Vaisala HMP260 - Manual (Page 47)

HMP260 SERIES
HMP260-U017en-1.5 Operating Manual
1997-11-25 41
• If you want to see how the sensor stabilizes to the humidity in the
calibrator, enter c instead of the first reference:
RH : 11.9 Ref1 ? c
RH : 11.5 Ref1 ? c
RH : 11.5 Ref1 ? 11.3
Press any key when ready...
• Place the sensor head into the calibration hole of the NaCl bottle in
the humidity calibrator.
• Wait for 10 minutes.
• Press any key and enter the second point value and press .
RH : xx.x Ref2 ? yy.y
• The stabilization of the sensor can be monitored by entering c
instead of the reference value.
6.1.2.2 Using display/keypad commands
Disconnect the security lock jumper!
• Leave the calibrator and the transmitter for at least 4 hours in the
same space so that their temperatures have time to equalize. Remove
the filter cap on the transmitter.
• Place the sensor head into the calibration hole of the LiCl bottle in the
humidity calibrator.
• Wait for 10 minutes.
• Select Cali in the main menu and then RH cal; select Not changed
and then two-point calibration RH 2 point cal. Change the first point
reading with the arrow keys and press ENT.
• Place the sensor head into the calibration hole of the NaCl bottle in
the humidity calibrator.
• Wait for 10 minutes.
• If necessary, change the second point reading with the arrow keys and
press ENT.
6.1.2.3 Using LED commands
Disconnect the security lock jumper!
• Leave the calibrator and the transmitter for at least 4 hours in the
same space so that their temperatures have time to equalize. Remove
the filter cap on the transmitter.
• Place the sensor head into the calibration hole of the LiCl bottle in the
humidity calibrator.