IN-E-HL20-V1_16
Rotronic AG
Bassersdorf, Switzerland
Document code
Unit
HygroLog HL20 and HL21 data logger:
User Guide
Instruction Manual
Document Type
Page
8
of 23
Document title
2.9 Optional display
The optional LC display has a backlight which can be enabled or disabled when configuring the
data logger.
o
HL20D: depending on the configuration of the logger, the LC display shows relative humidity
and temperature or the dew / frost point and temperature. The top line displays humidity
(%RH or the dew / frost point)
o
HL21D: the LC display shows temperature.
The LC display can be configured to show the measured or calculated values with either one or
two decimals.
Note:
The LC display is automatically turned on when the data logger is connected to the USB port of a
PC by means of cable AC3006 or equivalent.
2.10 Operating limits
Models without display:
o
-10…60 °C with the factory supplied alkaline batteries
o
0…100 %RH, non condensing
Models with display:
o
0…50 °C with the factory supplied alkaline batteries
o
0…100 %RH, non condensing
© 2015; Rotronic AG
IN-E-HL20-V1_16
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