manufacturing.<\/li>\n<li>Industrial furnaces and kilns.<\/li>\n<li>Temperature monitoring and automation systems.<\/li>\n<li>Industrial instrumentation and control systems.<\/li>\n<\/ul>\n<h3>Major Components of Thermocouple Compensating Cables<\/h3>\n<p>A typical thermocouple compensating cable may consist of the following components:<\/p>\n<ol start=\"1\">\n<li>Conductor \u2013 carries the thermocouple signal.<\/li>\n<li>Insulation \u2013 electrically isolates individual conductors.<\/li>\n<li>Core arrangement \u2013 defines the number of conductors and cores.<\/li>\n<li>Shielding \u2013 provides protection against electromagnetic interference.<\/li>\n<li>Drain Wire \u2013 provides continuity for the shielding arrangement, where applicable.<\/li>\n<li>Outer Sheath \u2013 provides mechanical and environmental protection.<\/li>\n<li>Armour \u2013 provides additional mechanical protection, where applicable.<\/li>\n<\/ol>\n<p>The actual construction depends on the cable design and intended application.<\/p>\n<h2>4. Technical Requirements Under IS 8784:1987<\/h2>\n<p>IS 8784:1987 specifies technical requirements relating to conductor materials, insulation, shielding, dimensions, electrical performance and testing of thermocouple compensating cables.<\/p>\n<p>Some important requirements include:<\/p>\n<h3>A. Type of Thermocouple<\/h3>\n<p>The cable must be suitable for the specified type of thermocouple.<\/p>\n<p>The thermocouple type determines the required conductor characteristics and compensating properties.<\/p>\n<p>The manufacturer must identify the thermocouple type for which the cable is designed.<\/p>\n<h3>B. Conductor Requirements<\/h3>\n<p>The conductors must comply with the applicable material and construction requirements specified in the standard.<\/p>\n<p>Important parameters include:<\/p>\n<ul>\n<li>Conductor material.<\/li>\n<li>Number of conductors.<\/li>\n<li>Wire diameter.<\/li>\n<li>Nominal cross-sectional area.<\/li>\n<li>Conductor resistance.<\/li>\n<li>Thermal EMF characteristics.<\/li>\n<\/ul>\n<h3>C. Insulation Requirements<\/h3>\n<p>The insulation must provide suitable electrical separation between conductors.<\/p>\n<p>The standard specifies requirements relating to insulation materials and thickness.<\/p>\n<p>The insulation must maintain its electrical and physical characteristics under the specified operating conditions.<\/p>\n<h3>D. Sheath Requirements<\/h3>\n<p>The outer sheath provides mechanical protection to the cable.<\/p>\n<p>The standard specifies requirements relating to sheath construction and thickness.<\/p>\n<p>The sheath must comply with the applicable dimensional and performance requirements.<\/p>\n<h3>E. Shielding Requirements<\/h3>\n<p>Thermocouple compensating cables may incorporate shielding to minimize external electrical interference.<\/p>\n<p>The shielding arrangement must comply with the applicable requirements specified in the standard.<\/p>\n<h3>F. Drain Wire Requirements<\/h3>\n<p>Where a drain wire is provided, it must comply with the relevant continuity requirements.<\/p>\n<p>Drain wire continuity is important for maintaining the effectiveness of the cable shielding arrangement.<\/p>\n<h3>G. Dimensional Requirements<\/h3>\n<p>The standard specifies dimensional requirements for:<\/p>\n<ul>\n<li>Single wire diameter.<\/li>\n<li>Wire tolerances.<\/li>\n<li>Wire ovality.<\/li>\n<li>Insulation thickness.<\/li>\n<li>Sheath thickness.<\/li>\n<li>Overall cable dimensions.<\/li>\n<\/ul>\n<h3>H. Colour Coding<\/h3>\n<p>The cable conductors must follow the applicable colour identification requirements specified in IS 8784:1987.<\/p>\n<p>Correct colour identification is important for proper thermocouple circuit connection and installation.<\/p>\n<h3>I. Armouring<\/h3>\n<p>Where armouring is provided, the armour wires must comply with the applicable requirements of IS 3975.<\/p>\n<h3>J. Electrical and Thermal Performance<\/h3>\n<p>The cable must satisfy the prescribed requirements relating to:<\/p>\n<ul>\n<li>Thermal EMF.<\/li>\n<li>Conductor resistance.<\/li>\n<li>Insulation resistance.<\/li>\n<li>Drain wire continuity.<\/li>\n<li>High-voltage performance.<\/li>\n<li>Heat shock resistance.<\/li>\n<\/ul>\n<h2>5. Testing Requirements for BIS Certification<\/h2>\n<p>Testing is one of the most important stages of BIS certification for thermocouple compensating cables.<\/p>\n<p>As per IS 8784:1987 and the Scheme of Testing and Inspection STI\/8784\/1, August 2009, the following important tests are identified.<\/p>\n<table>\n<tbody>\n<tr>\n<th>Sr. No.<\/th>\n<th>Test Parameter<\/th>\n<th>Clause \/ Reference<\/th>\n<\/tr>\n<tr>\n<td>1<\/td>\n<td>Thermal EMF Test<\/td>\n<td>Clause 14.2<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>Resistance Test<\/td>\n<td>Clause 14.3<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>Thickness of Insulation<\/td>\n<td>Clause 14.4<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>Thickness of Sheath<\/td>\n<td>Clause 14.4<\/td>\n<\/tr>\n<tr>\n<td>5<\/td>\n<td>Insulation Resistance Test<\/td>\n<td>Clause 14.5<\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td>Drain Wire Continuity Test<\/td>\n<td>Clause 14.6<\/td>\n<\/tr>\n<tr>\n<td>7<\/td>\n<td>High Voltage Test<\/td>\n<td>Clause 14.7<\/td>\n<\/tr>\n<tr>\n<td>8<\/td>\n<td>Heat Shock Test<\/td>\n<td>Clause 14.8<\/td>\n<\/tr>\n<tr>\n<td>9<\/td>\n<td>Dimension of Single Wire<\/td>\n<td>Clause 9.1<\/td>\n<\/tr>\n<tr>\n<td>10<\/td>\n<td>Dimension of Cable<\/td>\n<td>Clause 9.3<\/td>\n<\/tr>\n<tr>\n<td>11<\/td>\n<td>Tests for Armour Wires<\/td>\n<td>IS 3975<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The following are important testing parameters for BIS certification.