Mettler Toledo HB43-S Membrane Keypad HMI Repair Part

To obtain optimal results, when you install the HB43-S Operator Keyboard Moisture Analyzer at the place where it will be used, you should use the METTLER TOLEDO adjustment set to adjust the heating module under the prevailing operating conditions (e.g. in a fume cupboard). This ensures that any differences from the factory adjustment that may result from the specific local conditions are corrected.

You should adjust your Moisture Analyzer regularly (e.g. every six months) at the place where it is used and under the prevailing operating conditions. This may also be stipulated by your quality assurance system (e.g. GLP, GMP, ISO 9001).

By adjusting the heating module you can ensure comparability with results from other instruments of the same design.

This is done by using an appropriate thermometer, which is provided in the form of a temperature adjustment set with calibration certificate. This adjustment set comprises a black plate with a thermometer, which allows a reproducible adjustment of the heating module.

The balance and the integral heating module in your instrument can be adjusted using the appropriate accessories.

A HB43-S Membrane Keypad Moisture Analyzer is typically used in place of or in addition to the oven method. In an oven heat energy is transferred by the flow of air, which establishes an equilibrium between the sample temperature and the ambient temperature. This is not the case in a HB43-S Switch Membrane Moisture Analyzer. The actual sample temperature primarily depends on the specific absorption properties of the sample ("dark" samples absorb more heat), which can change during the measurement process.

There can also be differences between the temperature at the surface of the sample and the temperature inside the sample. The heat output is therefore not dependent on the true sample temperature but instead is regulated by a temperature sensor underneath the halogen heating module.

For the reasons explained above, the temperature setting on the instrument will therefore deviate from the true sample temperature. By regularly adjusting the heating module, you will ensure a consistent and reproducible heat output for the entire lifetime of your instrument.

Note: METTLER TOLEDO offers an adjustment service – please contact your local dealer.

If you replace the heating module, you must adjust it using the temperature adjustment set, which is available as an accessory.