5-12 | Model 931S / Model 932S UV Analyzers
Voltage Calibration
The voltage outputs are calibrated at the factory. Most applications will
use current outputs rather than the non-isolated voltage outputs. If the
Customer I/O
board is replaced, then the voltage outputs should be cali-
brated if they are used for data acquisition. This is done from the
Output
Setup
dialog box. Calibration of a voltage output is performed by entering
the measured low-scale (Zero) and full-scale (Span) signals for each out-
put. These values are used to offset the output to the correct values.
To calibrate the voltage outputs:
1. Measure the Zero (low-scale) signal of each output:
a. Click
Zero Cal
to change its status to On. The status of
Normal
,
Mid-Scale
, and
Span Cal
should be Off.
b. Connect a voltage meter to
Pins 1
and
2
(at
J108
on the
Customer
I/O
board) and measure the voltage of Output 1. Under
Voltage
Outputs
, enter the value next to
Zero (mV)
, under the first column
(Output
1
). Place a 250 Ohm resistor in series of the multi-meter
for accurate calibration.
c. Repeat this step for Output 2 (
Pins 3
and
4
), Output 3 (
Pins 5
and
6
), and Output 4 (
Pins 7
and
8
), recording the value for each
output in the corresponding field.
d. Click
Apply
to save the changes.
e. To test the accuracy of the output channels, click
Mid-Scale
to turn
On this function
.
Verify the voltage outputs are 3000 mV, ± 5 mV.
f. Click the
Zero Cal
button to change its status to Off.
2. Measure the Span (full-scale) signal of each output:
a. Click the
Span Cal
button to change its status to On. The status of
Normal
,
Mid-Scale
, and
Zero Cal
should be Off.
b. Connect a voltage meter to
Pins 1
and
2
(at
J108
on the
Customer
I/O
board) and measure the voltage of Output 1. Under
Voltage
Outputs
, enter the value next to
Span (mV)
, under the first col-
umn (Output
1
).
Repeat this step for Output 2 (
Pins 3
and
4
), Output 3 (
Pins 5
and
6
), and Output 4 (
Pins 7
and
8
), recording the value for each
output in the corresponding field.
Setup (tab)
Output
Содержание 931S
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Страница 71: ...Installation and Start Up 3 25 Figure 3 8 Conduit entries and AC power connection locations Lower Enclosure...
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Страница 221: ...Maintenance and Troubleshooting 6 37 Figure 6 12 Optical Bench Chopper Assembly Maintenance diagram 100 2313 1A...
Страница 237: ...Maintenance and Troubleshooting 6 53 Figure 6 14 AC Distribution board P N 100 1771...
Страница 238: ...6 54 Model 931S Model 932S UV Analyzers Figure 6 15 Host Controller board P N 100 1757 SW100...
Страница 239: ...Maintenance and Troubleshooting 6 55 Figure 6 16 Microcontroller board P N 100 1781 SW400...
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Страница 263: ...Appendix A Drawings A 7 RS 232 Cable Communications Connections 300 9480...
Страница 264: ...A 8 Model 931S Model 932S UV Analyzers Optical Bench Board 100 1662...
Страница 265: ...Appendix A Drawings A 9 PMT Buffer Board 100 0140...
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