<\/p>\n<h3>A. Thermal EMF Test<\/h3>\n<p>&lt;AsyncImage query=&#8221;thermocouple cable thermal electromotive force emf calibration testing laboratory precision temperature measurement setup&#8221; aspectRatio=&#8221;16:9&#8243; width=&#8221;100%&#8221; maxHeight={170}\/&gt;<\/p>\n<p>Thermal EMF testing is one of the most important tests for thermocouple compensating cables.<\/p>\n<p>The test evaluates the thermal electromotive force generated by the cable under the specified temperature conditions.<\/p>\n<p>The purpose is to ensure that the compensating cable provides the required electrical characteristics for accurate temperature measurement.<\/p>\n<h3>B. Resistance Test<\/h3>\n<p>&lt;AsyncImage query=&#8221;digital micro ohmmeter electrical cable conductor resistance testing laboratory&#8221; aspectRatio=&#8221;16:9&#8243; width=&#8221;100%&#8221; maxHeight={170}\/&gt;<\/p>\n<p>This test determines the electrical resistance of the cable conductors.<\/p>\n<p>The resistance value is important for evaluating the electrical characteristics of the cable and ensuring conformity with the applicable requirements.<\/p>\n<h3>C. Thickness of Insulation Test<\/h3>\n<p>This test verifies the thickness of insulation around individual conductors.<\/p>\n<p>The insulation thickness must comply with the applicable dimensional requirements.<\/p>\n<h3>D. Thickness of Sheath Test<\/h3>\n<p>The test checks the thickness of the outer sheath.<\/p>\n<p>The sheath must provide adequate protection and meet the specified dimensional requirements.<\/p>\n<h3>E. Insulation Resistance Test<\/h3>\n<p>&lt;AsyncImage query=&#8221;high voltage insulation resistance tester megger electrical cable laboratory testing&#8221; aspectRatio=&#8221;16:9&#8243; width=&#8221;100%&#8221; maxHeight={170}\/&gt;<\/p>\n<p>This test evaluates the electrical insulation resistance of the cable.<\/p>\n<p>Insulation resistance is checked before and after the high-voltage test, as specified in the applicable test procedure.<\/p>\n<h3>F. Drain Wire Continuity Test<\/h3>\n<p>This test verifies the electrical continuity of the drain wire.<\/p>\n<p>It ensures that the drain wire maintains the required electrical connection along the cable length.<\/p>\n<h3>G. High Voltage Test<\/h3>\n<p>The high-voltage test evaluates the dielectric strength of the cable insulation.<\/p>\n<p>The test helps verify that the cable can withstand the prescribed electrical voltage without insulation breakdown.<\/p>\n<h3>H. Heat Shock Test<\/h3>\n<p>&lt;AsyncImage query=&#8221;industrial laboratory cable heat shock testing oven electrical cable specimen&#8221; aspectRatio=&#8221;16:9&#8243; width=&#8221;100%&#8221; maxHeight={170}\/&gt;<\/p>\n<p>The heat shock test evaluates the behaviour of cable insulation and sheath materials when subjected to the specified heating conditions.<\/p>\n<p>The purpose is to ensure that the cable materials maintain the required performance under thermal exposure.<\/p>\n<h3>I. Dimension of Single Wire<\/h3>\n<p>The diameter and dimensional characteristics of individual wires are checked against the requirements of IS 8784:1987.<\/p>\n<p>The test includes applicable requirements for wire dimensions, tolerances and ovality.<\/p>\n<h3>J. Dimension of Cable<\/h3>\n<p>The overall cable dimensions are measured to verify conformity with the applicable dimensional requirements.<\/p>\n<h3>K. Armour Wire Test<\/h3>\n<p>For armoured cables, the armour wires must comply with the applicable requirements of IS 3975.<\/p>\n<p>The Scheme of Testing and Inspection provides that testing of armour wires may not be necessary when they are received with an ISI Mark, provided appropriate records are maintained.<\/p>\n<h2>6. Sample Quantity Required for BIS Testing<\/h2>\n<p>Unlike some product standards that specify a fixed number of product samples, the Scheme of Testing and Inspection for IS 8784:1987 prescribes different sampling frequencies for different tests.<\/p>\n<p>According to STI\/8784\/1, August 2009:<\/p>\n<table>\n<tbody>\n<tr>\n<th>Test Parameter<\/th>\n<th>Sample Quantity<\/th>\n<th>Frequency<\/th>\n<\/tr>\n<tr>\n<td>Resistance Test<\/td>\n<td>1<\/td>\n<td>Each length of finished cable<\/td>\n<\/tr>\n<tr>\n<td>Insulation Resistance before HV Test<\/td>\n<td>1<\/td>\n<td>Each length of finished cable<\/td>\n<\/tr>\n<tr>\n<td>Drain Wire Continuity<\/td>\n<td>1<\/td>\n<td>Each length of finished cable<\/td>\n<\/tr>\n<tr>\n<td>Dimension of Single Wire<\/td>\n<td>1<\/td>\n<td>Each control unit<\/td>\n<\/tr>\n<tr>\n<td>Dimension of Cable<\/td>\n<td>1<\/td>\n<td>Each control unit<\/td>\n<\/tr>\n<tr>\n<td>Thermal EMF Test<\/td>\n<td>1<\/td>\n<td>Each control unit<\/td>\n<\/tr>\n<tr>\n<td>Thickness of Insulation and Sheath<\/td>\n<td>1<\/td>\n<td>Each control unit<\/td>\n<\/tr>\n<tr>\n<td>High Voltage Test<\/td>\n<td>1<\/td>\n<td>Each control unit<\/td>\n<\/tr>\n<tr>\n<td>Insulation Resistance before and after HV Test<\/td>\n<td>1<\/td>\n<td>Each control unit<\/td>\n<\/tr>\n<tr>\n<td>Heat Shock Test<\/td>\n<td>1<\/td>\n<td>Cable of each size and type manufactured in a fortnight or 25 delivery lengths of the same size and type, whichever is less<\/td>\n<\/tr>\n<tr>\n<td>Armour Wire Test<\/td>\n<td>1<\/td>\n<td>Each length of finished cable of each size and type manufactured from the same consignment of armour wires<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Important Conditions for Sample Testing<\/h3>\n<ol start=\"1\">\n<li>One sample is specified for the applicable individual testing requirements in the SIT.