DT1 Digital Thermometer Manual Ver B Rev I Nov 2019

Document History Revision I

Date

CO

Supersession

Revision Description

25 NOV 2019*

15151

Supersedes A, 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.

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 Scientific. Helmer Scientific 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 Scientific considers only the most recent revision of this document to be valid.

Notices and Disclaimers Confidential / 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 Scientific 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 Scientific 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 Scientific 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 Scientific 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 Scientific 14400 Bergen Boulevard Noblesville, IN 46060 USA www.helmerinc.com Part No. 360012-1/I

Helmer Scientific Digital Thermometer

Operation Manual

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

4

3.1

Using the Digital Thermometer... 4

3.2

Calibration... 4

3.3

Removing the Digital Thermometer... 4

Maintenance... 5 4.1

Cleaning the Digital Thermometer... 5

5

Troubleshooting... 5

6

Product Specifications... 5

7

References and Compliance... 6

8

7.1

Safety Compliance... 6

7.2

Environmental Compliance... 6

Warranty... 7

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About this Manual

1.1

Intended Use

Operation Manual

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 Scientific products.

1.3

General Recommendations

Recording Identification Information 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 efficient service. A B

REF SN

Model: DT1 S/N: ______________

DT 1 000000 Noblesville, IN USA

Digital Thermometer

2009

www.helmerinc.com

Product Specification label (sample) Label

Description

A

Model

B

Serial number (S/N)

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Operation Manual

Installation Note In order for the hook and loop fastener to adhere, do not use a cleaner that will leave a slippery film on the surface.

1 2 3

Install digital thermometer 1. Clean the top section of your Helmer thawer using a cleaner suitable for stainless steel. 2. Peel the liner off 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 first 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 identified 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 difference is greater than the acceptable tolerance for your organization, calibrate the digital thermometer. Calibrate digital thermometer 1 1. Using a flat-head screwdriver pry the back cover of the digital thermometer off the back plate off the housing. 2. Using a flat-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 effect. 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

2

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.

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Maintenance

4.1

Cleaning the Digital Thermometer

Operation Manual

Notes • Follow all chemical handling and disposal requirements and procedures specified by your organization. • Use specific cleansers and cleaning supplies specified 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

6

Troubleshooting Problem

Possible Cause

Action

The temperature is not displaying.

There is not enough light in the work area to power the digital thermometer.

Confirm 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.

Product Specifications

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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References and Compliance

7.1

Safety Compliance

Operation Manual

This device complies with the requirements of the RoHS Directive 2002/95/CE. This product is certified 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 affected 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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Operation Manual

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

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Operation Manual

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Helmer Scientific

14400 Bergen Boulevard, Noblesville, IN 46060 USA Copyright © 2019 Helmer, Inc.

360012-1/I