Signal Adjustment - Omega Engineering DRF-POT User Manual

SIGNAL ADJUSTMENT

To proceed to adjust a range of input and
output signals, first select with the
appropriate jumpers, the signal ranges
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Adjustment Example for model DRF-POT
1.- Connect potentiometer to input
terminals
(8 «term+», 9 «term-» and 7 «signal»)
2.- Connect a multimeter to the output
signal terminals
(4 and 5 for mA or 4 and 6 for
Vdc).
(Values in brackets are examples for a
calibration 0/100% = 0/10Vdc)
3.- Input a zero signal
Operate offset potentiometer until
getting a zero output
4.- Input the difference between the high
and low input levels
Operate span potentiometer until
User's Manual DRF Series
Selection Jumpers : Output Signal Range
J
UMPERS
S
UTPUT IGNAL
P
OTENTIOMETER
P
OTENTIOMETER
J
UMPERS
S Selection Jumpers : Input Signal Range
IGNAL
(See next page)
.
(0 %)
(0Vdc).
(100-0=100% Aac).
Page 6
which include your desired adjustment.
Then proceed to the adjustment.
0/20mA 0/10Vdc
(4/20mA)
getting an output which is the
difference between the high and low
output levels
(10-0=10Vdc)
5.- Input low input level
Operate offset potentiometer until
getting the low level output
6.- Input high input level and check that
that the output also matches the
desired level
(100 % =10Vdc)
If more accurate measurement is needed,
repeat steps 5 and 6.
Most of the input / output combinations
will be properly adjusted within the
instrument accuracy after these steps.
Close front cover once calibration is
finished.
0/1Vdc
.
.
(0 %)
.
(0Vdc)
.