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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 

3

 of 23 

Document title 

 

Applicability: 

 
This manual is valid for instruments with firmware version  3.x  or higher.  Changes in the last 
character of the version number reflect minor changes in the internal software of the instrument 
that do not affect the manner in which the instrument should be operated. 

 

 

© 2015; Rotronic AG 

 

 IN-E-HL20-V1_16

 

www.

GlobalTestSupply

.com

Find Quality Products Online at:

[email protected]

Summary of Contents for 1520.HL-20

Page 1: ...HygroLog HL20 and HL21 data logger User Guide Instruction Manual Document Type Page 1 of 23 Document title HygroLog HL20 and HL21 Data Logger User Guide 2015 Rotronic AG IN E HL20 V1_16 www GlobalTes...

Page 2: ...11 Configurable settings 9 2 12 Factory default settings 10 2 13 Data logging 11 3 Operation 12 3 1 Front panel with optional display 12 3 2 Initial start up 13 3 3 Recording and displaying data model...

Page 3: ...ility This manual is valid for instruments with firmware version 3 x or higher Changes in the last character of the version number reflect minor changes in the internal software of the instrument that...

Page 4: ...Configuration of the HL20 and HL21 as well as the downloading and viewing of recorded data requires a PC with the ROTRONIC HW4 software installed as well as a service cable such as the AC3006 Based o...

Page 5: ...cator LED internal Pt100 RTD Models with display o HygroLog HL 20D same as HL20 LC display with backlight message bar and battery charge indicator o HygroLog HL 21D same as HL21 LC display with backli...

Page 6: ...following examples are based on the following assumptions o Fresh set of AA batteries 2900 mAh o Display backlight turned off if applicable o Log interval set to 30 minutes Battery lifetime in months...

Page 7: ...ator consists of a green and red LED The green side of the LED flashes every 5 seconds when logging is active The red side of the LED flashes every 5 seconds when a measured value is out of limits see...

Page 8: ...s 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 dis...

Page 9: ...ol Fp appear to the left of the numerical value depending on whether the dew point or frost point was selected For values below freezing the symbol Fp indicates that the value is a frost point above i...

Page 10: ...on is also suspended when the data logger is connected to the USB port of a PC by means of cable AC3006 2 12 Factory default settings Configurable Settings Factory default Unit system Metric except US...

Page 11: ...long key press or with the ROTRONIC HW4 software Recorded parameters Depending on the model the data logger records either temperature only or relative humidity and temperature A calculated value suc...

Page 12: ...er line corresponds to relative humidity or dew frost point and the bottom line corresponds to temperature In the event of an alarm out of limit value the display shows the symbol to the right of the...

Page 13: ...start up 3 2 1 Battery compartment The battery compartment is located on the back panel and can be opened after loosening the screw that holds the cover in place Insert three fresh AA alkaline batteri...

Page 14: ...Clock required configuration step The real time clock of the data logger should be set to agree with the date and time of the HW4 PC Use cable AC3006 to connect the data logger to a USB port of the HW...

Page 15: ...4 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 t...

Page 16: ...temperature difference between the probe and the environment to be measured the more time temperature equilibration requires This can be monitored with the optional display In extreme situations conde...

Page 17: ...in o Start HW4 on the PC and search for the data logger HW4 Main Menu Bar Devices and Groups Search for USB Masters o After finding the data logger with HW4 expand the device tree to see the data logg...

Page 18: ...perature measurement HL20 HL21 Sensor Pt100 RTD IEC 751 class A Measuring range 10 60 C Measurement accuracy at 23 C 0 3 C Repeatability 0 05 C Long term stability 0 1 C year Response time Typical 10...

Page 19: ...of limit value or logger problem Housing material ABS Housing protection grade HL20 IP 40 HL21 IP65 Overall dimensions 130 x 72 x 32 mm 5 1 x 2 8 x 1 3 Weight About 210 g 7 4 oz Conformity with stand...

Page 20: ...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 i...

Page 21: ...cument Type Page 21 of 23 Document title 6 Accessories For accessories and parts such as the HW4 configuration software service cables calibration accessories and spare dust filters please see documen...

Page 22: ...ices E M HW4v3 F2 018 HW4 software version 3 Device Manager and Data Logging HL20 HL21 data logger E M HW4v3 A2 001 HW4 software version 3 Probe Adjustment function AirChip 3000 devices E M AC3000 CP...

Page 23: ...010 Original release _11 Jun 20 2010 Updated document to HW4 software v 3 _12 Mar 9 2011 Corrected typing error in document _13 Feb 10 2015 Corrected accuracy Pt100 specification _14 April 16 2015 Gen...

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