SOR RF Continuous Level Transmitter - Manual (Page 4)

4/16 Form 837 (05.13) ©SOR Inc.
Zero Adjustment (4 mA)

Close switch #1 on coarse adjustment switches for ZERO and SPAN. (See )

Open switches #2, #3, and #4 on both coarse adjustment switches per .

With the tank at 0%, view the reading on
the current meter. If the output is less
than 4 mA, turn the fine ZERO adjustment
clockwise until 4 mA is reached.
NOTE: Only one ZERO switch may be in the
closed position at any time.

If the output is greater than 4 mA, close the other switches one at a time (opening
the previous switch) until a reading less than 4 mA is attained. Turn the fine ZERO
adjustment clockwise until 4 mA is reached.
NOTE: If 4 mA cannot be obtained, see the troubleshooting chart on page 14.
Span Adjustment (20 mA)

Set the process to desired high level. (See )

Ensure SPAN coarse adjust switch #1 is in the closed position,
with all other switches open.

Rotate the SPAN fine adjustment pot clockwise until the meter
indicates 20 mA. If a 20 mA reading cannot be obtained,
proceed to step 10.

Open SPAN switch #1 (coarse) and close SPAN switch #2.
Repeat step 9. If a 20 mA reading cannot be obtained, repeat
the procedure closing switch #3 or #4 until 20 mA is indicated.
Empty and FIll Calibration
Electrical power must be disconnected from explosion proof models before
the cover is removed. Failure to do so could result in severe personal injury
or substantial property damage.
Electrical power must be disconnected from explosion proof models before
the cover is removed. Failure to do so could result in severe personal injury
or substantial property damage.

Install and connect power to the unit per previous pages. Install a current meter to the
unit per
.

Turn both potentiometers
(fine adjustments for
ZERO and SPAN) fully
counterclockwise.
(See
)
Coarse
Adjustment
switch #1 in
the closed
position, other
switches open
Fine Coarse Coarse Fine
ZERO SPAN
ZERO AND SPAN
ADJUSTMENTS
100%
0%