<\/li>\n<li>Resistance, insulation resistance before the high-voltage test and drain wire continuity tests are conducted on each finished cable length.<\/li>\n<li>Dimensional and thermal EMF tests are conducted on samples selected from each control unit.<\/li>\n<li>Heat shock testing is carried out according to the specified production frequency.<\/li>\n<li>If a sample fails, double the number of samples from the same control unit must be tested for that requirement.<\/li>\n<li>If there is any further failure during retesting, the control unit must not be marked.<\/li>\n<\/ol>\n<h3>Important Clarification<\/h3>\n<p>The above sampling requirements relate to routine factory testing under STI\/8784\/1.<\/p>\n<p>The quantity and length of samples required for initial BIS certification testing and factory inspection must be confirmed with the concerned BIS office and testing laboratory according to the applicable certification requirements.<\/p>\n<h2>7. Product Grouping Guidelines Under IS 8784:1987<\/h2>\n<p>Product grouping is important for manufacturers producing thermocouple compensating cables in different types, sizes and constructions.<\/p>\n<p>Unlike some other product standards, the available August 2009 Scheme of Testing and Inspection does not prescribe a separate detailed grouping matrix or a fixed sample-selection table for initial licence coverage.<\/p>\n<p>The manufacturer should therefore declare the product varieties proposed for certification and provide the necessary technical information for BIS assessment.<\/p>\n<h3>A. Type of Thermocouple<\/h3>\n<p>The manufacturer should identify the thermocouple type for which the cable is designed.<\/p>\n<h3>B. Conductor Material<\/h3>\n<p>The conductor material and applicable material specifications should be declared.<\/p>\n<h3>C. Number of Cores<\/h3>\n<p>The manufacturer should specify the number of cores in the cable.<\/p>\n<h3>D. Number of Wires and Wire Diameter<\/h3>\n<p>The number of wires and individual wire diameter should be identified.<\/p>\n<h3>E. Nominal Cross-Sectional Area<\/h3>\n<p>The nominal cross-sectional area of the conductor must be specified.<\/p>\n<h3>F. Insulation and Sheath<\/h3>\n<p>The insulation and sheath materials and their applicable dimensions should be declared.<\/p>\n<h3>G. Shielding and Drain Wire<\/h3>\n<p>The manufacturer should provide details of the shielding and drain wire arrangement, wherever applicable.<\/p>\n<h3>H. Armouring<\/h3>\n<p>Details of the armour construction should be provided for armoured cable varieties.<\/p>\n<h3>Practical Example of Product Scope Declaration<\/h3>\n<p>Consider a manufacturer producing the following cable varieties:<\/p>\n<table>\n<tbody>\n<tr>\n<th>Product<\/th>\n<th>Thermocouple Type<\/th>\n<th>Core<\/th>\n<th>Conductor Size<\/th>\n<\/tr>\n<tr>\n<td>Model A<\/td>\n<td>Type K<\/td>\n<td>Twin Core<\/td>\n<td>0.5 sq. mm<\/td>\n<\/tr>\n<tr>\n<td>Model B<\/td>\n<td>Type K<\/td>\n<td>Twin Core<\/td>\n<td>1.0 sq. mm<\/td>\n<\/tr>\n<tr>\n<td>Model C<\/td>\n<td>Type J<\/td>\n<td>Twin Core<\/td>\n<td>0.5 sq. mm<\/td>\n<\/tr>\n<tr>\n<td>Model D<\/td>\n<td>Type J<\/td>\n<td>Multi Core<\/td>\n<td>1.0 sq. mm<\/td>\n<\/tr>\n<tr>\n<td>Model E<\/td>\n<td>Type T<\/td>\n<td>Twin Core<\/td>\n<td>0.5 sq. mm<\/td>\n<\/tr>\n<tr>\n<td>Model F<\/td>\n<td>Type K<\/td>\n<td>Multi Core<\/td>\n<td>1.5 sq. mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The manufacturer should declare all proposed varieties with complete construction and technical details.<\/p>\n<p>The final licence scope and sample selection will be determined by BIS based on the applicable requirements and assessment of the manufacturing facilities.<\/p>\n<h2>8. Factory Laboratory Requirements<\/h2>\n<p>The manufacturer must maintain a suitably equipped and staffed laboratory for carrying out the tests specified in IS 8784:1987.<\/p>\n<p>As per Clause 1 of STI\/8784\/1, August 2009, the laboratory must be capable of conducting different tests specified in the Indian Standard.<\/p>\n<p>The manufacturer must also ensure that:<\/p>\n<ul>\n<li>Testing equipment is periodically checked.<\/li>\n<li>Calibration records are maintained.<\/li>\n<li>Testing is performed according to the prescribed methods.<\/li>\n<li>Test and inspection records are properly maintained.<\/li>\n<li>Suitable quality-control arrangements are implemented.<\/li>\n<\/ul>\n<h3>Major Laboratory Equipment<\/h3>\n<p>The following equipment and facilities are relevant for testing thermocouple compensating cables.<\/p>\n<table>\n<tbody>\n<tr>\n<th>Equipment \/ Facility<\/th>\n<th>Purpose<\/th>\n<\/tr>\n<tr>\n<td>Thermal EMF Testing Setup<\/td>\n<td>Thermal EMF Test<\/td>\n<\/tr>\n<tr>\n<td>Precision Resistance Meter<\/td>\n<td>Resistance Test<\/td>\n<\/tr>\n<tr>\n<td>Micrometer<\/td>\n<td>Insulation and Sheath Thickness<\/td>\n<\/tr>\n<tr>\n<td>Vernier Calliper<\/td>\n<td>Dimensional Measurement<\/td>\n<\/tr>\n<tr>\n<td>Insulation Resistance Tester<\/td>\n<td>Insulation Resistance Test<\/td>\n<\/tr>\n<tr>\n<td>High Voltage Tester<\/td>\n<td>High Voltage Test<\/td>\n<\/tr>\n<tr>\n<td>Continuity Tester \/ Multimeter<\/td>\n<td>Drain Wire Continuity<\/td>\n<\/tr>\n<tr>\n<td>Heat Shock Testing Oven<\/td>\n<td>Heat Shock Test<\/td>\n<\/tr>\n<tr>\n<td>Wire Diameter Measuring Equipment<\/td>\n<td>Single Wire Dimensions<\/td>\n<\/tr>\n<tr>\n<td>Cable Measuring Instruments<\/td>\n<td>Overall Cable Dimensions<\/td>\n<\/tr>\n<tr>\n<td>Armour Wire Testing Facility<\/td>\n<td>Armour Wire Verification, where applicable<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The above list is indicative and should not be treated as an exhaustive BIS equipment list.