wtw Multi 9420, Operating Manual

Page: 38 / 132

pH value Multi 9420
38
ba75964e04 04/2015
Calibration record
4.2.7 Continuous measurement control (CMC function)
The Continuous Measurement Control (CMC function) facilitates to evaluate
the current measured value instantly and definitely.
After each successful calibration the scale of the pH measuring range is
displayed in the measured value display. Here you can very clearly see
whether or not the current measured value is in the calibrated part of the
measuring range.
Clean the IDS sensor according
to the sensor operating manual
Error Error
<-30
or
>+30 <-62.0
or
> -50,0
Error elimination (see section 13
W
HAT TO DO IF
..., page 114)
For pH IDS sensors you can optionally enable a more finely graded
calibration evaluation (QSC) (see section 4.2.8 QSC
FUNCTION
(
SENSOR QUALITY CONTROL
), page 40).
Display Calibration
record Zero point
[mV] Slope [mV/pH]
CALIBRATION pH
03.04.2013 07:43:33
SenTix 940
Ser. no. B092500013
TEC
Buffer 1
4.01
Buffer 2 7.00
Buffer 3 10.01
Voltage 1 184.0 mV
Voltage 2 3.0 mV
Voltage 3 -177.0 mV
Temperature 1 24.0 °C
Temperature 2 24.0 °C
Temperature 3 24.0 °C
Slope -60.2 mV/pH
Asymmetry 4.0 mV
Sensor +++
etc...