Multi 3430
Operation
72
ba75865e19
04/2015
4.9.5
D.O. calibration
Why calibrate?
D.O. sensors age. This changes the slope of the D.O. sensor. Calibra-
tion determines the current slope of the sensor and stores this value in
the instrument.
Note
The
FDO
®
925 D.O. sensor ages so little it does not have to be regu-
larly calibrated.
To detect changes of the sensor as early as possible, the FDO
®
Check
procedure can be useful (see section 4.9.4).
When to calibrate?
If your evaluation of the FDO
®
Check procedure suggests a calibra-
tion
When the calibration interval has expired
If your accuracy requirements are especially high
Routinely within the scope of company quality assurance measures.
Calibration procedures
Calibration in water vapor-saturated air.
To calibrate the
FDO
®
925 sensor, use the check and storage vessel.
Stability control
(AutoRead)
In calibration, the Stability control function (AutoRead) is automatically
activated.
Display calibration data
and output to interface
You can have the data of the last calibration displayed (see section
4.10.6). Subsequently, you can transmit the displayed calibration data
to the interface, e. g. to a PC, with the
<PRT>
key.
Note
The calibration record is automatically transmitted to the interface after
calibrating.
Sample record
Calibration evaluation
After the calibration, the meter automatically evaluates the current sta-
tus of the calibration. The evaluation appears on the display and in the
calibration record.
Multi 3430
Ser. no. 10139695
CALIBRATION Ox
Calibration date
15.03.2014 16:13:33
FDO 925
Ser. no. 10146858
SC-FDO 925
10158765
Relative slope
0.98
Sensor
+++
Содержание WTW Multi 3430
Страница 1: ...OPERATING MANUAL ba75865e19 04 2015 Multi 3430 DIGITAL METER FOR DIGITAL IDS SENSORS...
Страница 6: ...Multi 3430 6 ba75865y19 04 2015 9 2 Firmware Update for IDS Sensors 132...
Страница 14: ...Multi 3430 Overview 14 ba75865e19 04 2015...
Страница 18: ...Multi 3430 Safety 18 ba75865e19 04 2015...
Страница 22: ...Multi 3430 Commissioning 22 ba75865e19 04 2015 cable 3 3 4 Setting the date and time 3 See section 4 3 5...
Страница 124: ...Multi 3430 What to do if 124 ba75865e19 04 2015...
Страница 133: ......