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Thermocouple-assembly type
1,Material:PtRh30-PtRh,PtRh10-Pt,NiCr-NiSi,NiCr-CuNi,Cu-CuNi
2.Use temperature:0-1600
3.Standard:IEC584,GB/T16839
4.ISO9001
Thermocouple-assembly type
1. BRIEF DESCRIPTION
Assembly type thermocouple which is used in industry as the sensor measuring temperature is generally connected with
displaymeter, recording meter and electronic regulator to directly measure temperature of liquid, vapor, gas and solid
surface ranging from 0 °C to 1800 °C during various production process. According to national regulation, the
thermocouples with all kinds of graduation produced by our company conform to IEC international standard. Products
executive standard : IEC 584, IEC1515 GB/T16839-1997
2. THERMOCOUPLE TYPE&MEASURING RANGE
When the temperature appears step change, the output of thermocouple changes to about 5% of this change. And the
time needed is called thermal response time, using T0.5 to express.
3.TECHNICAL FEATURES
Nominal pressure of thermocouple
Generally it refers to static outside pressure the protection tube can stand while not being broken in operation
temperature. In fact tolerant operation pressure is not only related to protection tube material, diameter and the
thickness of wall but also related to its structure, mounting method, insert length and the flow velocity and type of
measured medium.
Minimum insert length of thermocouple
It should be not less than 8 to 10 times of protectional tube outlet caliber (special products are exceptional).
Insulation resistance of thermocouple (normal temperature)
The testing voltage of insulation resistance at normal temperature is 500VΦ0V DC.
The atmosphere condition measuring insulation resistance at normal temperature
should be at temperature ranging from15-35°C , with 45% relative humidity and 86-
106 kPa atmospheric pressure.
a. For the thermocouple whose length exceeds one meter the multiple of its normal-temperature insulation resistance and its length should be not less than 100 Mohm.m. That is : Rr.L ≥ 100 Mohm.m L> 1m,In the formula: Rr - insulation resistance value of thermocouple at normal temperature, Mohm
L - the length of thermocouple, m
b. For the thermocouple whose length is no more than one meter, its insulation resistance value at normal temperature
should be not less than 100 Mohm. Insulation resistance at upper-limit temperature
Insulation resistance of thermocouple at upper-limit temperature should be not less
than the stipulation in the below sheet:
MODEL SELECTION SHEET