YHS-787 process calibrator 
 YHS-787 process calibrator 
 YHS-787 process calibrator as essential toolbox for each instrument maintenance engineer calibration tool, YHS-787 (ProcessMeterTM) process to a digital multimeter DMM and loop calibrator combines a robust and reliable hand-held tools , the price equivalent to only a single loop calibrator. YHS-787 digital multimeter DMM process based on an increase of measurement, the DC loop current output and analog functionality, accuracy up to 0.05%, resolution of 1 μA. Whole circuit design from the large-scale ASIC chips. 16-bit microprocessor with an internal, high precision and high stability operational amplifiers and analog digital converters. Low power consumption, showing high accuracy (53000 counts or 53 / 4), automatic range, can reduce the operation and improve safety. Its technical performance in line with power II, Electric Type Ⅲ standard automatic instrument calibration, the working environment in line with GB6587.1-86 "environment for electronic measuring instruments Test Master" in the II group of the relevant provisions of the instrument. 
 YHS-787 process calibrator features 
 1, a choice of measurement instrument Min / Max / Average / Hold / Relative measurement mode 
 2, while in the current measurement for the transmitter to provide +24 V loop power supply 
 3, the instrument can output current to the transmitter and other equipment, can also simulate a transmitter output current 
 4, four selectable ramp rate step, in the case of a free hand to test the response speed of the transmitter 
 5, the current output range of choice of four, corresponding to 0.05% accuracy, resolution 1μA, and also shows the percentage range 
 6, testing and calibration for the thermocouple measurement and dedicated mV mV output 
 7, backlight LCD display, maximum 53,000 words, suitable for use in any lighting condition 
 8, Built-in rechargeable NiMH battery pack, plenty of power, the external can be replaced. 
 YHS-787 process calibrator features 
 1. Output signal number keys, the operation exactly convenient. 
 2. Instrument to measure AC and DC voltage, resistance, frequency, mV, AC and DC current, diodes and other functions. 
 3. Can output source current to the transmitter and other equipment, you can simulate a two-wire transmitter output current. 
 4. Stepping out of four ramp rates, to test the transmitter's response time. 
 5. There are four current output range of 4 ~ 20mA, 0 ~ 20mA, 0 ~ 24mA, 0 ~ 10mA. 0.05% accuracy, resolution 1uA, also shows the percentage. 
 6. Millivolt output of 0 ~ 99.999mV, resolution 5uV, accuracy of 0.05%. Voltage output 0 ~ 10.000V, resolution of 1mV, 0.05% accuracy. 
 7. Instrument to provide 24Vdc loop power for the transmitter, and can measure the current. 
 8. Display table T and socket connection diagram to prevent misuse, comes with backlight.