Orp Calibration; Conductivity/Tds Measuring And Calibration - Tintometer Lovibond SensoDirect 150 Mode D'emploi

3.5 ORP calibration

ORP calibration is only possible if the ORP buffer solution value is > 100 mV!
ORP calibration at less than 100 mV is not permitted!
1. Attach the ORP electrode by connecting the ORP electrode to the meter.
2. Power on the meter, and set the mode and function to "mV" (refer to chapter 3.3).
3. Immerse the sensing head of the ORP electrode in the ORP standard buffer solution.
The upper display will show the ORP value in mV.
4. Press the "REC" button and "HOLD" button at the same time. The display will show
the following screen as an example. Now release.
201
5. Use " " button, " " button to adjust the upper display value to exactly match the
ORP buffer solution value. Press the "Enter" button twice to save the calibration data
and finish the calibration procedure.
4.

Conductivity/TDS Measuring and Calibration

The meter default settings are as follows:
•
The display unit is set to conductivity (µS, mS).
•
The temperature unit is set to °C.
•
Temp. compensation factor is set to 2.0% per °C.
•
Auto range.
•
Auto power off.
•
Data logger function sampling time: 2 seconds.
Display layout
24.2 °C
Temp. value Temp unit
28
235
mV
Aiv
Adjust
Measurement Value
19.00
200.0 µS
Auto Range
Auto or Manual
Range
range
scale
SensoDirect 150