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Power Station Thermocouple / Thermal Resistance
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描述
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1.Application
Professionally designed for power stations, it can meet the temperature measurement needs of 300,000 and 600,000 kilowatt generating units and auxiliary equipment. Directly measure the temperature of liquid, vapor and gaseous media and solid surface in the range of -200 ° C ~ 800 ° C in various production processes.
2.Working principle
The electrode of a thermocouple consists of two different conductor materials. When there is a temperature difference between the measuring terminal and the reference terminal, a thermoelectric potential will be generated, and the working instrument will display the temperature value corresponding to the thermoelectric potential. Thermal resistance measures the temperature of a substance by changing its resistance as the temperature changes. When the resistance value changes, the working instrument displays the temperature value corresponding to the resistance value.
3.Main technical parameters
Product performance standards:
IEC584 IEC751 IEC1515 JB / T18622-1997 JB / T8623-1997 GB / T16839-1997
4.Measurement range and tolerance
| Type | Scale number | Tolerance level | |||
| I | II | ||||
| Tolerance value | Temperature measurement range °C | Tolerance value | 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 | ||
5. Room temperature insulation resistance
Thermal resistance at ambient temperature is 15-35℃, relative humidity is not more than 80%, test voltage is 10-100V (DC) insulation resistance between electrode and outer tube> 100MΩ.
Thermocouple at ambient temperature of 20 ± 15℃, relative humidity not more than 80%, test voltage is 500 ± 50V (DC), insulation resistance between electrode and outer tube> 1000Ω.m
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Anhui Hongye Instrumentation Cable Co., Ltd.
Address: 866 Tiankang Avenue, Tianchang Economic Development Zone, Anhui Province
Phone：0550-7043587
Fax：0550-7043567
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