Vaisala HMP228 User Manual
Page 4
HMP228
Operating Manual
M210282en-A
iv
4.6.1.2
Using display/keypad commands .............................................................. 28
4.6.1.3
Using LED commands .............................................................................. 28
4.6.2
Two point temperature calibration............................................................. 28
4.6.2.1
Using serial commands ............................................................................ 28
4.6.2.2
Using display/keypad commands .............................................................. 29
4.6.2.3
Using LED commands .............................................................................. 29
4.6.3
Temperature channel adjustment with Pt 100 simulators .......................... 30
4.7
Analogue output channels .................................................................................... 31
4.7.1
Setting the analogue outputs .................................................................... 31
4.7.1.1
Using serial output.................................................................................... 32
4.7.1.2
Using display/keypad commands .............................................................. 33
4.7.2
Selecting and scaling the analogue output quantities ................................ 34
4.7.2.1
Using serial output.................................................................................... 34
4.7.2.2
Using display/keypad commands .............................................................. 34
4.8
Checking and calibrating the analogue outputs .................................................. 35
4.8.1
Measurement of output currents using test points ..................................... 35
4.8.1
Calibration of the analogue outputs .......................................................... 36
4.8.1.1
Using serial commands ............................................................................ 37
4.8.1.2
Using display/keypad commands .............................................................. 37
4.8.1.3
Using LED commands .............................................................................. 38
4.9
Other functions...................................................................................................... 38
4.9.1 Adjusting the contrast of the display......................................................... 38
4.9.2
Reverting to factory settings of the serial port .......................................... 38
5.
TECHNICAL DATA............................................................................................................. 40
5.1
Water activity ......................................................................................................... 40
5.2
Temperature........................................................................................................... 40
5.4
Analogue outputs .................................................................................................. 40
5.5
Electronics ............................................................................................................. 41
5.6
Mechanics .............................................................................................................. 41
5.7
Electromagnetic compatibility .............................................................................. 43
5.7.1
Emissions................................................................................................ 43
5.7.2
Immunity ................................................................................................. 43
6.
OPTIONS ........................................................................................................................... 44
7.
SPARE PARTS................................................................................................................... 44
APPENDIX 1: SERIAL COMMANDS .......................................................................................... 45
APPENDIX 2: DISPLAY COMMANDS........................................................................................ 66
APPENDIX 3: POWER SUPPLY MODULE ................................................................................ 73
APPENDIX 4: INSTALLING AND USING THE RS 485/422 SERIAL PORT MODULE ................ 77
APPENDIX 5: INSTALLING AND USING THE DIGITAL CURRENT LOOP MODULE ................ 88
APPENDIX 6: ERROR MESSAGES ........................................................................................... 98
APPENDIX 8: CONNECTORS.................................................................................................. 105
APPENDIX 9: WIRING
109