<\/p>\n<p>The exact equipment requirements should be established according to the test methods specified in IS 8784:1987.<\/p>\n<h3>Factory Testing<\/h3>\n<p>The manufacturer must establish appropriate in-house testing facilities and maintain records of testing and inspection.<\/p>\n<p>All testing apparatus must be periodically checked and calibrated.<\/p>\n<p>The BIS inspection may evaluate:<\/p>\n<ul>\n<li>Manufacturing machinery.<\/li>\n<li>Conductor processing facilities.<\/li>\n<li>Insulation and sheathing facilities.<\/li>\n<li>Cabling and shielding arrangements.<\/li>\n<li>Testing equipment.<\/li>\n<li>Laboratory personnel.<\/li>\n<li>Calibration records.<\/li>\n<li>Quality control documentation.<\/li>\n<\/ul>\n<h2>9. Scheme of Inspection and Testing (SIT)<\/h2>\n<p>The manufacturer must implement the Scheme of Testing and Inspection prescribed under STI\/8784\/1, August 2009.<\/p>\n<p>The SIT defines the control unit, sampling frequency, testing requirements and production quality-control arrangements.<\/p>\n<h3>A. Laboratory Requirements<\/h3>\n<p>A suitably equipped and staffed laboratory must be maintained for conducting the tests specified in IS 8784:1987.<\/p>\n<p>Testing equipment must be periodically checked and calibrated.<\/p>\n<h3>B. Control Unit<\/h3>\n<p>As per Clause 5.1 of STI\/8784\/1:<\/p>\n<p><strong>Cable of each size and type manufactured under similar conditions from the same consignment of raw materials during a day shall constitute one control unit.<\/strong><\/p>\n<p>This definition is important for determining sampling frequency and production inspection requirements.<\/p>\n<h3>C. Recommended Levels of Control<\/h3>\n<p>The following requirements are based on Table 1 of STI\/8784\/1, August 2009.<\/p>\n<table>\n<tbody>\n<tr>\n<th>Test Parameter<\/th>\n<th>Number of Samples<\/th>\n<th>Frequency<\/th>\n<\/tr>\n<tr>\n<td>Resistance Test<\/td>\n<td>1<\/td>\n<td>Each length of finished cable<\/td>\n<\/tr>\n<tr>\n<td>Insulation Resistance before HV Test<\/td>\n<td>1<\/td>\n<td>Each length of finished cable<\/td>\n<\/tr>\n<tr>\n<td>Drain Wire Continuity Test<\/td>\n<td>1<\/td>\n<td>Each length of finished cable<\/td>\n<\/tr>\n<tr>\n<td>Dimension of Single Wire<\/td>\n<td>1<\/td>\n<td>Each control unit<\/td>\n<\/tr>\n<tr>\n<td>Dimension of Cable<\/td>\n<td>1<\/td>\n<td>Each control unit<\/td>\n<\/tr>\n<tr>\n<td>Armour Wire Test<\/td>\n<td>1<\/td>\n<td>Each length of finished cable of each size and type from the same consignment of armour wires<\/td>\n<\/tr>\n<tr>\n<td>Thermal EMF Test<\/td>\n<td>1<\/td>\n<td>Each control unit<\/td>\n<\/tr>\n<tr>\n<td>Thickness of Insulation and Sheath<\/td>\n<td>1<\/td>\n<td>Each control unit<\/td>\n<\/tr>\n<tr>\n<td>High Voltage Test<\/td>\n<td>1<\/td>\n<td>Each control unit<\/td>\n<\/tr>\n<tr>\n<td>Insulation Resistance before and after HV Test<\/td>\n<td>1<\/td>\n<td>Each control unit<\/td>\n<\/tr>\n<tr>\n<td>Heat Shock Test<\/td>\n<td>1<\/td>\n<td>Each size and type manufactured in a fortnight or 25 delivery lengths, whichever is less<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>D. Double Sampling in Case of Failure<\/h3>\n<p>The SIT specifies that if any sample fails in a particular requirement:<\/p>\n<ol start=\"1\">\n<li>Double the number of samples from the same control unit must be tested for that requirement.<\/li>\n<li>If there is any further failure during retesting, the control unit must not be marked.<\/li>\n<\/ol>\n<h3>E. Material Control<\/h3>\n<p>The various materials used in cable manufacturing must conform to the applicable requirements of Clauses 4 to 8 of IS 8784.<\/p>\n<p>Materials may be:<\/p>\n<ul>\n<li>BIS marked.<\/li>\n<li>Accompanied by test certificates showing conformity with the relevant specification.<\/li>\n<li>Tested by the manufacturer in its own laboratory.<\/li>\n<li>Tested in an independent laboratory to establish conformity.<\/li>\n<\/ul>\n<h3>F. Records to Be Maintained<\/h3>\n<p>Manufacturers should maintain:<\/p>\n<ol start=\"1\">\n<li>Raw material inspection records.<\/li>\n<li>Conductor material test certificates.<\/li>\n<li>Insulation material records.<\/li>\n<li>Sheath material records.<\/li>\n<li>Thermal EMF test records.<\/li>\n<li>Resistance test records.<\/li>\n<li>Insulation resistance test records.<\/li>\n<li>Drain wire continuity records.<\/li>\n<li>High-voltage test records.<\/li>\n<li>Heat shock test records.<\/li>\n<li>Dimensional inspection records.<\/li>\n<li>Calibration certificates.<\/li>\n<li>Control unit production records.<\/li>\n<li>Non-conforming product records.<\/li>\n<li>Production and marking records.<\/li>\n<\/ol>\n<h3>G. Rejection of Non-Conforming Products<\/h3>\n<p>A separate record must be maintained for production rejected due to non-conformity.<\/p>\n<p>The record should include:<\/p>\n<ul>\n<li>Details of rejected products.<\/li>\n<li>Nature of non-conformity.<\/li>\n<li>Quantity rejected.<\/li>\n<li>Reason for rejection.<\/li>\n<li>Method of disposal.<\/li>\n<\/ul>\n<p>Non-conforming products must not be stored together with conforming products.<\/p>\n<h3>H. Production Data Submission<\/h3>\n<p>As per the SIT, the licensee must submit production details to BIS at the end of each operative year of the licence.