Vaisala HMP155 User Manual
Page 4

USER'S GUIDE____________________________________________________________________
2 ________________________________________________________________ M210912EN-C
SEND [ADDR] ................................................................30
SDELAY .........................................................................30
SERI [BAUD][PARITY][DATA][STOP] ...........................31
#......................................................................................31
SMODE ..........................................................................32
INTV ...............................................................................32
Formatting Commands ........................................................33
FORM .............................................................................33
UNIT [M/N] .....................................................................35
TIME ...............................................................................35
Pressure Compensation Commands ..................................36
PRES and XPRES .........................................................36
System Commands .............................................................37
FILT [0.1…1] ..................................................................37
?......................................................................................38
HELP ..............................................................................39
ERRS..............................................................................40
VERS..............................................................................40
RESET............................................................................40
Analog Output Configuration Commands ...........................41
AMODE ..........................................................................41
ASEL ..............................................................................42
ATEST ............................................................................43
AERR..............................................................................43
ADDR .............................................................................44
OPEN .............................................................................44
CLOSE ...........................................................................44
Sensor Functions ...................................................................45
Chemical Purge (Optional) ..................................................45
Automatic Chemical Purge (Interval Purge)...................46
Chemical Purge in Power Up .........................................46
Manual Chemical Purge .................................................46
Starting and Configuring Chemical Purge ...........................47
PUR ................................................................................47
Sensor Heating....................................................................48
Setting Humidity Sensor Heating ...................................48
XHEAT............................................................................49
CHAPTER 5
MAINTENANCE............................................................................................51
Periodic Maintenance.............................................................51
Cleaning ..............................................................................51
Changing the Probe Filter ...................................................51
Changing the Sensor...........................................................52
Error States .............................................................................54
Technical Support ..................................................................55
Product Returns......................................................................55
CHAPTER 6
CALIBRATION AND ADJUSTMENT...........................................................57
Push-Button Calibration ........................................................59
Two-Point Humidity and Temperature Adjustment .............59
One-Point Humidity and Temperature Adjustment .............61
Passive Output Version Push-Button Calibration................62