Vaisala DRYCAP® Dewpoint Transmitters DMT345 and DMT346
 

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    Overview
     

    Overview

    		 

      • 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

       
      Technical Specifications
       

      Technical Specifications

      		 

      Dewpoint measurement

       

      DMT345

      DMT346

      ​
      		 ​Range ​-40..+100 °C (-40..+212 °F)
      		 ​-25..+100 °C (-13..+212 °F)
      ​
      		 ​Accuracy ​±2 °C (±3.6 °F) ​±2 °C (±3.6 °F)
      ​
      		 ​Sensor ​Vaisala DRYCAP® 180S ​Vaisala DRYCAP® 180S


      Temperature measurement DMT345

       

      Range

      0...+180 °C (+32...+356 °F)

      ​
      		 ​    with sensor warming ​upper range limited by humidity
      ​
      		 ​Accuracy ​±0,4 °C at +100 °C (±32.72 at 212 °F)
      ​
      		 ​Temperature sensor ​Pt 100 IEC 751 1/3 class B


      Operating environment

       

      DMT345

      DT346

      ​
      		 ​Mechanical durability of probes ​up to +180 °C (+356 °F) ​up to +350 °C (+662 °F)
      ​
      		 ​transmitter body
      with display      		 ​-40..+60 °C (-40..+140 °F)
      0..+60 °C (32..+140 °F)      		 ​-40..+60 °C (-40..+140 °F
      0..+60 °C (32..+140 °F)


      Inputs and outputs, both models

      ​
      		 ​Operating voltage
      		 ​10…35 VDC, 24 VAC
      ​
      		 ​Power consumption @ 20 °C (Uin24 VDC) ​
      ​
      		 ​    Uout 2x0...1V/0...5V/0...10V ​max 25 mA
      ​
      		 ​     Iout 2x0...20mA ​max 60 mA
      ​
      		 ​RS-232 ​max 25 mA
      ​
      		 ​display and backlight ​+ 20 mA
      ​
      		 ​during sensor purge ​+ 110 mA max
      ​
      		 ​Analog outputs ​2 standard, 3rd optional
      ​
      		 ​Digital outputs ​RS-232, RS-485 (optional)
      ​
      		 ​Ethernet interface (optional) ​
      ​
      		 ​  Supported standards ​10/100Base-T
      ​
      		 ​    Connector ​RJ45
      ​
      		 ​    Protocols ​Telnet
      ​
      		 ​WLAN interface (optional) ​
      ​
      		 ​     Supported standards ​802.11b
      ​
      		 ​    Antenna connector type ​RP-SMA
      ​
      		 ​    Protocols ​Telnet
      ​
      		 ​   Security ​WEP 64/128,WPA
      ​
      		 ​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 ​max. three with trend/min/max values
      ​
      		 ​    Logging interval ​10 sec (fixed)
      ​
      		 ​    Max. logging period ​4 years 5 months
      ​
      		 ​    Logged points
      		​13,7 million points per parameter
      ​
      		 ​     Battery lifetime ​min. 5 years
      ​
      		 ​Menu languages ​English, French, Spanish, German, Japanese, Russian, Swedish, Finnish, Chinese

      Mechanics

       

      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

      For complete specifications, please see the brochure or manual in "Documents".

       
      Related Services
      • Service Center Calibration 
        • Regular calibration ensures that your Vaisala equipment continues to provide accurate, high-quality data. We offer traceable, standards-compliant calibration services for almost all Vaisala products and partner with world-class couriers for rapid, trouble-free return of your equipment.
      • Repair Services 
        • Vaisala repair services include fault tracing and repair or replacement of failed components, as well as final testing to ensure your equipment is functioning properly. Repairs can be carried out on site or at one of our service centers.
      • Spare Parts 
        • Get rapid access to the spare parts you need to maximize the uptime of your equipment and ensure reliable and accurate operation. In addition to standard spare part delivery, we also offer an express service where parts are shipped within one business day.
      • Warranty 
        • All Vaisala products and services are covered by a 12-month warranty as standard, with selected products covered for up to 24 months. During this period you benefit from free repair or replacement of faulty equipment. With Vaisala’s extended warranty, you get free repair or replacement for five years.
      Documents