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HOBO LCD Temp/RH User’s Manual

 

Thank you and congratulations on your purchase of the HOBO

®

 LCD data logger 

from Onset Computer Corporation. Please read this manual thoroughly before 
operating your HOBO LCD logger. Refer to the BoxCar

®

 Pro User’s Manual for 

details on using the host PC software. If you are also using a Palm™ handheld and 
HandCar

®

 software, refer to the HandCar User’s Manual. 

 

WARNING: The HOBO LCD Logger, Remote Alarm, and/or Autodialer are 

not certified for and should not be deployed in any hazardous (classified) 
location where ignitable concentrations of gas and/or dust exist. 

IMPORTANT: The HOBO LCD Logger, Remote Alarm, and/or Autodialer are 
not intended for and should not be used for medical or life support, 
aerospace, or nuclear installation applications.

 

Software/Cable Requirements 

The HOBO LCD logger requires Onset Computer Corporation’s BoxCar Pro 
software version 4.3 or later and a PC interface cable for operation. For optional 
operation with a Palm handheld, the HOBO LCD logger requires HandCar 
software version 1.1 or later, and a Palm handheld interface cable. 

Functional Overview 

The HOBO LCD logger records time-stamped relative humidity (RH) and 
temperature measurements in nonvolatile memory and also displays the current 
temperature and RH on the LCD. Logging parameters are set from a host 
computer running BoxCar Pro software. The logger is then started using the host 
computer or a Palm handheld running HandCar software. The logger updates 
displayed measurements every five seconds. The sample (logging) interval is 
software-selectable from one second to nine hours. Data in the LCD logger can be 
offloaded to a host computer or Palm handheld. 

Additional Features 

 

ALERT indicator signals when temperature or relative humidity limits have 
been exceeded (software-selectable using BoxCar Pro).  

 

Contact closure connections for optional remote audio alarm and/or 
autodialer. Triggers on ALERT conditions. 

 

Memory Left (MEM LEFT) indicator on LCD shows how much data storage 
space remains. 

 

Battery Level (BATT LEVEL) indicator on LCD shows how much useful 
battery life remains. 

 

Software-selectable Fahrenheit or Celsius temperature units.  

 

Internal relative humidity measurement range of 15% to 95%. 

 

Internal temperature measurement range of -20°C to +50°C (-4°F to +122°F). 

 

External probe model with choice of temperature and temperature/RH probes 
(see specifications on page 13). 

 

Operates for one year on three alkaline AAA batteries in typical conditions. 

 

HOBO LCD Temp/RH User’s Manual

 

15

 

product(s), properly packaged to protect against further damage, to Onset (at your 
expense) with the RMA number marked clearly on the outside of the package. 
Onset is not responsible for any package that is returned without a valid RMA 
number or for the loss of the package by any shipping company. Products must be 
clean and free of any toxins before they are sent back to Onset or they may be 
returned to you. 

Repair Policy 

Products that are returned after the warranty period or that are damaged by the 
customer as specified in the warranty provisions can be returned to Onset with a 
valid RMA number for evaluation. 

Optional Services 

Please contact Onset for more information and prices on: 

 

ASAP Repair.

 Onset will expedite the repair of a returned product. 

 

Data-back™ Service.

 HOBO data loggers store data in nonvolatile 

EEPROM memory. Onset will, if possible, recover your data to a disk. 

 

Tune Up Service.

 Onset will examine and retest any HOBO data logger.  

Warranty 

Onset Computer Corporation (“Onset”) warrants to the original end-user purchaser for a 
period of one year from the date of original purchase that the HOBO

®

 product(s) purchased 

will be free from defect in material and workmanship. During the warranty period Onset 
will, at its option, either repair or replace products that prove to be defective in material or 
workmanship. This warranty shall terminate and be of no further effect at the time the 
product is (1) damaged by extraneous cause such as fire, water, lightning, etc. or not 
maintained in accordance with the accompanying documentation; (2) modified; (3) 
improperly installed; (4) repaired by someone other than Onset; or (5) used in a manner or 
purpose for which the product was not intended. 

