Elcometer 130 User Manual page 7

3 GETTING STARTED (continued)
3.6 CALIBRATION OFFSET FUNCTION (MODEL T)
Soluble salts should be measured using high purity water. Non-pure water, with a maximum
conductivity of 237.5µS/cm (equivalent to 2µg/cm or 119 ppm ), may be used by setting a calibration
offset on the Elcometer 130 Model T.
To set the calibration offset, fill a bottle with the non-pure water, press
Menu/Calibration/Calibration Offset and follow the on-screen instructions to set the
offset value. The calibration offset should be reset each time the bottle is refilled. The
Calibration Offset icon will be displayed on screen together with the offset value.
When Calibration Offset is in use, the Temperature Compensation function will be switched on
automatically, see section 3.7.
3.7 TEMPERATURE COMPENSATION
The temperature of the substrate will affect the reading. As the Elcometer 130 has been calibrated at
25°C, to provide an accurate measurement of soluble salt levels the reading must be adjusted to take
into consideration any temperature variance.
The automatic Temperature Compensation function on the Elcometer Model T measures the
temperature of the wet filter paper when placed on the measurement electrodes and using this value,
adjusts the reading accordingly. To activate, press Menu/Setup/Temperature Comp.
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Nominal values
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