Vaisala HMP260 - Manual (Page 49)

HMP260 SERIES
HMP260-U017en-1.5 Operating Manual
1997-11-25 43
• Press any key and enter the second point value and press <cr>.
RH : xx.x Ref2 ? yy.y <cr>
• The stabilization of the sensor can be monitored by entering c <cr>
instead of the reference value.
6.1.3.2 Using display 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 Sensor
changed. 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.
6.1.3.3 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.
• Wait for 10 minutes.
• Connect an ammeter/voltmeter to the analogue outputs (connector
X2). Give command
l¡¡¡. At the first calibration point the LED
on the left flashes; adjust the first point with the arrow switches to the
value given in the calibration table (Chapter 6.1.4) and press ENT
switch.
• Place the sensor head into the calibration hole of the NaCl bottle in
the humidity calibrator.
• Wait for 10 minutes.