Disclaimer and Limitation of Liability 

ONSET’S OBLIGATION UNDER THIS WARRANTY IS LIMITED TO REPAIR OR 
REPLACEMENT OF THE PRODUCT. ONSET SHALL HAVE NO LIABILITY FOR 
ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM THE 
USE OF THE HOBO

®

 PRODUCT(S) EVEN IF ONSET KNEW OR SHOULD HAVE 

KNOWN OF THE POSSIBILITY OF SUCH DAMAGES. 

Onset shall not be liable for injury to persons or property resulting from the use of HOBO

®

 

product(s) or the failure of such product(s). Onset’s liability, if any, shall be limited to the 
original purchase price paid for the product. Onset assumes no liability for installation of 
the product(s) and/or interruptions of service due to strikes, riots, floods, fire, and/or any 
cause beyond Onset’s control. 

Legal Remedies  

This warranty gives you specific legal rights. You may also have other rights which vary by 
jurisdiction. The remedies provided herein are in lieu of all other remedies, express or 
implied. 

 

Summary of Contents for HOBO

Page 1: ...s and brand names may be trademarks or registered trademarks of their respective owners The CE Marking identifies this product as complying with all relevant directives in the European Union EU Document 7054 A MAN H14 00X HOBO LCD Data Logger User s Manual Inside this package The Onset HOBO LCD data logger is shipped with HOBO LCD data logger part number H14 001 internal sensor or H14 002 external...

Page 2: ...nditions HOBO LCD Temp RH User s Manual 15 product s properly packaged to protect against further damage to Onset at your expense with the RMA number marked clearly on the outside of the package Onset is not responsible for any package that is returned without a valid RMA number or for the loss of the package by any shipping company Products must be clean and free of any toxins before they are sen...

Page 3: ...n no RH sensor is installed but RH is still active in software Turning RH off in software will maximize logger space Installing Batteries To begin operation of the HOBO LCD logger remove the battery door back of unit and insert the three AAA batteries Ensure the batteries are installed in the proper direction then replace the battery cover After installing the batteries the LCD will display all ch...

Page 4: ...gh or low limit the word Alert an alert symbol and the temperature or RH measurement that went out of limits will flash If an Alert Delay time has been set the words Alert Delayed will flash until the measurement value returns to within the acceptable range or until the programmed delay time has passed and the alert condition is activated See Delaying the Alert Conditions and Alert Behavior for mo...

Page 5: ... Wrap mode allows the logger to measure and record continuously overwriting the oldest points after memory becomes full If the Wrap Around When Full feature is not selected the MEM LEFT bar graph will decrease as the memory is filled When the memory has been completely filled the LCD will show FLL Full which means the logger has stopped and is no longer making measurements logging data or providin...

Page 6: ...t and stabilize the logger in the desired location see individual sensor response times beginning on page 13 Alternatively choose Hold for Later Launch to save logging parameters for a subsequent start with a Palm handheld or laptop Connecting a Remote Alarm or Autodialer optional The HOBO LCD logger is compatible with Onset s Remote Alarm part number ARA and Autodialer part number AVD 45 availabl...

Page 7: ...e data integrity use BoxCar Pro or HandCar software to off load the logger and turn it off before changing batteries The HOBO LCD logger requires three AAA batteries Onset Computer Corporation strongly recommends the use of fresh alkaline batteries When battery level is very low BATT LEVEL and the bar graph begin to flash indicating that the batteries should be replaced immediately to continue sys...

Page 8: ...y experience little or no accuracy drift unless the electronic components or temperature sensor are damaged mechanically or by exposure to environmental factors beyond the specifications such as high heat and humidity Relative Humidity Accuracy The relative humidity sensors used in the internal sensor model and the Temp RH external probe are temperature compensated The logger s relative humidity H...

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