Setra System Model 227 - Manual (Page 5)

See Diagram 6 below for nominal “installed” output at atmospheric pressure for
compound pressure ranges.
4.4 Current Output Span Adjustment
Span or full scale output adjustments should only be performed using an
accurate pressure standard (electronic manometer, digital pressure gauge,
etc.) with at least comparable accuracy to the 227 transducer (
±0.25% FS).
With full scale pressure applied to the pressure port, the span may be
adjusted by turning the span potentiometer screw. The span (full scale)
output is factory set to within
±0.08mA.
5
4.2 Voltage Output Span Adjustment
(Complete the zero adjustment before setting span.)
Span or full scale output adjustments should only be performed using an
accurate pressure standard (electronic manometer, digital pressure gauge, etc.),
with at least comparable accuracy to the 227 transducer (
±0.25% FS). With full
scale pressure applied to the pressure port, the span may be adjusted by turning
the span potentiometer screw. The span (full scale) output is factory set to within
±25 mV for the 5 VDC FS output or ±50mV for the 10 VDC FS output.
4.3 Current Output Zero Adjustment
While monitoring the current output, with zero pressure applied or with the
pressure port open to atmosphere, the zero may be adjusted by turning the
zero potentiometer screw. The factory setting is 4mA (
±0.08mA).
NOMINAL “INSTALLED” OUTPUT AT ATMOSPHERIC PRESSURE
PSI COMPOUND CURRENT
RANGE OUTPUT (mA)
-14.7 to 25 9.92
-14.7 to 50 7.63
-14.7 to 100 6.05
-14.7 to 250 4.89
-14.7 to 500 4.46
-14.7 to 1000 4.23
-14.7 to 3000 4.08
BAR COMPOUND CURRENT
RANGE OUTPUT (mA)
-1 to 1.7 9.92
-1 to 3.4 7.63
-1 to 7 6.00
-1 to 17 4.88
-1 to 35 4.44
-1 to 70 4.22
-1 to 200 4.07
Diagram 6