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Thermocouple wire in compensation and compensation cable is applicable to electric power, metallurgy, petroleum, chemical industry, textile industry and national defense, scientific research departments such as automatic temperature measuring meter of single point or multipoint connection.
Product standards:
Thermal thermocouple compensation wire, GB/T4989-94
Using features:
Temperature: heat resistant level: - 65 ℃ ~ + 200 ℃ and 65 ℃ ~ + 260 ℃ two;
Regular grade: - 40 ℃ ~ + 70 ℃ and 40 ℃ ~ + 105 ℃ two;
Minimum bending radius: compensation conductor: no less than eight times conductor diameter;
When compensation cable: there are armoured not less than 12 times the cable diameter, no armoured when not less than 6 times the cable diameter
The main technical indicators:
Model, wire materials and insulation color
model | thermocouple | With thermocouple | Compensating lead wire | Insulating layer coloring | ||
The anode | The cathode | The anode | The cathode | |||
BC | B | Platinum rhodium 30 - platinum rhodium 6 | copper | copper | grey | |
SC | S | Platinum rhodium 10 - platinum | SPC (copper) | SNC (0.6) copper and nickel | red | green |
RC | R | 13 - platinum rhodium platinum | RPC (copper) | The RNC (0.6) copper and nickel | red | green |
KCA | K | Nickel chrome - nickel silicon | KPCA (iron) | KNCA (2) copper nickel | red | LAN |
KCB | Kleiner perkins caufield & byers (copper) | KNCB (4) copper nickel | red | LAN | ||
KX | KPX (nickel chrome 10) | KNX (nickel silicon 3) | red | black | ||
NC | N | Nickel chromium silicon - nickel silicon | NPC (iron) | NNC (18) copper and nickel | red | grey |
NX | NPX (nickel chrome 14 silicon) | NNX (nickel silicon 4) | red | grey | ||
EX | E | Nickel silicon - nickel silicon | EPX (nickel chrome 10) | ENX (45) copper and nickel | red | brown |
JX | J | Iron, copper and nickel | JPX (iron) | JNX (45) copper and nickel | red | The purple |
TX | T | Copper and copper and nickel | TPX (copper) | TNX (45) copper and nickel | red | white |
WC3/25 | WRe3-WRe25 | Tungsten - tungsten rhenium 25 | WPC3/25 | WNC3/25 | red | huang |
WC5/26 | WRe5-WRe26 | Tungsten-rhenium 5 - tungsten rhenium 26 | WPC5/26 | WNC5/26 | red | orange |
Use color classification and sheath
Using the classification | Precision grade and symbol | Sheath coloration | |||
Regular grade | Precision level | Regular grade | Precision level | ||
In general use | G | / | S | black | gray |
Heat with | H | / | S | black | yellow |
Reciprocating tolerance and resistance
Compensation conductor model | At 20 ℃ reciprocating Ω/m not greater than resistance | ||||
0.2mm2 | 0.5mm2 | 1.0mm2 | 1.5mm2 | 2.5mm2 | |
NC or BC | 0.25 | 0.10 | 0.05 | 0.03 | 0.02 |
KCA | 3.50 | 1.40 | 0.70 | 0.47 | 0.28 |
KCB | 2.60 | 1.40 | 0.70 | 0.47 | 0.28 |
KX | 5.50 | 2.20 | 1.10 | 0.73 | 0.44 |
EX | 6.25 | 2.50 | 1.10 | 0.73 | 0.44 |
JX | 6.25 | 2.50 | 1.25 | 0.83 | 0.50 |
TX | 3.25 | 1.30 | 0.65 | 0.43 | 0.26 |
NC | 3.75 | 1.50 | 0.75 | 0.50 | 0.30 |
N | 7.15 | 2.86 | 1.43 | 0.95 | 0.57 |
WC3/25 | 0.50 | 0.20 | 0.10 | 0.07 | 0.04 |
WC5/26 | 0.50 | 0.20 | 0.10 | 0.07 | 0.04 |
Insulation resistance (20 ℃) : PVC insulation is not less than 25 m Ω. Km;FEP or PEA insulation is not less than 100 m Ω. Km.
Flame retardant properties: by class A (according to test GB12666.5-90)
Specifications:
Structure, cross section was | 0.2 | 0.5 | 1.0 | 1.5 | 2.5 | Wire core logarithm |
Single strand wire core mm | 1/0.52 | 1/0.80 | 1/1.13 | 1/1.37 | 1/1.76 | Wire 1 to 37 for cable 2 - |
