Instruction Manual

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