<\/p>\n<p>The production statement includes quantities produced, quantities marked and exported, and the corresponding trade value, authenticated by a Chartered Accountant.<\/p>\n<h2>10. Packing and Marking Requirements<\/h2>\n<p>After obtaining the BIS licence, manufacturers must ensure that thermocouple compensating cables are marked according to IS 8784:1987 and the licence conditions.<\/p>\n<p>The BIS Standard Mark must be applied to labels attached to reels or coils.<\/p>\n<h3>A. Marking on Each Reel or Coil<\/h3>\n<p>As per Clause 4.1 of STI\/8784\/1, the label attached to each reel or coil must contain:<\/p>\n<ol start=\"1\">\n<li>Manufacturer&#8217;s name or trademark, if any.<\/li>\n<li>Type of thermocouple.<\/li>\n<li>Material of the leads.<\/li>\n<li>Number of cores.<\/li>\n<li>Number of wires and wire diameter.<\/li>\n<li>Nominal cross-sectional area of conductor.<\/li>\n<li>Length of cable contained in the reel or coil.<\/li>\n<li>BIS licence number (CM\/L number).<\/li>\n<li>Date of manufacture or control unit number for traceability.<\/li>\n<\/ol>\n<h3>B. BIS Standard Mark<\/h3>\n<p>The BIS Standard Mark must be applied to the labels attached to reels or coils.<\/p>\n<p>The Standard Mark must only be applied when the entire cable length contained in the reel or coil conforms to the applicable requirements.<\/p>\n<p>The SIT also specifies that the Standard Mark should be applied in such a manner that, as far as possible, it gets destroyed when the reel or coil is opened for using the cable.<\/p>\n<h3>C. Information Supplied Along with Cables<\/h3>\n<p>Additional information required under Clause 12 of IS 8784:1987 must be supplied along with the cables.<\/p>\n<h3>D. Traceability Requirements<\/h3>\n<p>The manufacturer should maintain proper traceability between:<\/p>\n<ul>\n<li>Raw material consignments.<\/li>\n<li>Production batches.<\/li>\n<li>Control units.<\/li>\n<li>Finished cable lengths.<\/li>\n<li>Testing records.<\/li>\n<li>Reel or coil identification.<\/li>\n<li>BIS marking records.<\/li>\n<\/ul>\n<p>This helps establish product conformity during factory inspection and BIS surveillance.<\/p>\n<h2>11. Documents Required for BIS Certification of Thermocouple Compensating Cables<\/h2>\n<p>Manufacturers should prepare the following documents before submitting their BIS application.<\/p>\n<h3>A. Company and Legal Documents<\/h3>\n<ul>\n<li>Certificate of Incorporation \/ Company Registration.<\/li>\n<li>PAN Card.<\/li>\n<li>GST Registration Certificate.<\/li>\n<li>Factory Address Proof.<\/li>\n<li>Authorised Signatory Details.<\/li>\n<li>Authorisation Letter or Board Resolution, wherever applicable.<\/li>\n<li>Company Profile.<\/li>\n<li>Ownership or Rent Agreement of Manufacturing Premises.<\/li>\n<\/ul>\n<h3>B. Manufacturing Documents<\/h3>\n<ul>\n<li>Manufacturing Process Flow Chart.<\/li>\n<li>Detailed Manufacturing Process Description.<\/li>\n<li>Factory Layout Plan.<\/li>\n<li>List of Manufacturing Machinery.<\/li>\n<li>Production Capacity Details.<\/li>\n<li>Details of Conductor Manufacturing Facilities.<\/li>\n<li>Insulation and Sheathing Facilities.<\/li>\n<li>Cabling and Stranding Machinery Details.<\/li>\n<li>Shielding and Armouring Facilities, wherever applicable.<\/li>\n<li>Details of Raw Material Procurement.<\/li>\n<li>Manufacturing Process Control Details.<\/li>\n<\/ul>\n<h3>C. Product Technical Documents<\/h3>\n<ul>\n<li>Product Technical Specifications.<\/li>\n<li>Cable Construction Details.<\/li>\n<li>Thermocouple Type Details.<\/li>\n<li>Conductor Material Specifications.<\/li>\n<li>Number of Cores.<\/li>\n<li>Number of Wires.<\/li>\n<li>Wire Diameter.<\/li>\n<li>Nominal Cross-Sectional Area.<\/li>\n<li>Insulation Material Specifications.<\/li>\n<li>Sheath Material Specifications.<\/li>\n<li>Shielding Arrangement Details.<\/li>\n<li>Drain Wire Details.<\/li>\n<li>Armour Construction Details, wherever applicable.<\/li>\n<li>Cable Dimension Details.<\/li>\n<li>Colour Coding Details.<\/li>\n<li>Product Drawings and Cross-Sectional Drawings.<\/li>\n<li>Product Photographs.<\/li>\n<li>Reel and Coil Packing Details.<\/li>\n<\/ul>\n<h3>D. Quality Control Documents<\/h3>\n<ul>\n<li>Quality Control Manual.<\/li>\n<li>Scheme of Testing and Inspection.<\/li>\n<li>Control Unit Definition.<\/li>\n<li>List of Testing Equipment.<\/li>\n<li>Equipment Calibration Certificates.<\/li>\n<li>In-House Laboratory Details.<\/li>\n<li>Raw Material Inspection Procedure.<\/li>\n<li>Conductor Inspection Procedure.<\/li>\n<li>Insulation and Sheath Inspection Procedure.<\/li>\n<li>Thermal EMF Testing Procedure.<\/li>\n<li>Resistance Testing Procedure.<\/li>\n<li>Insulation Resistance Testing Procedure.<\/li>\n<li>High Voltage Testing Procedure.<\/li>\n<li>Heat Shock Testing Procedure.<\/li>\n<li>Dimensional Inspection Procedure.<\/li>\n<li>Non-Conforming Product Control Procedure.<\/li>\n<li>Test Records and Inspection Reports.<\/li>\n<\/ul>\n<h3>E. BIS Application Documents<\/h3>\n<ul>\n<li>BIS Application Form and Declarations.<\/li>\n<li>Product Scope Details.<\/li>\n<li>Details of Proposed Cable Varieties.<\/li>\n<li>Manufacturing Unit Details.<\/li>\n<li>Testing Facilities Details.<\/li>\n<li>Applicable Undertakings and Declarations.<\/li>\n<li>Prescribed Application and Processing Fee Payment Details.<\/li>\n<\/ul>\n<p>The exact documentation requirements may vary depending on the cable construction, manufacturing arrangement and proposed licence scope.<\/p>\n<h2>12. BIS Testing Charges for Thermocouple Compensating Cables<\/h2>\n<p>Testing charges depend on the applicable laboratory, product construction, cable varieties and testing scope.