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VAISALA_________________________________________________________________________ 5
CHAPTER 7
TECHNICAL DATA .................................................................................... 127
Specifications ....................................................................... 127
Performance...................................................................... 127
Options and Accessories .................................................... 131
Technical Specifications of Optional Modules .................. 131
Dimensions in mm (inches) ................................................ 133
Spare Parts ........................................................................... 134
APPENDIX A
EXAMPLE INSTALLATION OF DMT346 .................................................. 135
APPENDIX B
CALCULATION FORMULAS .................................................................... 139
List of Figures
Figure 1 Transmitter Body ...................................................................... 18
Figure 2 Inside of Open Transmitter....................................................... 19
Figure 3 Probes, Cooling Set ................................................................. 20
Figure 4 Standard Mounting ................................................................... 22
Figure 5 Mounting with Wall Mounting Kit .............................................. 23
Figure 6 Dimensions of Plastic Mounting Plate...................................... 23
Figure 7 Mounting with Metal Wall Mounting Plate ................................ 24
Figure 8 Dimensions of Metal Mounting Plate in mm............................. 25
Figure 9 Mounting with DIN Rail Installation Kit ..................................... 26
Figure 10 Vertical Pole Installation ........................................................... 26
Figure 11 Horizontal Pole Installation....................................................... 27
Figure 12 Mounting the Rain Shield with Installation Kit .......................... 27
Figure 13 Panel Mounting with Frame...................................................... 28
Figure 14 Panel Mounting Dimensions .................................................... 28
Figure 15 DMT345 Probe Dimensions in mm (inches) ............................ 29
Figure 16 Flange Installation Kit ............................................................... 29
Figure 17 DMT346 Probe Dimensions in mm .......................................... 30
Figure 18 Cooling Set Dimensions in mm ................................................ 31
Figure 19 Measurement Ranges for Using and Not Using the
Cooling Fins .............................................................................
32
Figure 20 Parts of the Cooling Set (Dimensions in mm) .......................... 32
Figure 21 Mounting Flange Dimensions in mm ........................................ 33
Figure 22 Installing Probe Through Process Wall .................................... 34
Figure 23 Installing Probe Through Thick Walls....................................... 35
Figure 24 Cable Bushings ........................................................................ 36
Figure 25 Grounding the Screen of Electrical Cable ................................ 37
Figure 26 Screw Terminal Block on the Motherboard .............................. 39
Figure 27 Connections to 24 VAC Power Supply..................................... 41
Figure 28 Power Supply Module .............................................................. 42
Figure 29 Galvanic Output Isolation Module ............................................ 46
Figure 30 Relay Module ........................................................................... 47
Figure 31 RS-485 Module ........................................................................ 48
Figure 32 4-Wire RS-485 Bus Connections, Part A ................................. 50
Figure 33 4-Wire RS-485 Bus Connections, Part B ................................. 51
Figure 34 Wiring of Optional 8-Pin Connector.......................................... 52
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