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Power station thermal resistance for professional 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.
The working principle of power plant thermal resistance
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.
The technical parameters of power plant thermal resistance
Product standards:
IEC584
IEC751
IEC1515
JB/T18622-1997
JB/T8623-1997
GB/T16839-1997
Power plant thermal resistance measurement range and tolerance
Type no. | Degree, | Tolerance level | |||
I | II | ||||
Tolerance values | Temperature measurement range ° c. | Tolerance values | Temperature measurement range ° c. | ||
WRN | K | ±1.5°C | - 40 ~ + 375 | ±2.5 °C | - 40 ~ + 333 |
±0.004ltl | 375 ~ 1000 | ±0.0075 ltl | 333 ~ 1200 | ||
WRM | N | ±1.5°C | - 40 ~ + 375 | ±2.5°C | - 40 ~ + 333 |
±0.004 ltl | 375 ~ 1000 | ±0.0075 ltl | 333 ~ 1200 | ||
WRE | E | ±1.5°C | - 40 ~ + 375 | ±1.5°C | - 40 ~ + 333 |
±0.004 ltl | 375 ~ 800 | ±0.004 ltl | 333 ~ 900 | ||
WRF | J | ±1.5°C | - 40 ~ + 375 | ±1.5°C | - 40 ~ + 333 |
±0.004 ltl | 375 ~ 750 | ±0.004 ltl | 333 ~ 750 | ||
WRC | T | ±1.5°C | - 40 ~ + 125 | ±1°C | - 40 ~ + 133 |
±0.004 ltl | 125 ~ 350 | ±0.0075 ltl | 133 ~ 350 | ||
Power plant heat resistance 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