<\/p>\n<p>The BIS Laboratory Information Management System (LIMS) provides laboratory-wise testing facilities and charges for IS 8784:1987.<\/p>\n<p>For example, a BIS LIMS listing for Delhi Test House, Sonipat, displays a testing charge of \u20b921,750 excluding taxes for IS 8784:1987.<\/p>\n<p>This is a laboratory-specific listing and should not be treated as a fixed or universal BIS testing fee.<\/p>\n<h3>Major Testing Cost Components<\/h3>\n<ul>\n<li>Thermal EMF Test.<\/li>\n<li>Resistance Test.<\/li>\n<li>Insulation Thickness Test.<\/li>\n<li>Sheath Thickness Test.<\/li>\n<li>Insulation Resistance Test.<\/li>\n<li>Drain Wire Continuity Test.<\/li>\n<li>High Voltage Test.<\/li>\n<li>Heat Shock Test.<\/li>\n<li>Armour Wire Testing, where applicable.<\/li>\n<li>Dimensional Verification.<\/li>\n<li>Other applicable testing requirements.<\/li>\n<\/ul>\n<h3>Other BIS Certification Costs<\/h3>\n<p>The overall certification cost may include:<\/p>\n<table>\n<tbody>\n<tr>\n<th>Cost Component<\/th>\n<th>Description<\/th>\n<\/tr>\n<tr>\n<td>Application Fee<\/td>\n<td>Prescribed BIS application fee<\/td>\n<\/tr>\n<tr>\n<td>Factory Inspection<\/td>\n<td>Applicable inspection expenses<\/td>\n<\/tr>\n<tr>\n<td>Laboratory Testing<\/td>\n<td>Product testing charges<\/td>\n<\/tr>\n<tr>\n<td>Licence Fee<\/td>\n<td>Annual BIS licence fee<\/td>\n<\/tr>\n<tr>\n<td>Marking Fee<\/td>\n<td>Applicable minimum and unit marking fee<\/td>\n<\/tr>\n<tr>\n<td>Sample Transportation<\/td>\n<td>Sample packing and transportation expenses<\/td>\n<\/tr>\n<tr>\n<td>Laboratory Infrastructure<\/td>\n<td>Testing equipment and calibration expenses<\/td>\n<\/tr>\n<tr>\n<td>Consultancy Charges<\/td>\n<td>Professional certification support, if engaged<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The actual certification budget should be prepared after assessing the proposed product scope, testing requirements, laboratory availability and current BIS fee schedule.<\/p>\n<h2>13. Step-by-Step BIS Certification Process for Thermocouple Compensating Cables<\/h2>\n<p>The general process for obtaining BIS certification under Scheme-I is explained below.<\/p>\n<p><strong>Step 1 \u2013 Product Applicability Assessment<\/strong><\/p>\n<p>Confirm that the proposed product falls under the scope of thermocouple compensating cables covered by IS 8784:1987 and the Cables Quality Control Order, 2020.<\/p>\n<p><strong>Step 2 \u2013 Standard Review<\/strong><\/p>\n<p>Review the requirements of IS 8784:1987, including conductor, insulation, sheath, shielding, dimensions and electrical testing requirements.<\/p>\n<p><strong>Step 3 \u2013 Product Scope Assessment<\/strong><\/p>\n<p>Identify the thermocouple types, conductor materials, core arrangements, wire sizes, cross-sectional areas and cable constructions proposed for certification.<\/p>\n<p><strong>Step 4 \u2013 Factory Infrastructure Assessment<\/strong><\/p>\n<p>Review the manufacturing machinery, conductor processing facilities, insulation and sheathing facilities, shielding arrangements and laboratory infrastructure.<\/p>\n<p><strong>Step 5 \u2013 Documentation Preparation<\/strong><\/p>\n<p>Prepare company documents, manufacturing details, product specifications, drawings, quality manuals and testing procedures.<\/p>\n<p><strong>Step 6 \u2013 BIS Application Submission<\/strong><\/p>\n<p>Submit the application through the applicable BIS certification portal along with the required documents and prescribed fees.<\/p>\n<p><strong>Step 7 \u2013 Factory Inspection<\/strong><\/p>\n<p>BIS officials inspect the manufacturing premises, production processes, quality control arrangements and laboratory facilities.<\/p>\n<p><strong>Step 8 \u2013 Sample Drawal and Testing<\/strong><\/p>\n<p>Samples are selected according to BIS requirements and tested against the applicable provisions of IS 8784:1987.<\/p>\n<p><strong>Step 9 \u2013 Test Report Evaluation<\/strong><\/p>\n<p>The test results are evaluated to establish conformity with the requirements of the Indian Standard.<\/p>\n<p><strong>Step 10 \u2013 Compliance and Clarifications<\/strong><\/p>\n<p>The manufacturer addresses any observations, technical clarifications or non-conformities identified during inspection and testing.<\/p>\n<p><strong>Step 11 \u2013 Grant of BIS Licence<\/strong><\/p>\n<p>After satisfactory evaluation of the application, inspection and test results, BIS may grant the licence to use the ISI Standard Mark for the approved product scope.<\/p>\n<p><strong>Step 12 \u2013 Post-Licence Compliance<\/strong><\/p>\n<p>The manufacturer must implement the Scheme of Testing and Inspection, maintain production records, conduct routine testing and comply with BIS surveillance and licence renewal requirements.<\/p>\n<h2>14. Common Challenges in BIS Certification for Thermocouple Compensating Cables<\/h2>\n<p>Manufacturers may face several technical and documentation-related challenges during BIS certification.<\/p>\n<h3>1. Thermal EMF Test Failure<\/h3>\n<p>Inadequate conductor material selection or improper manufacturing controls may affect the thermal EMF characteristics of the cable.<\/p>\n<h3>2. Conductor Resistance Variation<\/h3>\n<p>Variations in conductor dimensions or material characteristics can affect electrical resistance.<\/p>\n<h3>3. Insulation Thickness Non-Conformity<\/h3>\n<p>Inconsistent insulation extrusion or improper process control may result in insulation thickness variations.