LiCl-NaCl adjustment of HMT120/HMT130 - HMT130 - HMT120 - HM70

HM70 User Guide

Document code
M210297EN
Revision
G
Language
English (United States)
Product
HM70
Document type
User guide
This procedure is 1 of the alternative methods for completing the adjustment described in Calibrating and adjusting HMT120 and HMT130 series transmitters.

This adjustment is done using relative humidity references 11.3 %RH (LiCl) and 75.5 %RH (NaCl).

To complete the adjustment:
  1. Remove the filter from the transmitter's probe and insert the probe into the LiCl salt chamber.
  2. Press Adjust to continue adjusting.
  3. Choose LiCl-NaCl autom. from the MI70 adjustment menu and press Select. Press OK to accept the note about references.
  4. Press Ready when the reading has stabilized in the LiCl salt chamber (note that the stabilization may require over 30 minutes). You can follow the stabilization from the graphical display by pressing Graph.
  5. Remove the probe from the LiCl salt chamber and insert the probe into the NaCl salt chamber.
  6. Press Ready when the reading has stabilized in the NaCl salt chamber (note that the stabilization may require over 30 minutes). You can follow the stabilization from the graphical display by pressing Graph.
  7. Confirm the adjustment by pressing Yes. If you press No, you return to the adjustment mode display and no changes are made.
  8. The adjustment is done. Press Back and Exit to return to the basic display.
  9. Switch off MI70 and detach the connection cable.