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E-mail
9066726@qq.com
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Phone
13855058800
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Address
No. 20 Renhe South Road, Tianchang City, Anhui Province
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Anhui Tiankang (Group) Co., Ltd
Thermal resistance of power plant
NegotiableUpdate on 01/11
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Overview
The thermal resistance of power plants is designed for power plants and can meet the temperature measurement needs of 300000, 600000 kW and other generator sets and auxiliary equipment. Directly measure -200 in various production processes; C~800° The temperature of liquid, vapor, gas media, and solid surfaces within the range of C.
Product Details
The thermal resistance of power plants is designed for power plants and can meet the temperature measurement needs of 300000, 600000 kW and other generator sets and auxiliary equipment. Directly measure the temperature of liquid, vapor, gas media, and solid surfaces within the range of -200 ° C to 800 ° C in various production processes. Selection; The company can also customize various special models of thermocouples, thermistors, bimetallic thermometers, and flange sleeves according to samples or drawings.
working principle
The electrodes of a thermocouple are composed of two different conductor materials. When there is a temperature difference between the measuring end and the reference end, a thermoelectric potential is generated, and the working instrument displays the temperature value corresponding to the thermoelectric potential.
Thermistor measures temperature by utilizing the characteristic that the resistance of a substance changes with temperature. When the resistance value changes, the working instrument displays the temperature value corresponding to the resistance value.
Execution standard for thermal resistance in power plants and power stations
IEC584； IEC751； IEC1515； JB/T18622-1997； JB/T8623-1997； GB/T16839-1997。
Measurement range and tolerance
working principle
The electrodes of a thermocouple are composed of two different conductor materials. When there is a temperature difference between the measuring end and the reference end, a thermoelectric potential is generated, and the working instrument displays the temperature value corresponding to the thermoelectric potential.
Thermistor measures temperature by utilizing the characteristic that the resistance of a substance changes with temperature. When the resistance value changes, the working instrument displays the temperature value corresponding to the resistance value.
Execution standard for thermal resistance in power plants and power stations
IEC584； IEC751； IEC1515； JB/T18622-1997； JB/T8623-1997； GB/T16839-1997。
Measurement range and tolerance
| Model number | Dividing 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 liters | 333~1200 | ||
| WRM | N | ±1.5°C | -40~+375 | ±2.5°C | -40~+333 |
| ±0.004 liters | 375~1000 | ±0.0075 liters | 333~1200 | ||
| WRE | E | ±1.5°C | -40~+375 | ±1.5°C | -40~+333 |
| ±0.004 liters | 375~800 | ±0.004 liters | 333~900 | ||
| WRF | J | ±1.5°C | -40~+375 | ±1.5°C | -40~+333 |
| ±0.004 liters | 375~750 | ±0.004 liters | 333~750 | ||
| WRC | T | ±1.5°C | -40~+125 | ±1°C | -40~+133 |
| ±0.004 liters | 125~350 | ±0.0075 liters | 133~350 | ||
Room temperature insulation resistance
The thermal resistance is tested at an ambient temperature of 15-35 ° C, relative humidity not exceeding 80%, and a test voltage of 10-100V (DC). The insulation resistance between the electrode and the outer sleeve is greater than 100M Ω.
The insulation resistance between the electrode and the outer sheath of the thermocouple is greater than 1000 Ω. m when the ambient temperature is 20 ± 15 ° C, the relative humidity is not greater than 80%, and the test voltage is 500 ± 50V (DC).
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