Helmer DT1 User manual
Digital Thermometer Manual
DT1 Version B
360012-1/I
Document Updates
The document is furnished for information use only, is subject to change without notice and should not be construed s a commitment
by Helmer Scientic. Helmer Scientic assumes no responsibility or liability for any errors or inaccuracies that may appear in the
informational content contained in this material. For the purpose of clarity, Helmer Scientic considers only the most recent revision of
this document to be valid.
Notices and Disclaimers
Condential / Proprietary Notices
Use of any portion(s) of this document to copy, translate, disassemble or decompile, or create or attempt to create by reverse
engineering or otherwise replicate the information from Helmer Scientic products is expressly prohibited.
Copyright and Trademark
Helmer® is a registered trademark of Helmer, Inc. in the United States of America. Copyright © 2019 Helmer, Inc. All other trademarks
and registered trademarks are the property of their respective owners.
Helmer, Inc., doing business as (DBA) Helmer Scientic and Helmer.
Disclaimer
This manual is intended as a guide to provide the operator with necessary instructions on the proper use and maintenance of certain
Helmer Scientic products.
Any failure to follow the instructions as described could result in impaired product function, injury to the operator or others, or void
applicable product warranties. Helmer Scientic accepts no responsibility for liability resulting from improper use or maintenance of its
products.
The component images appearing in this guide are provided for illustrative purposes only, and may vary slightly from the actual
software screens and/or product components.
Helmer Scientic
14400 Bergen Boulevard
Noblesville, IN 46060 USA
www.helmerinc.com
Part No. 360012-1/I
Document History
Revision Date CO Supersession Revision Description
I 25 NOV 2019* 15151 SupersedesA, B, C,
D, E, F, G, H Revised layout for consistency with Helmer manuals.
* Date submitted for Change Order review. Actual release date may vary.
Helmer Scientic Digital Thermometer Operation Manual
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Contents
1 About this Manual................................................................................................ 3
1.1 Intended Use...............................................................................................3
1.2 Symbols Found in this Document ...............................................................................3
1.3 General Recommendations ...................................................................................3
2 Installation ...................................................................................................... 4
3 General Operation................................................................................................ 4
3.1 Using the Digital Thermometer .................................................................................4
3.2 Calibration................................................................................................. 4
3.3 Removing the Digital Thermometer..............................................................................4
4 Maintenance..................................................................................................... 5
4.1 Cleaning the Digital Thermometer...............................................................................5
5 Troubleshooting ................................................................................................. 5
6 ProductSpecications ............................................................................................ 5
7 References and Compliance ....................................................................................... 6
7.1 Safety Compliance ..........................................................................................6
7.2 Environmental Compliance.................................................................................... 6
8 Warranty........................................................................................................ 7
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1 About this Manual
1.1 Intended Use
The Helmer DT1 solar-powered digital thermometer has been designed for use with the Helmer QuickThaw™ Plasma
Thawing System.
1.2 Symbols Found in this Document
The following symbols are used in this manual to emphasize certain details for the user:
Task Indicates procedures which need to be followed.
Note Provides useful information regarding a procedure or operating technique when using Helmer
Scientic products.
1.3 General Recommendations
RecordingIdenticationInformation
For easy reference, write the model and serial number in the space provided on the front of this manual. Both the model and serial
numbers are needed to provide ecient service.
DT 1
000000
Digital Thermometer
Noblesville, IN USA
www.helmerinc.com
REF
SN
2009
A
B
Product Specication label (sample)
Label Description
A Model
B Serial number (S/N)
Model: DT1
S/N: ______________
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2 Installation
Note
In order for the hook and loop fastener to adhere, do not use a cleaner that will leave a slippery lm on the surface.
Install digital thermometer
1. Clean the top section of your Helmer thawer using a cleaner suitable for stainless steel.
2. Peel the liner o the hook and loop fastener to expose the adhesive.
3. Carefully insert the probe of the digital thermometer through the holes in the brackets in the thawer. Align the digital
thermometer as desired, then press it onto the surface of the thawer to adhere it in place.
