Vaisala HMT330 - Manual (Page 10)

User's Guide _______________________________________________________________________
8 ____________________________________________________________________ M210566EN-K
List of Figures
Figure 1 Transmitter Body ...................................................................... 21
Figure 2 Inside the Transmitter ............................................................... 22
Figure 3 HMT331 Fixed Probe ............................................................... 23
Figure 4 HMT331 Short Cable Probe ..................................................... 23
Figure 5 Probe Options ........................................................................... 24
Figure 6 Standard Mounting ................................................................... 27
Figure 7 Mounting with Wall Mounting Kit .............................................. 28
Figure 8 Dimensions of the Plastic Mounting Plate (mm/inch) ............... 28
Figure 9 Dimensions of the Probe Holder Plate (mm/inch) .................... 29
Figure 10 Mounting with the DIN Rail Installation Kit ............................... 30
Figure 11 Vertical Pole .............................................................................. 30
Figure 12 Horizontal Pole ......................................................................... 31
Figure 13 Mounting with Metal Wall Mounting Plate ................................ 31
Figure 14 Dimensions of the Metal Mounting Plate (mm/inch) ................. 32
Figure 15 Mounting the Rain Shield with the Installation Kit .................... 32
Figure 16 Panel Mounting Frame ............................................................. 33
Figure 17 Panel Mounting Dimensions (mm/inch) .................................... 34
Figure 18 Cable Bushings......................................................................... 34
Figure 19 Grounding the Screen of Electrical Cable ................................ 35
Figure 20 Screw Terminal Block on Motherboard .................................... 37
Figure 21 Connections to 24 VAC Power Supply ..................................... 39
Figure 22 Measurement Error at 100 %RH .............................................. 40
Figure 23 Horizontal Mounting of Probe ................................................... 41
Figure 24 Vertical Mounting of Probe ....................................................... 42
Figure 25 HMT344 Probe ......................................................................... 44
Figure 26 Tightening the Nut .................................................................... 44
Figure 27 Cleaning of Tightening Cone .................................................... 45
Figure 28 HMT338 Probe ......................................................................... 47
Figure 29 Sealing of Fitting Body into Process ......................................... 47
Figure 30 Tightening the Clasp Nut .......................................................... 48
Figure 31 Power Supply Module ............................................................... 49
Figure 32 Galvanic Isolation Module ........................................................ 54
Figure 33 Third Analog Output ................................................................. 54
Figure 34 Third Analog Output Selection .................................................. 55
Figure 35 Relay Module ............................................................................ 57
Figure 36 RS-422/485 Module .................................................................. 58
Figure 37 4-Wire RS-485 Bus ................................................................... 60
Figure 38 2-Wire RS-485 Bus ................................................................... 61
Figure 39 LAN Interface Module ............................................................... 62
Figure 40 WLAN Interface Module ........................................................... 63
Figure 41 Data Logger Module ................................................................. 65
Figure 42 Pinout of the Optional 8-Pin Connector .................................... 66
Figure 43 Basic Display ............................................................................ 67
Figure 44 Graphical Display...................................................................... 68
Figure 45 Graphical Display with Data Logger ......................................... 69
Figure 46 Main Menus .............................................................................. 70
Figure 47 Alarm Limits Shown on Graph Screen ..................................... 75
Figure 48 Display Alarm Active ................................................................. 75
Figure 49 Display Alarms .......................................................................... 76
Figure 50 Modifying an Alarm Limit .......................................................... 76
Figure 51 Service Port Connector and User Port Terminal on
Motherboard ............................................................................. 79
Figure 52 Connection Example between PC Serial Port and User Port .. 80