Flow switch for monitoring of mass flow in hygienic design

Flowphant T DTT35

11-35 Pcs.


  • Three buttons for local set-up, via ReadWin 2000 configuration software or FieldCare

  • On-site display

  • High reproducibility and long-term stability

  • Large turndown

  • Negligible pressure loss


Measuring range:
0.03 to 3 m/s

Medium temperature:

-20 to +85 C

Process pressure:

0 to +100 bar (at 20 C)

Product/VersionPrice/pcs. in NZ$Order code
Flowphant DTT35
Process connection; LengthElectrical ConnectionPower Supply; Output1 to 34 to 1011 to 35
Tri-Clamp 2" Length 50mmPlug M1218-30VDC; switch PNP + 4-20mA670.-623.-590.-DTT35-A1C111DL2BAB
Tri-Clamp 2" Length 100mm670.-623.-590.-DTT35-A1C111DL2CAB
Plug and cable to be ordered as 'accessory'.
The above models are ex stock. Please ask for pricing and delivery time of other DTT35 versions.
Product/VersionPrice/pcs. in NZ$Order code
Accessories1 to 34 to 1011 to 35
M12 right-angle plug with 4-core, 5m PVC cable30.-52010285
Configuration kit TXU10- for PC-programmable devices. set-up programme+interface cable for PC with USB-Port.300.-TXU10-BA

Prices are net, ex store Auckland, GST additional and valid until 30/9/2016.
EMC's standard Terms and Conditions of Supply are applicable.


The Flowphant T DTT35 is a flow switch (surface quality Ra ≤ 0.8 m) for monitoring, displaying and measuring relative mass flow rates of liquid media in the range from 0.03 to 3 m/s. Application examples include: Monitoring cooling water circulation systems of pumps, turbines, compressors and heat exchangers and filter monitoring in the beverage industry.


The device measures the mass flow of a liquid medium with the calorimetric measurement method. The calorimetric measuring principle is based on cooling a heated temperature sensor. Heat is removed from the sensor by forced convection due to medium flowing by. The extent of this heat transfer depends on the medium velocity and the difference in temperature between the sensor and medium (King's law). The higher the velocity or the mass flow of the medium, the greater the temperature sensor cooling.

Technical data

  • Measurement range
0 to 100 %; resol. 1 %; 0.03 to 3 m/s for liquids
  • Output signal
1PNP with analog output for flow and temperature
  • Voltage drop PNP
≤ 2 V
  • Overload protection
Automatic testing
Performance characteristics
  • Reference conditions
According to DIN IEC 60770/61003
  • Measured error
Switch point and display 0.2 %
  • Long-term drift
≤ 0.5 % per year under reference operating conditions
  • Sensor reaction time
6 to 12 s
  • Response time
switch output 100 ms
Operating conditions
  • Medium temperature
-20 to +85 C, 130 C max. 1h (no measuring at temperatures > 85 C)
  • Ambient temperature
-40 to +85 C
  • Degree of protection
IP 65 (complete housing)
Power supply
  • Supply voltage Ub
18 to 30 V DC, reverse polarity protection
  • Current consumption
Without load < 100 mA at 24 V DC
  • EMC
Interference emiss. as per IEC 61326 Series, class B electrical equipment, interference immunity as per IEC 61326 Series, app. A (industrial use) and NAMUR Recomm. NE 21
  • Operating elements
3 buttons or PC and ReadWin 2000
  • Materials
316L (process connection, protection tube, housing)
  • Surface quality
Ra ≤ 0.8 m
  • Desina compliant, 3A

Dimensions (in mm)

Click on image to enlarge

L = sensor length 50 mm, 100 mm

Installation according to operation instructions

Process connections


TRI-CLAMP connections
DL ISO 2852 DN40-51 (2″), 316L, 3A, DIN 32676 DN50

Electrical connection

DC voltage version with M121 connector

A3: PNP switch output, additional analog output