Dew point accuracy, Accessories, 2 dew point accuracy – ROTRONIC HygroLog HL20 User Manual
Page 16: Hygrolog hl20 and hl21 data logger: user guide
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 16 of 17
Document title
© 2010-2011; Rotronic AG
IN-E-HL20-V1_12
Environmental limits
HL20 / HL21
Operating limits
-
10….60 °C (models w/o display), 0….50 °C (models with display)
0…100 %RH, non condensing
Critical environments
Humidity sensor: as per DV04-14.0803.02 - Critical chemicals
5.2 Dew point accuracy
The HL20 can be configured to calculate either the dew point or frost point based on the
measurement of relative humidity and temperature. The accuracy of this conversion varies,
depending on the humidity and temperature conditions as shown in the graph below:
Example
: at a temperature of 20 ˚C, a dew point value of -37 ˚C is measured with an accuracy of
± 1.0 ˚C or better.
6.
Accessories
For accessories and parts such as the HW4 configuration software, service cables, calibration
accessories and spare dust filters, please see document E-M-HC2-accessories