
Transmitter M400 42
© 02 / 2010 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter M400
Printed in Switzerland 52 121 378
7 Sensor Calibration
(PATH: Cal)
The calibration key c allows the user one-touch access to sensor calibration and verification
features.
h
NOTE: During Calibration on Channel A, a flashing ”H” (Hold) in the upper left corner of the dis-
play indicates a calib ration is in process with a Hold condition active. (The hold output function
needs to be activated.) See also chapter 3.3 “Display”.
7.1 Enter Calibration Mode
While in Measurement mode press the c key. If the display prompts you to enter the calibration
security code, press the or . key to set the calibration security mode, then press the
[ENTER] key to confirm the calibration security code.
Press the or . key to select the type of calibration desired.
Select the desired sensor Calibration task. The choices for each sensor type are:
Conductivity = Conductivity, Resistivity*, Temperature**, Edit**, Verify
Oxygen = Oxygen, Temperature**, Edit**, Verify
O2 opt = Oxygen***, Verify***
pH = pH, mV**, Temperature**, Edit pH**, Edit mV**, Verify, ORP***
ISFET = ISFET**, Temperature**, Edit ISFET**, mV**, Edit mV**, Verify**,
CO
2
= CO2**, Temperature**, Edit**, Verify**
Press [ENTER].
* not available at M400 Type 1 Cond Ind
** only on channel ”A”
*** only available on channel ”B”
After every successful calibration, the three options are available:
Adjust: Calibration values will be overtaken und used for the measurement. Additionally,
the data will be stored in the calibration history*.
Calibrate: Calibration values will be stored in the calibration history* for documentation,
but will not be used for the measurement. The calibration values from the last valid
adjustment will be further used for the measurement.
Abort: Calibration values will be discarded.
* only available with ISM sensors
Comentarios a estos manuales