Vaisala HMP230 User Manual
Page 4
HMP230 SERIES
User's Guide
M210225en-B
ii
6.3.7.2.
Setting the pressure for pressure compenstion of the HUMICAP
sensor
and for mixing ratio, wet bulb and enthalpy calculations ........................ 43
6.3.7.3.
Setting the date ........................................................................................ 44
6.3.7.4.
Setting the time ........................................................................................ 44
6.4.
Serial commands ................................................................................................... 46
6.4.1.
Analogue output commands ..................................................................... 46
6.4.1.1.
Setting the analogue outputs .................................................................... 46
6.4.1.2.
Selecting and scaling the analogue output quantities ................................ 47
6.4.1.3.
Scaling the analogue outputs.................................................................... 47
6.4.2.
Output via the serial bus ........................................................................... 48
6.4.2.1.
Starting the measurement output.............................................................. 48
6.4.2.2.
Stopping the measurement output ............................................................ 48
6.4.2.3.
Outputting the reading once...................................................................... 48
6.4.2.4.
Setting the output interval for the RUN mode ............................................ 49
6.4.2.5.
Serial bus settings .................................................................................... 49
6.4.2.6.
Selecting the output units ......................................................................... 50
6.4.2.7.
Setting the averaging time ........................................................................ 50
6.4.2.8.
Setting the transmitter address ................................................................. 50
6.4.2.9.
Setting the calculation mode..................................................................... 51
6.4.2.10. Resetting the transmitter .......................................................................... 51
6.4.3.
Operating the transmitter via the serial bus............................................... 51
6.4.3.1.
Setting the serial interface ........................................................................ 51
6.4.3.2.
OPEN & CLOSE ....................................................................................... 52
7.
CALIBRATION ................................................................................................................... 53
7.1.
Humidity calibration .............................................................................................. 53
7.1.1.
One point calibration procedure ................................................................ 54
7.1.1.1.
With serial commands .............................................................................. 54
7.1.1.2.
With display/keypad commands................................................................ 55
7.1.1.3.
With LED commands ................................................................................ 55
7.1.2.
Two point calibration procedure ................................................................ 55
7.1.2.1.
With serial commands .............................................................................. 56
7.1.2.2.
With display/keypad commands................................................................ 56
7.1.2.3.
With LED commands ................................................................................ 57
7.1.3.
Calibration procedure after sensor change ............................................... 57
7.1.3.1.
With serial commands .............................................................................. 57
7.1.3.2.
With display/keypad commands................................................................ 58
7.1.3.3.
With LED commands ................................................................................ 58
7.1.4.
Humidity calibration table.......................................................................... 59
7.2.
Temperature calibration ........................................................................................ 60
7.2.1.
One point offset correction ....................................................................... 60
7.2.1.1.
With serial commands .............................................................................. 60
7.2.1.2.
With display/keypad commands................................................................ 61
7.2.1.3.
With LED commands ................................................................................ 61
7.2.2.
Two point temperature calibration............................................................. 62
7.2.2.1.
With serial commands .............................................................................. 62
7.2.2.2.
With display/keypad commands................................................................ 62
7.2.2.3.
With LED commands ................................................................................ 63
7.3.
Calibration of the analogue outputs ..................................................................... 63
7.3.1.
With serial commands .............................................................................. 63
7.3.2.
With display/keypad commands................................................................ 64
7.3.3.
With LED commands ................................................................................ 64
8.
MAINTENANCE.................................................................................................................. 66
8.1.
Reference measurements ..................................................................................... 66
8.2.
Self-diagnostics..................................................................................................... 66
8.3.
Changing the HUMICAP® sensor and the filter ................................................... 67