Loop calibrator PROVA-135

temperaturefrequencyfor electrical measuring instruments

Source 4~20mA, 0~24mA with 1μA resolution (1KΩ load, 24V loop supply), basic accuracy 0.025%. Source 0~24.000V with 1mV resolution. Source frequency 1~20000Hz square wave with programmable duty cycle (1~99%). Auto step and auto ramp for sourcing mA, V. Easy fixed 25% up and down, or programmable percentage (1~99%) increase and decrease (mA, V). Measure DC mA with loop power (24V output). Measure DC V. Measure Temperature (°C, °F) of 11 types of thermocouples (K, J, E, T, R, S, N, L, U, B and C). Calibrator grade precision temperature measurement with 0.1*C & 0.1*F resolution. Detection of thermocouples disconnection. Source and Measure at the same time. Warning for overload, output open (mA) or short (V). Short circuit protection for output. Battery power indication (%) when turn on the calibrator. Applications: Calibration of 4~20mA panel meters. LED brightness testing (0~24mA). Temperature calibration of panel meters or instruments for 11 types of thermocouples.