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Practical Instrument Electronics
Tel: 585.872.9350 • Fax: 585.872.2638 • [email protected] • www.piecal.com
Operating Instructions
2 Wire SIM mA, 2 Wire SIM % (Percent of 4 to 20 mA)
Choose this function to simulate a 2 Wire Transmitter output from 0.000 to
24.000 milliamps. Operates in loops with power supply voltages from 2 to 60
VDC.
Move the power switch
w
to SOURCE then Double Click the EZ-DIAL knob to
get into the Menu. Turn the knob to scroll through the settings and press the knob
to make your selection. Select mA for the FUNCTION and 2W SIM for the
MODE. Choose either mA or % and whether you need the 250
Ω
HART resistor
active in the loop.
If you would also like to see the condition of the loop turn the
e
DIAL KNOB to
move to the second (or third) menu page so the word
mA DIAGNOSTIC
appears at the top of the menu.
LOOPSCOPE turns on the Loop Diagnostic display which simultaneously
indicates the current, voltage and resistance of the loop. When enabled the
LOOPSCOPE also indicates errors by flashing the LED and writing diagnostic
messages on the display. Messages include
LOW LOOP VOLT, HIGH LOOP
VOLT and HIGH LOOP IMPED. With LOOPSCOPE on the 830PM occasionally
performs a test on the loop. During this short test the loop mA signal will be
affected.
mA DIAGNOSTIC
> EXIT
LOOPSCOPE OFF
ON
2-WIRE
SUPPLY
25.4 V
LOAD
485 Ω
12.000
mA
2-WIRE
12.000
mA
830PM with LOOPSCOPE
830PM Simulating a Transmitter