Compensating cable Compensating Conductor

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Product Description:

Compensating conductor, compensating cable

Product Description

  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  




FAQ

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





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