<\/p>\n<h3>4. Sheath Thickness Failure<\/h3>\n<p>Improper extrusion conditions may lead to non-conformity in sheath thickness and overall cable dimensions.<\/p>\n<h3>5. Insulation Resistance Failure<\/h3>\n<p>Inadequate insulation quality or manufacturing defects may affect insulation resistance.<\/p>\n<h3>6. Drain Wire Continuity Issues<\/h3>\n<p>Improper drain wire installation or discontinuity may result in failure during continuity testing.<\/p>\n<h3>7. High Voltage Test Failure<\/h3>\n<p>Defects in insulation materials or cable construction may cause failure during high-voltage testing.<\/p>\n<h3>8. Heat Shock Test Failure<\/h3>\n<p>Inadequate thermal resistance of insulation or sheath materials may result in failure under specified heat shock conditions.<\/p>\n<h3>9. Inadequate Laboratory Infrastructure<\/h3>\n<p>Manufacturers may not have suitable thermal EMF testing arrangements, high-voltage testers, resistance measuring instruments or heat shock testing facilities.<\/p>\n<h3>10. Incomplete Technical Documentation<\/h3>\n<p>Incomplete cable drawings, material specifications, conductor details and product construction documents may create difficulties during BIS assessment.<\/p>\n<h3>11. Improper Control Unit Definition<\/h3>\n<p>Manufacturers must correctly identify control units based on cable size, type, raw material consignment and manufacturing conditions.<\/p>\n<p>A proper technical gap assessment before submitting the BIS application can help manufacturers avoid unnecessary testing delays and additional expenses.<\/p>\n<h2>15. How Qualitance India Can Help<\/h2>\n<p>Qualitance India provides professional BIS certification consultancy and regulatory compliance support to cable manufacturers and businesses seeking BIS certification in India.<\/p>\n<p>For thermocouple compensating cable certification under IS 8784:1987, our consultancy support includes:<\/p>\n<ul>\n<li>BIS certification applicability assessment.<\/li>\n<li>Review of IS 8784:1987 requirements.<\/li>\n<li>Product scope and variety assessment.<\/li>\n<li>Review of conductor material specifications.<\/li>\n<li>Review of cable construction and technical drawings.<\/li>\n<li>Manufacturing facility gap assessment.<\/li>\n<li>Laboratory infrastructure assessment.<\/li>\n<li>Preparation of Quality Control Manual.<\/li>\n<li>Preparation of Scheme of Testing and Inspection.<\/li>\n<li>Control unit and sampling procedure development.<\/li>\n<li>Guidance on testing equipment and calibration.<\/li>\n<li>Raw material inspection documentation.<\/li>\n<li>Laboratory testing coordination.<\/li>\n<li>BIS application documentation.<\/li>\n<li>Assistance during BIS factory inspection.<\/li>\n<li>Support in resolving testing non-conformities.<\/li>\n<li>Assistance with BIS licence grant and post-certification compliance.<\/li>\n<\/ul>\n<p>Our objective is to help manufacturers establish compliant manufacturing and quality control systems and manage the BIS certification process efficiently.<\/p>\n<p><strong>Qualitance India \u2013 Improving Quality &amp; Competence<\/strong><\/p>\n<p>Website: <a href=\"https:\/\/qualitanceindia.com\/\">https:\/\/qualitanceindia.com<\/a><br \/>\nEmail: <a href=\"mailto:info@qualitanceindia.com\">info@qualitanceindia.com<\/a><br \/>\nContact: +91 93106 15170<\/p>\n<h2>16. Frequently Asked Questions (FAQs)<\/h2>\n<p><strong>Q1. Is BIS certification mandatory for thermocouple compensating cables in India?<\/strong><\/p>\n<p>Yes. BIS certification is mandatory for thermocouple compensating cables covered under the Cables Quality Control Order, 2020.<\/p>\n<p><strong>Q2. Which Indian Standard applies to thermocouple compensating cables?<\/strong><\/p>\n<p>The applicable Indian Standard is IS 8784:1987 \u2013 Specification for Thermocouple Compensating Cables (Second Revision).<\/p>\n<p><strong>Q3. What is the applicable BIS certification scheme?<\/strong><\/p>\n<p>Thermocouple compensating cables are covered under Scheme-I (ISI Mark Scheme) of BIS.<\/p>\n<p><strong>Q4. When did BIS certification become mandatory for thermocouple compensating cables?<\/strong><\/p>\n<p>The Cables Quality Control Order, 2020, came into force on 1 August 2020.<\/p>\n<p><strong>Q5. What is the applicable Quality Control Order for thermocouple compensating cables?<\/strong><\/p>\n<p>The applicable Order is the Cables (Quality Control) Order, 2020, notified through S.O. 280(E), dated 21 January 2020.<\/p>\n<p><strong>Q6. What are the major tests required under IS 8784:1987?<\/strong><\/p>\n<p>The major tests include thermal EMF, resistance, insulation thickness, sheath thickness, insulation resistance, drain wire continuity, high voltage and heat shock tests.<\/p>\n<p><strong>Q7. What is the sample quantity required for BIS testing?<\/strong><\/p>\n<p>The factory Scheme of Testing and Inspection prescribes one sample for several routine tests, with different testing frequencies depending on the parameter. Initial certification sample requirements must be confirmed with BIS and the designated testing laboratory.<\/p>\n<p><strong>Q8. What is the control unit under IS 8784:1987?<\/strong><\/p>\n<p>Cable of each size and type manufactured under similar conditions from the same consignment of raw materials during a day constitutes one control unit.<\/p>\n<p><strong>Q9. Is an in-house laboratory required for BIS certification?<\/strong><\/p>\n<p>Yes. The Scheme of Testing and Inspection requires manufacturers to maintain a suitably equipped and staffed laboratory for conducting the applicable tests.<\/p>\n<p><strong>Q10. Is testing required for every finished cable length?