Loading Port:Shanghai
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Compensating conductor, compensating cable
The products are applicable for the electric connection between various thermocouples and temperature-indicating instrument with index of S,K,E,T,J and N to improve the thermometric precision.Usually,the PVC insulated and sheathed compensating cable is applied since it's good for its dampproof ante-corrosion and flame-retardant performance.The heat-resistant fluoroplastic insulation and sheath has high temperature-resistant,alkali-resistant acid-resistant,oil-resistant, wear-resistant,age resistant,waterproof and flame-retardant performance.The silicon rubber insulated compensation conductor and compensating cable have oil-resistant,anti-corrosion,age resistant,waterproof and flexible features.The compensating cable is composed of certain quantities of twisted pair type compensating.
Executive Standard:
Apply GB/T4989-94 and JB/T7495-94. Which is equivalent to IEC584-3 (1989)
Operational Performances:
1.Working temperature:
General: max. 135°C~ -20°C
Heat resistant: max. 275°C~ -60°C
Fire resistant: max. 550°C~ -60°C
2. Minimum bending radius:
A. PVC insulated and sheathed
parallel type: not less than 6 times of the thickness of the compensating conductor; twisted pair type: not less than 6 times of the outer diameter of the compensating conductor
B. Fluoroplastic insulated and sheathed
parallel type: not less than 10 times of the thickness of the compensating conductor; twisted pair type: not less than 10 times of the outer diameter of the outer diameter of the compensating conductor.
C. Silicon rubber insulated and sheathed
parallel type: not less than 4 times of the thickness of the compensating conductor; twisted pair type;not less than 4 times if the outer diameter of the compensating conductor.
D. For no armored layer compensating cable, not less than 6 times of the outer diameter of the cable. For armor-layered compensating cable, not less than 12 times of the diameter of the cable. For fluoroplastic sheathed and insulated compensating cable, shall not be less than 8 times of the outer diameter of the cable.
Main Technical Data
1.Type, alloy materials and insulation colors
Type of Compensating Conductor | Equipped Thermocouple | Thermocouple Index | Compensating Conductor Alloy -wire | Insulation Layer Coloration | ||
Positive | Negative | Positive | Negative | |||
SC | PtRh10-Platinum thermocouple10 | S | SPC Cu | SNC Cu Ni | Red | Green |
RC | PtRh13-Platinum thermocouple13 | R | RPC Cu | RNC Cu Ni | Red | Green |
KCA KCB KX | Ni Cr- Nisi-loy Thermocouple | K | KPCA Fe KPCB Cu KPX Ni Cr | KNCA Cu Ni KNCB Cu Ni KNX Ni Si | Red | Blue Blue Black |
NC NX | Ni Cr- Nisi-loy Thermocouple | N | NPC Fe NPX Ni Cr Si | NNC Cu Ni NNX Ni Si | Red | Grey Grey |
EX | Ni Cr- Copper-nickel Thermocouple | E | EPX Ni Cr | ENX Cu Ni | Red | Brown |
JX | Fe- Copper-nickel Thermocouple | J | JPX Fe | JNX Cu Ni | Red | Purple |
TX | Cu- Copper-nickel Thermocouple | T | TPX Cu | TNX Cu Ni | Red | White |
Note: The letter of type is corresponding to the index of thereto couple, the letter "C" in the second letters represents compensated type compensating conductor, the letter "X" represents prolonged type compensating conductor. The SC type compensating conductor can adapt thereto couple with R type index.
2.Category and grade-mark of compensating conductor
Category | Accuracy Grade and Marking | Sheath Coloration | |||
General | Precision | General | Precision | ||
General | G | B | A | Black | Grey |
Heat-resistant | H | B | A | Black | Yellow |
3.Thermoelectric potential and allowance
Type | 135°C | 280°C | ||||
(mV) Thermoelectric | (mV) Allowance | (mV) Thermoelectric | (mV) Allowance | |||
General | Precision | General | Precision | |||
SC | 0.645 | ±0.0379(5°C) | ±0.023(3°C) | 1.440 | ±0.0379(5°C) | ±0.023(3°C) |
BC | 0.333 | - | - | 0.178 | - | - |
KC | 4.095 | ±0.105(2.5°C) | ±0.763(1.5°C) | 6.137 | ±0.201(5°C) | - |
KX | 4.095 | ±0.104(2.5°C) | ±0.065(1.3°C) | 8.137 | ±0.100(2.5°C) | ±0.060(1.0°C) |
EX | 6.317 | ±0.570(2.5°C) | ±0.102(1.5°C) | 13.419 | ±0.183(2.5°C) | ±0.111(1.5°C) |
JX | 5.268 | ±0.134(2.5°C) | ±0.081(1.5°C) | 10.777 | ±0.138(2.5°C) | ±0.083(1.5°C) |
TX | 4.277 | ±0.047(1.0°C) | ±0.024(0.5°C) | 9.286 | ±0.053(1.0°C) | ±0.043(0.5°C) |
4.The intrinsically safe compensation wire has the following data in addition to the above data
Item | Unit | Data |
Working capacity | PF/m | ≤80 |
Unbalanced capacity | PF/m | ≤1 |
Distributed inductance | µH/m | ≤0.6 |
Electrostatic induction (electrostatic voltage 20kV) | V | ≤1 |
Electromagnetic interference reduction (interfered magnetic field 400A/m) | mV | ≤5 |
5.Other performance data
Item | Unit | Technical Data | |
PVC insulation | F46 insulation | ||
Insulation resistance (20°C)≥ | M .km | 25 | 500 |
Test voltage | V/min | 1000 | |
Flame-retardant character | |||
Example 1: Compensated type and precision grade compensating cable for connection with index K thermocouple: max. application temperature is 200°C,Fluoroplastic insulation flame-retardant temperature is 135°C,PVC sheath is of twisted pair type, aluminum/plastic compound separate shield and copper tape general shield. 7 compensating conductor pairs, conductor nominal section is 1.5mm2, multiple-strand alloy-wire stranding, expressed as: ZR135-KC-HS-FP3VP2 7 X 2 X 1.5
Example 2: Prolonged type and precision grade compensating conductor for connection with index E thermocouple:max. application temperature is 275 0C ,fluoroplastic insulation and sheath, tin-plated copper wire shield, single-strand conductor, section is 2.5mm=, expressed as:
EX-HS-FF46P1 2 X 2.5
