C12 Legionella Kit

How Do I Re-Calibrate My Thermometer?

The calibration of the C12 HACCP Food Thermometer calibration is set during the manufacture of the product for its lifetime. It should not need to be changed or re-calibrated at any stage.

If you are experiencing issues with temperature readings, it may be that your probe has, or is  developing a fault, in which case we would always advocate trying a different probe if you have one, or ordering a replacement to try.

Is my Thermometer/Probe NTC Type?

The C12 HACCP Food Thermometer does use Probes with Negative Temperature Coefficient (NTC) Thermistors, however there are many different types of NTC Thermistors available, with different specifications, which may not give accurate results if used with the C12.

We would recommend only using Probes we supply with and for the C12 HACCP Food Thermometer to be sure that the stated instrument accuracy is obtained.

A full list of compatible probes can be found here – Probes for C12 HACCP Food Thermometer

How old is my Comark Product and is it still in Warranty?

The serial number on most Comark Products is usually the date of manufacture followed by a unique product number.

For example, 02121234 is (02) for February, (12) for year 2012, and (1234) is the number of the individual product.

This works for all C series Thermometers, Evt2 and N2000 Data Loggers, RF51X Transmitters, KM2xx, PxxxFW, BTxxx etc.

Warranty on most Comark Thermometers is 1 year. However, in reality Comark will give a little over the relevant warranty period to allow for distributor stock.

My device has corrosion in the battery compartment

This may cause your device to cease functioning, or become dangerous. In all cases, please return your instrument to Comark for servicing.

Ideally, prevention is better than cure for this problem. Check your batteries regularly to ensure they have not leaked, and if you are planning to store the instrument without use for a prolonged period, please consider removing the batteries and storing them separately.

General Care of Temperature Probes

The Probe is where most of the action with any Thermometer takes place. Almost every operation requires a Probe reading.  The Probe should be treated with care in order to ensure best functioning and long life.

We would recommend that you always have a spare, properly functioning Probe on hand, just in case the primary Probe breaks, or appears to be reading incorrectly.

You should not stretch the coiled cable of any Probe, to reach an item to be measured. We would recommend instead that you ALWAYS move BOTH the Probe and the Thermometer, toward the food to be measured. This will help avoid unnecessary stress on the wires inside the Probe.

You should not touch the coiled cable or Probe handle to hot surfaces, that might melt the protective coatings, which in turn could damage the Probe wires and render the Probe inoperable.

You should not bend the tip of any Penetration Probe, as this too could break the wires and render the Probe inoperable. In general, Penetration Probes are designed for penetrating thawed food only and not for testing frozen food or containers or chipping ice.

You should clean the Probe and wire coil with a clean damp cloth, being VERY careful not to pull or stretch the coil and damage the wires inside.