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Operating Instructions
An alternative method for setting up the Current Loop outputs is to connect a
250 ohm ±1% resistor across the current loop output in lieu of the current meter.
Using a Voltmeter connected across the resistor follow the procedure above but
adjust the output for the following values:
% FS
0
100
6.7.4. Calibration the IZS Option O
This function sets the IZS O
and full scale, measures the actual O
generator lamp drive voltage and generator's O
Whenever a certain O
data in this table to interpolate the correct drive voltage for the desired O
Because the instrument waits 5–7 minutes at each step for
the O
108
Table 6-13: Current Loop Output Check
Voltage across Resistor for
2-20 mA
0.5 VDC
5.0
Generator output to a series of levels between zero
3
output level is requested, the instrument's CPU uses the
3
level to stabilize, this calibration operation often takes
3
more than one hour to complete.
Voltage across Resistor for
Generator
3
output at each level then records the
3
output level in a lookup table.
3
NOTE
Model 400E Ozone Analyzer
Instruction Manual
4-20 mA
1 VDC
5.0
3
P/N 04316 Rev: B
output.
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