User`s guide
USER'S GUIDE____________________________________________________________________ 
3.  Install the probe to the measuring position. If you are measuring 
in pressurized processes, see section Connection to Pressurized 
Processes Using the DSC74 Sampling Cell on page 52. When 
using other sampling cells than DSC74, make sure that the 
threads are compatible with the probe threads (G ½" ISO228/1). 
Be careful not to damage the sintered filter when installing the 
probe. 
4.  Before measuring, make sure that the air pressure settings of 
DM70 are correct and that auto-calibration has taken place (see 
section Automatic Auto-Calibration on page 27) 
5.  The basic display opens. Let the reading stabilize. 
CAUTION 
If you need to disconnect the probe from the indicator, first press the 
Power On/Off button to turn the indicator off. This ensures that all 
the settings and data are saved properly. 
NOTE 
When measuring low dewpoints, the stabilization times can be long, 
for example, one to two hours. Therefore, turn off the automatic 
power-off function (see section Automatic Power Off on page 38), 
turn on the automatic auto-calibration (see section Automatic Auto-
Calibration on page 27), and turn on the automatic sensor purge (see 
section Turning on/off Automatic Sensor Purge on page 30). 
Thus, the stabilization can be monitored, the auto-calibration ensures 
an accurate measurement, and the purge ensures the shortest possible 
response times. 
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