wtw inoLab Multi 9310 IDS, Руководство по эксплуатации, Страница: 51 / 114

inoLab
®
Multi 9310 IDS Dissolved oxygen
ba75937e10 08/2021
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 When your accuracy requirements are especially high
 Routinely within the framework of the company quality assurance
7.3.3 Calibration procedures
The Multi 9310 IDS provides 2 calibration procedures:
 Calibration in water vapor-saturated air.
 Calibration via a comparison measurement (e.g. Winkler titration according
to DIN EN 25813 or ISO 5813). At the same time, the relative slope is
adapted to the comparison measurement by a correction multiplier. When
the correction multiplier is active, the
[Factor]
indicator appears in the mea-
suring window.
7.3.4 Calibrating with
Comparison meas.
(e.g. Winkler titration)
With the calibration procedure
Comparison meas.
, the measured value of the
sensor is adjusted to the nominal value of a comparison solution via a correc-
tion multiplier. The current correction multiplier is documented in the sensor
menu (
i
Factor = x.xxx
) and in the calibration record.
For this calibration procedure, the
Comparison meas.
setting must be set to
on
in the
Calibration
menu.
Proceed as follows to calibrate the D.O. sensor:
1. Connect the D.O. sensor to the meter.
2. Immerse the D.O. sensor in the reference solution.
3. Start the calibration with
<CAL>
.
4. Start the measurement with
<ENTER>
.
The measured value is checked for stability (stability control).
The [AR] status indicator is displayed. The measured parameter
flashes.
5. Wait for the measurement with stability control to be finished (beep,
[HOLD][AR] status indicator).
The factor that was set last is displayed.
O
2
7.92
mg/l
25.1
°C
Compare
03.04.2013
08:00
DO Adjust