Dwyer HM35 - Manual (Page 5)

3 Operation
3.1
Switching on and off
Switching on
Briefly press the
On/Off
key
( )
(< 1 s)
For precise measurements, the HM35 must first be switched on for at
least 1 minute (warm-up phase).
Switching off Briefly press the On/Off key
( )
(< 1 s),
or
automatic switch-off 3, 10 or 60 minutes after the last time key operation
(automatic switch-off does not take place during Average, Change Rate
and Data Logging measurements or in IR
and network operation).
Notes
• The HM35 switches on automatically when the supply voltage is connected.
• The HM35 continues to work in battery mode following an interruption of the supply
voltage
• In case of a change in temperature, the HM35 must be allowed to adapt to the new
ambient temperature for a least 30 minutes while switched off in order to attain the
best measurement accuracy.
• The day/time, battery level and accuracy will be briefly displayed at switch on:
• After switch-on, the HM35 switches to the last operational mode used, e.g.:
• With the display filter activated, wait until the transient effect finishes (approx. 5 s).
4