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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 2 of 17
Document title
© 2010-2011; Rotronic AG
Table of contents:
1.
Overview.................................................................................................................................. 3
1.1
General ................................................................................................................................ 3
2.
General description ................................................................................................................ 4
2.1
Models ................................................................................................................................. 4
2.2
Required accessories .......................................................................................................... 4
2.3
Batteries ............................................................................................................................... 4
2.4
Real time clock .................................................................................................................... 5
2.5
Memory ................................................................................................................................ 5
2.6
Function key ........................................................................................................................ 5
2.7
Status indicator (LED).......................................................................................................... 5
2.8
Service and data connector ................................................................................................. 6
2.9
Optional display ................................................................................................................... 6
2.10
Operating limits .................................................................................................................... 6
2.11
Configurable settings ........................................................................................................... 6
2.12
Factory default settings ....................................................................................................... 8
2.13
Data logging ......................................................................................................................... 8
3.
Operation................................................................................................................................. 9
3.1
Front panel with optional display ......................................................................................... 9
3.2
Initial start-up ..................................................................................................................... 10
3.3
Recording and displaying data (models without display) .................................................. 12
3.4
Displaying and recording data (models with display) ........................................................ 12
3.5
Practical advice for measuring temperature and humidity ................................................ 13
4.
Maintenance .......................................................................................................................... 13
4.1
Periodic calibration check .................................................................................................. 13
4.2
Firmware updates .............................................................................................................. 14
5.
Technical data ...................................................................................................................... 14
5.1
Specifications ..................................................................................................................... 14
5.2
Dew point accuracy ........................................................................................................... 16
6.
Accessories .......................................................................................................................... 16
7.
Supporting documents ........................................................................................................ 17
8.
Document releases .............................................................................................................. 17
