ECP3600 self-contained portable pressure calibrator is best for field calibration of both instruments and their control loops, with capabilities of pressure and electric measurement, data storage, as well as facilities for 4 to 20 mA loop testing. It has a built-in pressure generator with fine pressure control. ECP4600 and ECP5600 calibrators have the same functions of ECP3600 except a built-in pump. They are rugged industrial design. The file storage function offers memory of up to 60 sets of instruments including information of tag numbers and calibration data. Features -Pressure transducer: high linear, long term stability and temperature compensated; -Microprocessor based, press to zero pressure, mA and voltage drift; -Built-in rechargeable 6V DC cells and charger for 220V AC 50Hz; -Engineering unit selected from MPa /mH2O /mHg /PSI, or kPa /mmH2O /mmHg /PSI; -Larger display: simultaneously indicate pressure, percentage and mA or voltage. Technical Specifications Pressure reading: refer to range table. Pressure generating by built-in pump: Selectable from -13 to 290 PSI (-90kPa to 2Mpa). Electric: Voltage: 0-200V, accuracy 0.05% FS. Current: 0-30mA, accuracy 0.05% FS. Output power for loop: Output Power: 24V DC +/-10%, max. current not exceeding 50mA.