time to time we get information from end-users of JOFRA dry-block
calibrators that something is wrong with the calibrator, as it is
not able to meet the temperature specifications. This is often due
to the fact that the customer is using a wrong insertion tube, although
he is in good faith. Therefore, you can save a lot of time and irritations
by using the right insertion tube.
things to REMEMBER when using inserts:
- Remove inserts from the well with the insert removal tool.
- Remove the inserts after calibration, as it might cause problems
to remove them later on if they stay in the well for longer periods.
- Take care when removing very hot or cold inserts and use adequate
protective equipment if necessary.
- Make certain that the sensors and inserts are free from any particles
of dirt before inserting them into the well. Inserts are designed
to fit perfectly into the well thus maximizing the thermal conductivity.
If not the insert may be jammed.
- Remove regularly build-up of dirt and dust from inserts and wells
with a cloth or detergent.
things to AVOID when using inserts:
- Do not force inserts or sensors into the well.
- Do not drop any foreign materials into the well.
- Do not use oil or other liquids to optimise the thermal conductivity
due to risk of leakage, which will destroy the other components.
- Do not use inserts of metals dissimilar to that of the block, unless
specified by the manufacturer as this may cause a different degree
of expansion and contraction.