Fabricated Thermocouple

◆ Summary
     Pors-TC series thermocouple are generally assembled by temperature sensing element, protective sheath, installtion fixtures and terminal box, matching with indicator, recorder, PC, and generally used to measure temperature of liquid, steam, gas and solid’s surface within range of 0℃ ~ 1300℃ in producing process.

◆ Working Principle
     Electrodes of the sensor are made of two thermal conductors with different material, when there is temperature differece between the measuring junction and the reference junction, thermoelectric potential will arise, the connected instrument will show the temperature value in correspondance to the thermoelectric potential.

◆ Features
     Simple assembly, convenient change;
     Press spring fixed temperature sensing element, good vibration-proof performance;
     Wide measuring range; 
     high mechanical strength, good pressure-proof capacity;

◆ Standard: The sensors are made complying with standard: IEC60584, JB/T9238-1999

◆ Measuring range and Tolerance

Variety

Model

Type

I class

II class

Tolerance

Measuring range ℃

Tolerance

Measuring range ℃

NiCr-Nisi

TCK

K

±1.5℃

-40~+375

±2.5℃

-40~+333

±0.004ltl

375~1000

±0.0075ltl

333~1200

NiCrSi-NiSi

TCN

N

±1.5℃

-40~+375

±2.5℃

-40~+333

±0.004ltl

375~1000

0.0075ltl

333~1200

NiCr-CuNi

TCE

E

±1.5℃

-40~+375

±2.5℃

-40~+333

±0.004ltl

375~800

±0.0075ltl

333~900

Fe-CuNi

TCJ

J

±1.5℃

-40~+375

±2.5℃

-40~+333

±0.004ltl

375~750

±0.0075ltl

333~750

Cu-CuNi

TCT

T

±0.5℃

-40~+125

±1.0℃

-40~+133

±0.004ltl

125~350

±0.0075ltl

133~350

Note: t is temperature of the measured medium;

◆ Insulation resistance  (Normal temperature)
     In temperature of 20±15℃, related humidity is not more than 80%, tested voltage is 500±50V (DC), insulation resistance between electrode and external shetath is more than or equal to 1000MΩ.

◆ Connection mode
 
                Single element                                   Double element

◆ Terminal box mode

◆ Pictures