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Vaisala DMT345 and DMT346 Dewpoint Transmitters
Vaisala Instruments

DMT345 & DMP346 DRYCAP® Dewpoint Transmitters

HMD40 HMW50

Constructed for humidity measurement in industrial drying applications with particularly high temperatures. As the probes are designed to be positioned directly in hot processes, there is no need for sampling systems and trace heating. Optional data logging and (W)LAN interface.

  • The DMT345 measures humidity in temperatures up to 180°C (+356 °F)
  • The DMT346 measures humidity in temperatures up to 350 °C (+662 °F)
  • Unique auto-calibration
  • Vaisala DRYCAP® Sensor provides accurate, reliable measurement with excellent long-term stability and fast response
  • Withstands condensation
  • Optional local display with keypad, mains power supply module and alarm relays
  • User-programmable, versatile and easy to use
  • Integrated data logging, with over four years of measured history
  • LAN and WLAN communication options
PDF File DMT345 / DMT346 Brochure PDF File DMT345 Order Guide PDF File DMT346 Order Guide PDF File DMT345 /DMT346 User Guide
Dewpoint measurement


Range
Accuracy
Sensor

DMT345
-40..+100 °C (-40..+212 °F)
±2 °C (±3.6 °F)
Vaisala DRYCAP® 180S

DMT346
-25..+100 °C (-13..+212 °F)
±2 °C (±3.6 °F)
Vaisala DRYCAP® 180S

Temperature measurement DMT345

Range
   with sensor warming
Accuracy
Temperature sensor

0...+180 °C (+32...+356 °F)
upper range limited by humidity
±0,4 °C at +100 °C (±32.72 at 212 °F)
Pt 100 IEC 751 1/3 class B

Operating environment

Mechanical durability of
      probes
      transmitter body
      with display

DMT345
up to +180 °C (+356 °F)
-40..+60 °C (-40..+140 °F)
0..+60 °C (32..+140 °F)

DMT346
up to +350 °C (+662 °F)
-40..+60 °C (-40..+140 °F
0..+60 °C (32..+140 °F)

Inputs and outputs, both models

Operating voltage
Power consumption @ 20 °C (Uin24 VDC)
  Uout 2x0...1V/0...5V/0...10V
  Iout 2x0...20mA
  RS-232
  display and backlight
  during sensor purge
Analog outputs
Digital outputs

Ethernet interface (optional)
     Supported standards
     Connector
     Protocols
WLAN interface (optional)
     Supported standards
     Antenna connector type
     Protocols
     Security
Authentication / Encryption
     Open / no encryption
     Open / WEP
     WPA Pre shared key / TKIP
     WPA Pre shared key / CCMP (a.k.a. WPA2)

Optional data logger with real-time clock
     Logged parameters
     Logging interval
     Max. logging period
     Logged points
     Battery lifetime
Menu languages

10…35 VDC, 24 VAC

max 25 mA
max 60 mA
max 25 mA
+ 20 mA
+ 110 mA max
2 standard, 3rd optional
RS-232, RS-485 (optional)


10/100Base-T
RJ45
Telnet

802.11b
RP-SMA
Telnet
WEP 64/128,WPA







max. three with trend/min/max values
10 sec (fixed)
4 years 5 months
13,7 million points per parameter
min. 5 years
English, French, Spanish, German, Japanese, Russian, Swedish, Finnish, Chinese

Mechanical

Probe cable length
Weight (housing)
Material (housing)
Housing classification

2 m, 5 m or 10 m
1.2 kg
G-AlSi 10 Mg (DIN 1725)
IP 65 (NEMA 4X)

Options and accessories

Display
Relayoutputs 2+2 pcs

LCD with backlight, graphic trend display
0.5 A, 250 VAC, SPDT


DMT345/346 Dewpoint - Industrial



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