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VAISALA ________________________________________________________________________ 1
Table of Contents
CHAPTER 1
GENERAL INFORMATION .......................................................................... 11
About This Manual ................................................................. 11
Contents of This Manual ..................................................... 11
Version Information ............................................................. 12
Documentation Conventions ............................................... 12
Safety....................................................................................... 13
ESD Protection.................................................................... 13
Recycling ................................................................................ 13
Regulatory Compliances ....................................................... 14
EU Declaration of Conformity.............................................. 14
Transmitters with LAN or WLAN Interface .......................... 14
Transmitters with WLAN Interface ...................................... 15
Patent Notice .......................................................................... 15
Trademarks ............................................................................. 15
License Agreement ................................................................ 15
Warranty .................................................................................. 16
CHAPTER 2
PRODUCT OVERVIEW................................................................................ 17
Introduction to DMT340 ......................................................... 17
Basic Features and Options................................................ 18
Structure of the Transmitter ................................................ 19
Probe Options ..................................................................... 21
CHAPTER 3
INSTALLATION............................................................................................ 23
Mounting the Housing ........................................................... 23
Standard Mounting without Mounting Plate ........................ 23
Wall Mounting with Wall Mounting Kit................................. 24
Mounting with DIN Rail Installation Kit ................................ 26
Pole Installation with Installation Kit for Pole or Pipeline .... 27
Mounting the Rain Shield with Installation Kit ..................... 28
Panel Mounting Frame........................................................ 28
Wiring ...................................................................................... 30
Cable Bushings ................................................................... 30
Grounding the Cables ......................................................... 31
Transmitter Housing Grounding .......................................... 32
Signal and Power Supply Wiring......................................... 32
Connections to a 24 VAC Power Supply ............................ 34
Probe Mounting ...................................................................... 35
DMT342 Small-size Flanged Probe for Use with
Sampling Cell ...................................................................... 35
DMT344 For High-pressure Applications............................ 37
DMT347 Small Pressure-tight Probe .................................. 39
