11
Preparing the Meter for Calibration
Before starting calibration, make sure you are in the correct measurement mode.
When you switch on the meter, the meter starts up in the units you shut it off in.
For best results, select a standard value close to the sample value you are measuring.
Alternatively use a calibration solution value that is approximately
2
⁄
3
the full scale
value of the measurement range you plan to use. For example, in the 0 to 1999 µS
conductivity range, use a 1413 µS solution for calibration.
Do not reuse calibration solutions after calibration. Contaminants in the solution can
affect the calibration, and eventually the accuracy of the measurements. Use fresh
calibration solution each time you calibrate your meter.
NOTE:
These meters are factory set to a temperature coefficient of 2.1% per °C. For
most applications this will provide good results. See Program P5.1 on page
35 to set the temperature coefficient to a different value. See Addendum 3,
“Calculating Temperature Coefficients” on page 48 to determine the
appropriate temperature coefficient for your solution.
NOTE:
The factory default value for normalization temperature is 25°C. If you need
to normalize to a value other than 25°C, see Program P5.2 on page 36.
4.2
