Frequently Asked Questions:
Check-Set Calibrator Data Loggers

The Data Logger model automates the record-keeping process. It logs the calibration data and generates traceable, tamper-proof reports, eliminating manual paperwork errors and providing cost-effective, reliable data logging necessary for meeting compliance regulations.

The time to temperature varies depending on the environment.

• For 40/160°F (4.4/71.1°C), leave at least 10 minutes for the device to reach temperature
• For 32°/212°F (0°/100°C), leave at least 15 minutes for the device to reach temperature
• If it takes longer than 15 minutes, the environment or air flow may not be adequate for the device.
  Make sure the device is in a room that is between 65°F (18.3°C) to 75°F (23.9°C).
• If the Check-Set Data Logger finds an internal error or takes too long to get to temperature, an error screen will be shown

• When getting to temperature, a progress bar will be displayed
• When the Check-Set Data Logger is at temperature, the bottom of the screen will turn green

Currently, the Check-Set Data Logger is only available in English.

The Check-Set Data Logger can remain on for extended periods of time. In order to save power without completely shutting down the unit, the Check-Set Data Logger can be put to sleep.

Many devices are compatible with the Check-Set Data Logger, but not all may behave as expected.

We are working on expanding what devices work but currently:

1. Keyboard and Mouse
2. 2D Code Reader
3. USB Flash Drives

Additional Accessories are available for maintenance or for improved performance:

1. Calibration Wrench
2. Check-Set Shoulder Strap
3. Brush Kit
4. Additional Wells

• All stems must have a minimum length of 3.5”. This ensures the thermometer is being properly controlled.
• The default core that comes with Check-Set Calibrators has holes for thermometers with stems
  of a diameter of ¼”, .150” and .187”. For different diameter stems, check additional cores available for purchase at teltru.com
• Additional cores available for purchase online at Tel-Tru.com include:
  – 1-hole ¾” Well
  – 1-hole ½” Well
  – 1-hole 3/8” Well
  – 3-hole 3/16”, ¼”, 3/8” Well
  – 3-hole 3/16, ¼, 3/8, Well with Calibrator

In the event of a malfunction or breakdown, grounding provides a path of least resistance for the electric current (to reduce the risk of electrical shock). The device is equipped with an electric cord having an equipment-grounding conductor and a grounding plug. The plug must be plugged into a matching outlet that is properly installed and grounded in accordance with all local codes and ordinances.

Do not modify the plug provided. If it will not fit the outlet, have the proper outlet installed by a qualified electrician.

Improper connection of the equipment-grounding conductor can result in a risk of electric shock. The conductor with the insulation having an outer surface that is green with or without yellow stripes is the equipment-grounding conductor. If repair or replacement of the electric cord or plug is necessary, do not connect the equipment-grounding conductor to a live terminal.

Check with a qualified electrician or serviceman if the grounding instructions are not completely understood, or if in doubt as to whether the device is properly grounded.

Use only 3-wire extension cords that have 3-prong grounding plugs and 3-pole receptacle that accept the device’s plug. Repair or replace damaged or worn cord immediately.

Tel-Tru warrants each product to be free from defects in material and workmanship under normal use and service for one year from date of manufacture. Please see our full product warranty at Section 8, Warranty, of our Terms and Conditions policy.

Please keep the original carton and packing materials for re-certification service returns. Carefully pack your calibrator when shipping it back for re-certification service.

Traceable calibration is essential to prove that your process temperatures—like pasteurization or cooking—meet regulatory requirements (e.g., FSMA). The Tel-Tru Check-Set Calibrator Data Logger provides a traceable, digital record of verification, offering the data integrity required to maintain compliance and avoid costly product loss.

There is no maximum for the number of employees and probes that can be added to the Check-Set Data Logger.

10GB of storage dedicated to record keeping & it can hold 10 million records.

1GB limit to both amount of employees and devices, approximately 1 million records.

There is a 255 character limit for Employee names and device names/ID numbers. It is recommended that you have 9 characters or less due to the size of the text box on the screen. However, all characters will be shown in the data export.

Currently, USB is the only way to transfer data off the unit.

Data is stored on an internal SD card. If the device is damaged there is a good possibility we can restore the data depending on the severity.

