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7835
Hydrazine Monitor
7 Calibration
7.1 Calibrating the System – General Tasks
Depending on the operating conditions, perform a calibration
every 1 to 4 weeks.
Rinse out the standard solution container with a small amount of
fresh standard solution before filling and open the outlet valve
from the container.
7.2 Sensor Calibration
Note. During the calibration and recovery period the alarm
functions and analog outputs are maintained at their existing
value(s) prior to calibration.
To perform a sensor calibration:
1. At the transmitter, enter the Standard access level and, at
the Calibrate menu, press
parameters is displayed:
Calibrate
Sensor Calibration
Standard Solution
Restore Defaults
2. Use the
/
keys press to highlight the Sensor
Calibration option and press
The Sensor Calibration page is displayed.
3. Press
to start the calibration.
A bar indicates the calibration progress and the message
Settling-Please Wait is displayed beneath the time bar.
(Sensor calibration typically lasts 15 minutes.) The
hydrazine value and process temperature are also
displayed.
4. When calibration is complete, the hydrazine value (as
µg kg) efficiency and calibration coefficient ratings are
displayed, for example:
Hyd
Efficiency
Coefficient
5. Press
to exit the Sensor Calibration option and return
to the Calibrate page.
6. To return to the Operator page, press
Standard Solution value, press
in Section 7.3.
IM/7835–EN Rev. P
. A list of calibration
.
80.0 µg/kg
100.0%
0.1917
or, to set the
and proceed to step 3
7.3 Setting the Standard Solution Value
To set the Standard Solution value:
1. At the transmitter, enter the Standard access level and, at
the Calibrate menu, press
parameters is displayed:
Calibrate
Sensor Calibration
Standard Solution
Restore Defaults
2. Use the
/
keys press to highlight the Standard
Solution option and press
The Calibrate page is displayed.
3. Press
to edit the Standard Solution value and press
the
key to move to each number in the value.
Use the
/
keys to increase/decrease each number.
4. When value is set, press
page.
5. Press
twice to return to the Calibrate main menu.
7.4 Restoring Calibration Defaults
To restore calibration coefficients to their factory-set defaults:
1. At the transmitter, enter the Standard access level and, at
the Calibrate menu, press
parameters is displayed:
Calibrate
Sensor Calibration
Standard Solution
Restore Defaults
2. Use the
/
keys press to highlight the Restore
Defaults option and press
The Calibrate page is displayed with a blank Restore
Defaults progress bar.
3. Press
to start the Restore Defaults routine.
The progress bar indicates completion status and, when
the routine is complete, the bar reverts to empty.
4. Press
twice to return to the Calibrate main menu.
7 Calibration
. A list of calibration
.
to return to the Calibrate
. A list of calibration
.
19
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