ROTRONIC HygroLog HL20 - Manual (Page 14)

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 14 of 17
Document title
© 2010-2011; Rotronic AG IN-E-HL20-V1_12
Procedure for adjusting the data logger with the ROTRONIC HW4 software:
Use cable AC3006 to connect the service connector of the data logger to the USB port of
a PC with the ROTRONIC HW4 software installed. Note that the ROTRONIC USB driver
must be installed on the PC as explained in the HW4 manual E-M-HW4v3-Main
Start HW4 on the PC and search for the data logger (HW4 Main Menu Bar > Devices and
Groups > Search for USB Masters).
After finding the data logger with HW4, expand the device tree to see the data logger
functions. Select Probe Adjustment.
For further instructions see HW4 manual E-M-HW4v3-A2-001
4.2 Firmware updates
Firmware updates will be available on the ROTRONIC website for downloading. Firmware files
are given a name that shows both to which device the file applies and the version number of the
firmware. All firmware files have the extension HEX. Procedure for updating the firmware:
Use cable AC3006 to connect the service connector of the data logger to the USB port of
a PC with the ROTRONIC HW4 software installed. Note that the ROTRONIC USB driver
must be installed on the PC as explained in the HW4 manual E-M-HW4v3-Main
Copy the firmware update file from the ROTRONIC website to the PC.
Start HW4 software on the PC and search for the data logger (HW4 Main Menu Bar >
Devices and Groups > Search for USB Masters).
After finding the data logger, expand the device tree to see the data logger functions.
Select Device Manager. In the Device Manager menu bar select Tools > Firmware
Update. For instructions see document E-M-HW4v3-F2-018
5. Technical data
5.1 Specifications
General HL20 / HL21
Device type Humidity-temperature data logger with internal sensor(s)
Battery type 3 x AA (1.5 V) alkaline
Battery life time
Depends on log interval and other settings. Examples based on a 30 minutes log
interval:
- Models w/o LC display: 20 months
- Models with LC display, display sleep function set to 1 minute: 13 months
Low battery indication Yes (with HW4 software or with optional display)
Humidity measurement
HL20
Sensor ROTRONIC Hygromer ® IN1
Measuring range 0…100 %RH
Measurement accuracy at 23 °C ±0.8 %RH
Repeatability 0.3 %RH
Long term stability < 1 %RH / year
Response time Typical 3 min. (depends on air flow)