Calibrate The Measuring Cell; Calibration Date And Factor; Calibration Procedure - Hanna Instruments PCA 311 Instruction Manual

Note:

CALIBRATE THE MEASURING CELL

CALIBRATION DATE AND FACTOR

CALIBRATION PROCEDURE

Note:
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The alarms could be separately activated or inactivated.
To modify the alarms status, enter the "Bromine Menu" - "Alarms
Bromine" menu and edit "Alarm Hi" or "Alarm Lo" status.
When the status is set to "Inactive", the alarm is ignored.
The Alarm high must be greater than Alarm low value. The
analyzer display a warning if the settings are incorrect.
The Alarm high setpoint and Alarm low setpoint could be
quickly consulted on one bromine measuring panel. When
an alarm is disabled, the —.— is displayed instead of alarm
value.
The PCA 311-331 analyzers have the possibility to calibrate
the measuring cell.
When a new calibration is performed, calibration factor is
recalculated and all measurements are multiplied with it.
The last calibration
date can be found in
the "Bromine menu" -
"Cal. Measuring Cell"
- "Cal. Date". Cali-
bration date is in the
YY / MM / DD format.
A warning "Br Calibration Old" is displayed if one month
elapsed from the last calibration.
The calibrated date is updated after a new calibration is done.
The calibration factor is displayed in "Bromine menu" - "Cal.
Measuring Cell" - "Factor".
The default calibration factor is 1.000. Each measurement
result is multiplied with calibration factor.
The calibration factor could be reset to 1.000 by activating
the "Bromine menu" - "Cal. Measuring Cell" - "Reset Cal.
Factor" function.
To calibrate the measuring cell, follow the steps:
• Withdraw a sample of the measured liquid directly from the
drain port of the measuring cell (#11) by opening its valve
(#10) - see figure on page 10.
Withdraw the sample just before the electrovalve stops the
liquid flow to the measuring cell.