Vaisala HMP243 Betriebsanweisung PDF herunterladen (Seite 5)

HMP240 series

M210300en User's guide

iii

7.5.2 With LED commands ......................................................................60

7.6 Measurement of output currents using test points....................................60

7.7 Adjusting the contrast of the display..........................................................61

8. TECHNICAL DATA ...................................................................................................62

8.1 Dewpoint temperature .................................................................................62

8.2 Temperature (with additional T sensor head).............................................63

8.3 Calculated variables ....................................................................................63

8.3.1 Relative humidity (with additional T sensor head)............................63

8.3.2 Accuracy of other calculated variables ............................................64

8.4 Outputs.........................................................................................................65

8.5 Electronics ...................................................................................................65

8.6 Mechanics ....................................................................................................66

8.7 Electromagnetic compatibility.....................................................................67

SPARE PARTS AND ACCESSORIES...............................................................................68

APPENDIX 1: SERIAL COMMANDS ................................................................................69

APPENDIX 2: INSTALLING AND USING THE RS 485/422 SERIAL PORT MODULE ......91

APPENDIX 3: INSTALLING AND USING THE DIGITAL CURRENT LOOP MODULE ....102

APPENDIX 4: ERROR MESSAGES................................................................................110

APPENDIX 5: CALCULATION FORMULAS ...................................................................116

APPENDIX 6: HMP240 WIRING DIAGRAM ....................................................................118

APPENDIX 7: RE-GAINING............................................................................................119

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Vaisala HMP243 Betriebsanweisung Seite 5