3 General Operation
3.1 Using the Digital Thermometer
The stainless steel probe on the DT1 immerses in the water in the chamber, and the display shows the temperature in increments
of 0.1 °C. For the display to work, there must be enough light in the work area (at least 35 Lux).
When the digital thermometer is rst exposed to light, the message “---oE” is displayed for about 12 to 15 seconds while the
thermometer initializes.
3.2 Calibration
Refer to the policy for your organization to determine how much variance is acceptable. If the variance is within acceptable limits
for your organization, you may not need to change the setting.
You must have a thermometer to complete this procedure. The thermometer must be independent of the digital thermometer,
and be calibrated and traceable according to the policy of the National Institute of Standards and Technology (NIST), or to the
equivalent national or international measuring equipment standards as identied in regulations for your organization.
Measure water temperature
1. Place the independent thermometer in the water chamber so the tips of both thermometers are at the same depth.
2. Allow the temperature readings to stabilize.
3. Compare the reading of the digital thermometer to that of the independent thermometer. If the dierence is greater than
the acceptable tolerance for your organization, calibrate the digital thermometer.
Calibrate digital thermometer
1. Using a at-head screwdriver pry the back cover of the digital thermometer o the back plate o
the housing.
2. Using a at-head screwdriver, slightly turn the calibration adjustment dial accordingly to change
the readout value.
3. Allow the temperature readings to stabilize for 15 to 30 seconds. This will also allow the calibration
changes to take eect.
4. Repeat steps 2 and 3 as necessary until the readout is acceptable.
5. Install the back cover by aligning the mounting buttons with the holes on the housing, then pressing
the buttons into the holes.
3.3 Removing the Digital Thermometer
To remove the digital thermometer, carefully lift up on the housing to separate the hook and loop fastener, and pull upwards.
12
3
1
2
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4 Maintenance
4.1 Cleaning the Digital Thermometer
Notes
• Follow all chemical handling and disposal requirements and procedures specied by your organization.
• Use specic cleansers and cleaning supplies specied by your organization.
Clean and disinfect the digital thermometer regularly as necessary.
Clean the housing with a soft cloth and a non-abrasive liquid cleaner. Clean the stainless steel probe with a general-purpose
laboratory cleaner suitable for stainless steel. Disinfect using a mild disinfectant solution.
5 Troubleshooting
Problem Possible Cause Action
The temperature
is not displaying. There is not enough
light in the work area
to power the digital
thermometer.
Conrm that the light
level in the room is at
least 35 lux. Increase the
light if necessary.
The temperature
does not seem
accurate.
The digital
thermometer is not
calibrated.
Verify the temperature
with an independent
thermometer and
calibrate the digital
thermometer if
necessary.
6 ProductSpecications
Power
Solar (minimum illuminance of 35 lux)
Weight
2.2 lb (1 kg)
Size
Width: 3.25 in (8 cm)
Height: 12.25 in (31 cm)
Depth: 4 in (10 cm)
Operating conditions
Ambient temperature range: 5 °C to 35 °C
Temperature detection range: -50 °C to 70 °C
Accuracy: ± 1 °C
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7 References and Compliance
7.1 Safety Compliance
This device complies with the requirements of the RoHS Directive 2002/95/CE.
This product is certied to applicable UL and CSA standards by a NRTL.
7.2 Environmental Compliance
This device falls under the scope of Directive 2102/19/EU Waste Electrical and Electronic Equipment (WEEE) .
When disposing of this product in countries aected by this directive:
♦Do not dispose of this product as unsorted municipal waste.
♦Collect this product separately.
♦Use the collection and return systems available locally.
For more information on the return, recovery, or recycling of this product, contact your local distributor.
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8 Warranty
USA and Canada: The Helmer DT1 is warranted for one (1) year for materials and labor at our factory. Contact Helmer for details.
Outside of USA and Canada: Contact your local distributor for warranty information.
END OF MANUAL
Helmer Scientic Digital Thermometer Operation Manual
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Helmer Scientic
14400 Bergen Boulevard, Noblesville, IN 46060 USA
Copyright © 2019 Helmer, Inc. 360012-1/I
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