Product Description 

 BWJK mine coal temperature sensor Temperature sensor calibration verification device for periodic testing and inspection and calibration. The supporting device can be widely used as a temperature sensor of the coal industry standard device detection testing and calibration measurement can order five temperature sensors. All levels of coal mine safety testing and inspection agency, the Bureau of Mines, the regional coal mine safety equipment metering station measurement institutions at all levels to carry out mine the best work of inspection and testing and calibration of the temperature sensor measuring standard device. Also a temperature sensor manufacturers preferred delivery inspection standard device. 
 BWJK mine temperature sensor calibration verification device instrument characteristics 
 Wide temperature range (-20 ~ 100) ℃, suitable for all types of temperature sensors for use in mines. Precision thermostatic bath as a stable source of temperature, temperature fluctuations of ± 0.05 ℃. 
 Precision thermostatic bath temperature sensor measurement source using air-cooled completely closed refrigeration compressor, cooling speed, and low noise. Temperature trough control system using PID automatic control, LED digital display, stainless steel liner, the platen. 
 The sensor display value and the corresponding output signal value (frequency or current) synchronous detection. 5 channel temperature measurement values ??can be displayed simultaneously. 
 Different output signal (frequency or current) can easily select the conversion. 
 The sensor can not otherwise connected load resistance and outside the parameters of the series with the load resistance 500Ω detection sensor. 
 Regulation, steady flow sensor supply stable DC power supply, the output voltage can be adjusted within the range of 0 ~ 30V, the upper limit of the output current can be set anywhere in the range of 0 ~ 2A. 
 Integrated structure, beautiful appearance, durable, easy to operate and convenient. 
 BWJK mine temperature sensor calibration verification device parameters 
 Measure the temperature of the source temperature: (-20 to 100) ℃ volatility ≤ 0.02 ~ 0.05 degrees accuracy of ± 0.2% FS 
 Frequency meter :0-9999Hz, accuracy: 1Hz, stability: ≤ 10-6 
 Analog line load: 2km, accuracy 0.5 
 Output power: high-precision DC power supply DC0 ~ 30V (continuously adjustable), 5A; stability ≤ 1% accuracy of 0.5 
 Current measurement: 0 ~ 200mA 0.1 Ji 
 Test medium supporting insulation Cup: access to 5 degrees 
 Preheat the detection large ones: 5-way 
 Host Dimension: Approx. (L * W * H) 450 * 400 * 400 (MM) 
 Device power supply: AC220V ± 10% 50Hz 
 Manufacturers before they leave the factory, according to the demand with fixtures, convenient the customers different manufacturers sensor calibration and verification (not included)