Elcometer 138 User Manual page 9

5 USING THE CONDUCTIVITY METER (continued)
In measurement mode: switches to hold mode, freezing the display.
HOLD
ENT
In hold mode: switches back to measurement mode.
In manual calibration and temperature calibration modes: exits
calibration without conrming calibrated values.
In range selection mode: selects a range.
INC
Located inside the battery compartment
In measurement mode: enters calibration mode.
In calibration mode: adjusts the calibration values.
DEC
5.4 SWITCHING ON / OFF
To switch on: Press the On/Off button '
will be displayed on screen (Figure 2).
To switch off: Press the On/Off button '
Note: The meter will switch off automatically after 8.5 minutes of inactivity.
5.5 SELECTING THE MEASUREMENT RANGE
The Elcometer 138E can be set to limit the reading to a particular
measuring range (PU, LO or HI) or full scale (AUTO). The default
setting is AUTO.
Measuring Range &
Resolution
www.elcometer.com
Figure 2: Power-Up Sequence
Model Number &
Software Revision
Number
0 - 200.0µS/cm
PU:
0 - 2000µS/cm
LO:
0 - 20mS/cm
HI:
'. The power-up sequence
Selected range &
upper limit of the
range
', the screen will go blank.
0.1µS/cm
1µS/cm
0.01mS/cm
R
Measurement
Mode
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