<\/strong><\/p>\n<p>According to STI\/8784\/1, resistance, insulation resistance before the high-voltage test and drain wire continuity tests are conducted on each length of finished cable.<\/p>\n<p><strong>Q11. Is heat shock testing mandatory?<\/strong><\/p>\n<p>Heat shock testing is included in the Scheme of Testing and Inspection. It is carried out on cable of each size and type manufactured in a fortnight or 25 delivery lengths of the same size and type, whichever is less.<\/p>\n<p><strong>Q12. Is BIS certification applicable to armoured thermocouple compensating cables?<\/strong><\/p>\n<p>Where armouring is provided, the armour wires must comply with the applicable requirements of IS 3975, as referenced in the Scheme of Testing and Inspection.<\/p>\n<p><strong>Q13. Can foreign manufacturers obtain BIS certification for thermocouple compensating cables?<\/strong><\/p>\n<p>Yes. Eligible foreign manufacturers may apply under the BIS Foreign Manufacturers Certification Scheme (FMCS), subject to applicable requirements.<\/p>\n<p><strong>Q14. Are products meant for export exempt from the Cables Quality Control Order?<\/strong><\/p>\n<p>Yes. Goods or articles meant for export are excluded under the Cables Quality Control Order, 2020.<\/p>\n<p><strong>Q15. What information must be mentioned on cable reel or coil labels?<\/strong><\/p>\n<p>The label must contain the manufacturer&#8217;s name or trademark, thermocouple type, lead material, number of cores, number of wires and wire diameter, nominal conductor cross-sectional area, cable length, CM\/L number and date of manufacture or control unit number.<\/p>\n<p><strong>Q16. Can Qualitance India assist with BIS certification for thermocouple compensating cables?<\/strong><\/p>\n<p>Yes. Qualitance India provides consultancy support for product scope assessment, technical documentation, laboratory readiness, testing coordination, factory inspection preparation and BIS certification.<\/p>\n<div>\n<hr \/>\n<\/div>\n<h2>Conclusion<\/h2>\n<p>BIS certification for thermocouple compensating cables under IS 8784:1987 is an important regulatory requirement for manufacturers supplying covered products in the Indian market.<\/p>\n<p>The certification process requires careful attention to conductor materials, thermal EMF characteristics, insulation, sheath construction, shielding, dimensional requirements, electrical performance and production quality control.<\/p>\n<p>Manufacturers must also establish suitable laboratory facilities, implement the Scheme of Testing and Inspection and maintain complete production and testing records.<\/p>\n<p>Proper technical documentation, laboratory readiness and product testing can help manufacturers complete the BIS certification process efficiently.<\/p>\n<p>For professional assistance with <strong>BIS Certification for Thermocouple Compensating Cables<\/strong>, contact Qualitance India.<\/p>\n<p><strong>Qualitance India \u2013 Improving Quality &amp; Competence<\/strong><\/p>\n<p>Website: <a href=\"https:\/\/qualitanceindia.com\/\">https:\/\/qualitanceindia.com<\/a><br \/>\nEmail: <a href=\"mailto:info@qualitanceindia.com\">info@qualitanceindia.com<\/a><br \/>\nPhone: +91 93106 15170<\/p>\n","protected":false},"excerpt":{"rendered":"<p>BIS Certification for Thermocouple Compensating Cables \u2013 IS 8784:1987 Thermocouple compensating cables are widely used in industrial temperature measurement and process control applications. These cables connect thermocouples to temperature measuring instruments, controllers, transmitters and monitoring systems. They play an important role in maintaining the accuracy and reliability of temperature measurement signals, particularly in industries where [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4807,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"slim_seo":{"title":"BIS Certification for Thermocouple Compensating Cables \u2013 IS 8784:1987- Qualitance India - Qualitance India","description":"BIS Certification for Thermocouple Compensating Cables \u2013 IS 8784:1987 Thermocouple compensating cables are widely used in industrial temperature measurement and"},"_slim_seo_primary_term_category":46,"_slim_seo_primary_term_post_tag":0,"footnotes":""},"categories":[46,1,47],"tags":[],"class_list":["post-4806","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bis-certification","category-blog","category-manufacturers"],"_links":{"self":[{"href":"https:\/\/qualitanceindia.com\/wp-json\/wp\/v2\/posts\/4806","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/qualitanceindia.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qualitanceindia.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qualitanceindia.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/qualitanceindia.com\/wp-json\/wp\/v2\/comments?post=4806"}],"version-history":[{"count":1,"href":"https:\/\/qualitanceindia.com\/wp-json\/wp\/v2\/posts\/4806\/revisions"}],"predecessor-version":[{"id":4808,"href":"https:\/\/qualitanceindia.com\/wp-json\/wp\/v2\/posts\/4806\/revisions\/4808"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/qualitanceindia.com\/wp-json\/wp\/v2\/media\/4807"}],"wp:attachment":[{"href":"https:\/\/qualitanceindia.com\/wp-json\/wp\/v2\/media?parent=4806"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qualitanceindia.com\/wp-json\/wp\/v2\/categories?post=4806"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qualitanceindia.com\/wp-json\/wp\/v2\/tags?post=4806"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}