Ametek Jofra ASC-400, Справочное руководство, Страница: 41 / 69

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7.2 Measuring current with internal loop power
To test/calibrate a 2-wire, loop powered transmitter, as stand alone, use the loop power
function. This function activates a 24V supply in series with the current measuring
circuit. To use this option, follow the principle of navigating through the functions
described in the guidelines in section 4.2 and proceed as follows:
1. Select “Current” from the Upper Mode list.
2. Select “24V On” from the 24V Power list.
3. Connect the ASC-400 calibrator to transmitter current loop terminals, as shown in
Figure 14.
Figure 14
Connection using build in
loop supply in ASC-400