• The device could be in sleep mode. Try the following:

1. Touch any part of the screen
2. Connect a keyboard and press the space bar

• If the device does not turn on, do the following:

1. Turn off the Check-Set Data Logger with the switch in the back
2. Unplug the Power Cable
3. Wait 10 seconds
4. Plug the Power Cable into the Check-Set Data Logger
5. Turn the Check-Set Data Logger on with the switch in the back

Register your Check-Set online: https://www.teltru.com/checksetwarranty

Tel-Tru offers annual maintenance, inspection, cleaning, and accuracy recertification of each Check-Set thermometer calibrator. If your company has net terms with Tel-Tru, you can email customerservice@teltru.com with you SN#, PO# to use for this service. We will process the RMA and send you those instructions with order verification.

If you are prepaying via charge card, you can order here https://www.teltru.com/product/re-certification-for-check-set/ for a discounted rate. You will receive an Order ID # on your receipt that will be your RMA# to ship the unit back to Tel Tru for the recert process: 

Only insert clean thermometers into the Tel-Tru Thermometer Calibrator opening.

• Wipe the stem of the thermometer before inserting it into the calibrator.
• Wipe the stem again before inserting the thermometer into any food product.

If it becomes necessary to clean foreign matter from inside the opening in the Tel-Tru Thermometer Calibrator, you may use cleaning brush(es) which are available to purchase on the Accessories page.

• Turn the unit off and allow it to cool to room temperature before proceeding.
• Insert the brush to full depth and rotate the brush as you remove it.
• Repeat this process several times until no matter is observed on the brush.
• You may dampen the brush slightly with a sanitizing fluid if you wish, but do not use more than enough to dampen the brush.

Clean the external surfaces of the calibrator with a damp cloth and mild detergent.

For warranty information concerning a product purchased from Tel-Tru, please refer to Section 12, Warranty, of our Terms and Conditions policy.

If you are ordering the recertification service go to the instructions here https://www.teltru.com/product/re-certification-for-check-set/

Carefully pack up the unit(s) using these instructions: https://www.teltru.com/wp-content/uploads/Check-Set-Return-Instr-12.24.pdf noting the CR# on the outside of the box, in the format “Order XXXX”.  Ship the box to the factory at the address listed below.

Ship To:
Tel-Tru Manufacturing
ATTN: Order #___________
10 Ward Street (Dock)
Rochester, NY 14605

Only domestic Continental United States orders are accepted and processed online via Tel-Tru”s online shopping cart.  We are unable to ship online orders to PO Boxes, APO/FPO, Alaska (AK), Hawaii (HI), Puerto Rico (PW), or international addresses. ONLINE NON-CONTINENTAL UNITED STATES CUSTOMERS — please consult factory at 585.308.9904 or contact us via the web. Prices, shipping charges, delivery, and availability are subject to change.

There is a user manual supplied with the calibrator and in the literature section of this website.

Please email customerservice@teltru.com with your 4 or 5 digit serial # and we can send you the PDF copy of your certificate of calibration

If your screen is unresponsive, you should try the following:

• Wait 1 minute, the Check-Set Data Logger can be completing work in the background
• Turn the device off and on again (never turn the unit off if you are in the process of exporting data to a USB Flash Drive, it may damage the drive).

• Registering your Check-Set: https://www.teltru.com/checksetwarranty
• Ensures warranty coverage for one year from date of manufacture.
• Will allow you to receive technical support, warranty repair service, maintenance, and important product updates.
• Allows you to receive valuable information on how to have your Check-Set recalibrated every.
• Offers suggestions on how to keep your Check-Set running trouble free for years to come.

No, currently the Check-Set Data Logger does not have the capability to print your Calibration Certificate.

No, currently the Check-Set Data Logger cannot connect to another computer.

• Yes, your RTD must have a probe sensing area of at least 3.5” from face
• The accuracy of the Check-Set is +/- 0.2°F (0.1°C)

• All records can be viewed in the Check-Set Calibrator. See User Manual on how to view records
• SD cards can be used with an SD card USB adapter

• Yes, you can use your own Keyboard and mouse, bar code reader or other data input device.
• Currently, we only support standard American keyboard layout. Other keyboard layouts may not behave as expected
• The accessories available on teltru.com have been vetted to work with the Check-Set Data Logger

Connect any device to the Check-Set Data Logger by plugging into the available USB ports in the front of the panel.

Currently, the Check-Set Data Logger does not support Bluetooth connectivity.

No, you cannot due to the preservation of the audit trail.