Setra System Model 223 - Manual (Page 5)

5
4.1 Voltage Output Zero Adjustment
While monitoring the voltage between the positive output (+OUT) and
common (COM), and with the pressure port open to atmosphere, or with zero
pressure applied, the zero may be adjusted by turning the zero potentiom-
eter screw. For the 5 VDC Full Scale Output, the tolerance on zero and span
settings is
±25mV. For the 10 VDC Full Scale Output, the tolerance on zero
and span settings is
±50mV. For absolute pressure ranges, the zero should be
adjusted with a full vacuum applied. See the chart below for nominal
“installed” output at atmospheric pressure for compound pressure ranges.
NOMINAL “INSTALLED” OUTPUT AT ATMOSPHERIC PRESSURE
4.2 Voltage Output Span Adjustment
(Complete the zero adjustment before setting span.)
Span or full scale output adjustments should only be performed by using an
accurate pressure standard (electronic manometer, digital pressure gauge,
etc.), with at least comparable accuracy to the 223 transducer (
±0.25% FS).
With full range 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
±25mV for the 5 VDC FS output or ±50mV
10 VDC FS output.
Diagram 4
PSI 5 VDC Full Scale Outputs 10 VDC Full Scale Outputs
Compound 0.2 to 5.2 0 to 5 VDC 0.2 to 10.2 0 to 10 VDC
Range Voltage (VDC) Voltage (VDC) Voltage (VDC) Voltage (VDC)
(Factory Set to within
±25mV)
(Factory Set to within
±50mV)
-14.7 to 25 2.051 1.851 3.903 3.703
-14.7 to 50 1.336 1.136 2.472 2.272
-14.7 to 100 0.841 0.641 1.482 1.282
-14.7 to 250 0.478 0.278 0.755 0.555
-14.7 to 500 0.343 0.143 0.486 0.286
-14.7 to 1000 0.272 0.072 0.345 0.145
-14.7 to 3000 0.224 0.024 0.249 0.049
Bar 5 VDC Full Scale Outputs 10 VDC Full Scale Outputs
Compound 0.2 to 5.2 0 to 5 VDC 0.2 to 10.2 0 to 10 VDC
Range Voltage (VDC) Voltage (VDC) Voltage (VDC) Voltage (VDC)
(Factory Set to within
±25mV)
(Factory Set to within
±50mV)
-1 to 1.7 2.052 1.851 3.904 3.704
-1 to 3.4 1.336 1.136 2.473 2.273
-1 to 7 0.825 0.625 1.450 1.250
-1 to 17 2.494 0.278 0.756 0.556
- 1 to 35 0.339 0.139 0.478 0.278
-1 to 70 0.270 0.070 0.341 0.141
-1 to 200 0.225 0.025 0.250 0.050