PRC15-NIST / Extech Current & Voltage Calibrator, 0 to 24mA, includes Traceable Certificate 0 to 24mA (-25 to 125%) readout.0 to 20V DC calibration source.

PRC20 Extech Thermocouple Calibrator อุปกรณ์สอบเทียบใช้งานง่ายสะดวกพร้อมคู่มือและอุปกรณ์การใช้งาน แบบพกพา

PRC20-NIST / Extech Microprocessor Calibrator/Thermometer, includes Traceable Certificate Source and measure 8 thermocouple type devices (J, K, T, E, C, R, S and N).

PRC30-NIST / Extech Multifunction Process Calibrator and Meter with NIST 0 to 24mA (-25 to 125%) readout.24V DC power source for 2-wire current loop.