Emerson Rosemount 3100 Series - Loop Test (the 3102;3105)

Reference Manual
00809-0100-4840, Rev. BA
July 2008
Rosemount 3100 Series
5-4
5. Press the green button ↓ to get to the next diagnostic data, “F”.
This is the frequency at which the transmitter is operating, and should
read between 49 and 58 kHz.
6. Press the green button
↓ to get to the next diagnostic data, “t”.
This is the temperature being recorded by the integral temperature sensor
(or remote temperature sensor, if fitted) and is being used by the
transmitter to calculate the distance-to-target.
7. Press the green button
↓ and then the blue button → to change to the
PV display.
Loop Test
(The 3102/3105)
Screen display: tESt
The transmitter can cycle through the programmed operating range without
any change in the liquid level, causing the current output to cycle through a
normal operation (and energize/de-energize relays on The Rosemount 3102).
The transmitter can be programmed to fix the loop current at any value
between 4 and 20 mA to allow testing of any other loop or control instruments.
To enter the loop test menu from the PV display, press the blue button
→ to
display “diAg” and then press-and-hold the blue button
→ for at two seconds
to display “tESt”.
NOTE:
See Figure C-3 on page C-4 for a map of the diagnostics menu structure.
Cycle Function
Screen display: CyCLE
a) After entering the “tESt” menu (see above), press the green button
↓ to
get to the “CyCLE” menu option.
b) Press the blue button
→ to enter the “CyCLE” menu. The display indicates
“0.0000”.
c) Press the blue button
→ to start the cycle.
For 100 seconds, the transmitter cycles from the 4 mA value to the
maximum PV value and back to the 4 mA value again.
Press the green button
↓ at any time to pause and resume the cycle.
d) Press the blue button
→ to exit the cycle and re-display “CyCLE”.
Loop-current Fixing
Screen display: LOOP
a) From the “tESt” or “CyCLE” display, press the green button
↓ to get to the
“LOOP” menu.
b) Press the blue button
→ to enter the “LOOP” menu, and the display will
zero to show “0.000”.
c) Press the blue button
→ to start the editing mode. The first digit flashes to
indicate it can now be edited.
d) Press the green button
↓ repeatedly to edit the flashing digit.