Professional for the petroleum chemical industry design, direct measurement of 200million DEG C 1600 temperature range of liquid, steam and gas medium and solid surface temperature measurement.

Working principle

The electrodes of the thermocouple are made of two different materials. When there is temperature difference between the measuring end and the reference end, it will generate the thermal potential, and the working meter will show the corresponding temperature value of the thermal potential.

The thermal resistance is the relationship between the resistance and temperature. When the temperature changes in the medium, the resistance value is changed with the change of the working meter will show the corresponding temperature value of the resistance value.

Main technical parameters

Product implementation standard

IEC1515

IEC584

IEC751

JB/T551891

JB/T558291

Nominal pressure

Generally refers to the temperature, the protection of the tube can withstand the static external pressure without rupture. Allowable working pressure is not only related to the protection of pipe material, diameter, wall thickness, but also its structure, installation method and the flow rate and type of the measured medium.

Measurement range and tolerance

Thermocouple

型 号 分度号 允  差  等  级 Ⅰ Ⅱ 允 差 值 测温范围℃ 允差值 测温范围℃ WRN K ±1．5℃ -40-+375 ±2．5℃ -40-+333 ±0．004 ltl 375-1000 ±0．0075 ltl 333-1200 WRE E ±1．5℃ -40-+375 ±2．5℃ -40-+333 ±0．004 ltl 375-800 ±0．0075 ltl 333-900 WRP S ±1℃ 0-1100 ±2．5℃ 0-600 ±「1+0．003(t-1100)」 1100-1600 ±0．0025 ltl 600-1600 WRQ R ±1℃ 0-1100 ±2．5℃ 0-1100 ±「1+0．003(t-1100)」 1100-1600 ±0．0025 ltl 1100-1600 WRR B — — — — — — ±0．0025 ltl 600-1700

Thermal resistance

型号 分度号 测温范围℃ 精度等级 允许偏差 WZP Pt100 -200-+500  A ±(0．15+0．002)ltl B ±(0．30+0．005)ltl WZC Cu50  Cu100 -50-+100 ---- ±(0．30+0．005)ltl