ROTRONIC HygroLog HL20 - Manual (Page 12)

IN-E-HL20-V1_12
Rotronic AG
Bassersdorf, Switzerland
Document code Unit
HygroLog HL20 and HL21 data logger:
User Guide Instruction Manual
Document Type
Page 12 of 17
Document title
© 2010-2011; Rotronic AG IN-E-HL20-V1_12
Other initial configuration steps
Other initial configuration steps include the following:
- Temperature measurement unit
- Log interval
- Recording mode (start-stop or loop)
For additional instructions, see document E-M-HW4v3-F2-018.
3.2.3 Optional display configuration
To conserve battery power, models with a display are shipped with the Display Sleep function
enabled (set to 1 minute) and with the display backlight disabled. When configured in this manner
the data logger can record data for extended periods of time
For additional instructions regarding the configuration of the display, see document
E-M-HW4v3-F2-018.
3.3 Recording and displaying data (models without display)
To start or stop recording data, press on the function key for a few seconds. When the
data logger is recording data, the status indicator flashes green every 5 seconds
The ROTRONIC HW4 software is required to view the measured or calculated data on a PC
monitor. Connect the data logger to the HW4 PC as explained under “Initial Start-up”. HW4 is
also required to download and save the recorded data to disk. For additional instructions, see
document E-M-HW4v3-F2-018.
3.4 Displaying and recording data (models with display)
Displaying data
When the display sleep function is enabled, the display goes blank after some time in order to
conserve battery power.
To view the measured or calculated data, press briefly on the function key. When the
display sleep function is not enabled, the display can be manually turned off by
pressing briefly on the function key.
Start or stop recording data
To start or stop recording data, press on this key for a few seconds. When the data
logger is recording data, this is indicated by the display message bar and by the LED
indicator flashes green every 5 seconds