Fluke 725Ex FE 725ex Users Manual - Page 29

Using Measure Mode Measuring Electrical Parameters (Upper Display) To measure the current or voltage output of a transmitter, or to measure the output of a pressure instrument, use the upper display and proceed as follows: 1. Press l to select volts or current. LOOP should not be on. 2. Connect the leads as shown in Figure 7. Current Measurement with Loop Power The loop power function activates a 12-V supply in series with the current measuring circuit, allowing the user to test a transmitter when it is disconnected from plant wiring. To measure current with loop power, proceed as follows: 1. Connect the Calibrator to the transmitter current loop terminals as shown in Figure 8. 2. Press l while the Calibrator is in current measurement mode. LOOP appears and an internal 12-V loop supply turns on. Using Measure Mode 725Ex MULTIFUNCTION PROCESS CALIBRATOR V mA LOOP ZERO MEAS SOURCE STORE SETUP V mA TC RTD 2004.1573266 LR110460 Zone 0 AEx ia IIB 171 C I.S. Class I Div 1, Groups B,C,D RECALL Hz ˚C ˚F 100% 25% 25% 0% Red Black aly42f.eps Figure 7. Measuring Voltage and Current Output 19