1, the application

Professional for power station design, can satisfy 300000, 600000 kw generators and auxiliary engine temperature measurement needs. Direct measurement of all kinds of production process - 200 ° C to 800 ° C range of liquid, steam and gas medium, as well as solid surface temperature.

2, work principle,

The thermocouple electrode is composed of two different conductor material. When measuring the temperature difference is with the reference, the can produce thermoelectric power, the instrument Then show the thermoelectric potential have corresponding temperature value. Thermal resistance is the use of the material when the temperature changes, its resistance also along with the change of characteristics to measure temperature. When resistance changes, the work shows the temperature resistance of the meter.

3, the main technical parameters

Product standards:

IEC584

IEC751

IEC1515

JB/T18622-1997

JB/T8623-1997

GB/T16839-1997

4, measurement range and tolerance

Model number indexing tolerance grade

I II

Tolerance values ° C temperature range tolerance value ° C temperature range

WRN K + / - 1.5 ° C - 40 ~ + 375 + / - 2.5 ° C - 40 ~ + 333

LTL 375 ~ 1000 + / - 0.0075 0.004 mm LTL 333 ~ 1200

WRM N + / - 1.5 ° C - 40 ~ + 375 + / - 2.5 ° C - 40 ~ + 333

LTL 375 ~ 1000 + / - 0.0075 0.004 mm LTL 333 ~ 1200

WRE E + / - 1.5 ° C - 40 ~ + 375 + / - 1.5 ° C - 40 ~ + 333

LTL 375 ~ 800 + / - 0.004 0.004 mm LTL 333 ~ 900

WRF J + / - 1.5 ° C - 40 ~ + 375 + / - 1.5 ° C - 40 ~ + 333

LTL 375 ~ 750 + / - 0.004 0.004 mm LTL 333 ~ 750

WRC T + / - 1.5 ° C - 40 ~ + 125 + 1 ° C - 40 ~ + 133

LTL 125 ~ 350 + / - 0.0075 0.004 mm LTL 133 ~ 350

5, room temperature insulation resistance

Thermal resistance at ambient temperature for 15-35 ° C, relative humidity is not more than 80%, test voltage for 10-100 - v (dc) electrode and outer casing of the insulation resistance between > 100 m Ω.

Thermocouple in the environmental temperature is 20 + 15 ° C, relative humidity is not more than 80%, test voltage for 500 + 50 v (dc) electrode and > 1000 Ω insulation resistance between the outer casing. M