Vaisala HMP155 - Manual (Page 6)

USER'S GUIDE____________________________________________________________________
4 ________________________________________________________________ M210912EN-C
List of Figures
Figure 1 HMP155 Probe .........................................................................13
Figure 2 HMP155 with Additional T-probe..............................................14
Figure 3 HMP155 with Optional Connection Cover................................15
Figure 4 HMP155 with T-probe Installed in DTR13................................17
Figure 5 HMP155 Installed in DTR503 ...................................................18
Figure 6 HMP155 with T-Probe Installed in Stevenson Screen .............19
Figure 7 Wiring of HMP155 8-Pin Connector .........................................20
Figure 8 HMP155D Block Diagram and Wiring ......................................21
Figure 9 HMP155A/E Block Diagram and Wiring ...................................21
Figure 10 PuTTY Terminal Application.....................................................27
Figure 11 Decrease of Sensor Gain .........................................................46
Figure 12 Changing the HUMICAP
®
180/180R Sensors ...........................53
Figure 13 HMP155 Adjustment Buttons ...................................................58
Figure 14 Accuracy over Temperature Range: Voltage and RS-485.......72
Figure 15 Accuracy of Dew point Measurement.......................................75
Figure 16 Probe Dimensions ....................................................................78
Figure 17 Additional Temperature Probe Dimensions..............................78
List of Tables
Table 1 Manual Revisions .......................................................................6
Table 2 Related Manuals.........................................................................6
Table 3 Quantities Measured by HMP155.............................................11
Table 4 Quantities Calculated by HMP155............................................12
Table 5 Default Serial Communication Settings ....................................24
Table 6 Measurement Commands ........................................................28
Table 7 Formatting Commands .............................................................28
Table 8 Chemical Purge Commands (Optional)....................................28
Table 9 Calibration and Adjustment Commands...................................29
Table 10 Setting and Testing the Analog Outputs...................................29
Table 11 Other Commands .....................................................................29
Table 12 Selection of Output Modes .......................................................32
Table 13 FORM Command Modifiers......................................................33
Table 14 Symbols Used in FORM Checksum Equations........................34
Table 15 Error Messages ........................................................................54
Table 16 Relative Humidity Performance ................................................71
Table 17 Temperature Performance .......................................................72
Table 18 Operating Environment.............................................................73
Table 19 Calculated Variables.................................................................74
Table 20 Outputs .....................................................................................75
Table 21 Average current consumption (+15 VDC, load 100 kOhm).....76
Table 22 Operating Voltage and Settling Time .......................................76
Table 23 Mechanical Specifications ........................................................76
Table 24 Options and Accessories..........................................................77