Practical Instrument Electronics 830 - Manual (Page 20)

Page 18
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 830
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
830 with LOOPSCOPE 830 Simulating a
Transmitter