Dinel TFS-35 Thermal Mass Flow Sensor

Dinel TFS-35 Thermal Mass Flow Sensor

Dinel TFS-35 Thermal Flow Sensor is a compact measuring device intended for industrial use for flow rate sensing of liquid media and for monitoring of their temperature when installed in a pipe. The sensor may be installed in plastic or metal pipes. Suitable for monitoring filling, cooling, or lubricating media and their temperatures.

The flow rate is indicated by means of a bar graph (5 green LEDs). Output (flow rate and temperature) switching indicator by means of LED (orange and yellow). Simple configuration using a magnetic pen. The sensor is made in stainless steel design. Quick and simple installation thanks to simple construction.

Dinel TFS-35 Thermal Flow Sensor Features

  • These sensors are intended for installation in pipes, in which the actual flow rate and temperature occurs
  • Flow rate measurement is shown in a bar graph by five green LED diodes and in the same graduation it is possible to select the limit for output switching (unswitching)
  • Optical indication of the flow rate and temperature status via two LEDs
  • Can be selected either 1x current output 4..20 mA and 1x limit PNP output, or 2x limit PNP output
  • Settings provided by magnetic pen
  • Stainless steel case

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Dinel TFS-35 Thermal Flow Sensor Specifications

Working area (EN 60079-10-1) no explosive hazard area
Supply voltage 12 … 34 V DC
Current consumption TFS-35N-_-_-PFPT-_ 60mA for supply voltage U = 24V DC
70mA for supply voltage U = 18V DC
80mA for supply voltage U = 15V DC
100mA for supply voltage U = 12V DC
TFS-35N-_-_-IFPT-_ 60mA for supply voltage U = 24V DC + current loop
TFS-35N-_-_-IFPF-_ 70mA for supply voltage U = 18V DC + current loop
80mA for supply voltage U = 15V DC + current loop 100mA for supply
voltage U = 12V DC +current loop
Output TFS-35N-_-_-PFPT-_ 2 x transistor PNP with open collector
(Switching current – max. 300 mA,
Residual voltage-ON state – max.1,5V)
TFS-35N-_-_-IFPT-_ 1 x transistor PNP with open collector
TFS-35N-_-_-IFPF-_ (Switching current – max. 300 mA,
Residual voltage-ON state – max.1,5V)
1 x active current output 4 .. 20 mA.
Maximal resistance of current output load 800 Ω for supply voltage U = 24V DC
500 Ω for supply voltage U = 18V DC
200 Ω for supply voltage U = 12V DC
Indication of incorrect settings 3,75 mA at current output + indication of bargraph
Maximum switching current 300 mA
Maximum residual voltage in ON state 1,5 V
Temperature output – switching points 15 °C; 30 °C; 45 °C; 60 °C; 75 °C
Flow rate range 1 to 150 cm/s (for water)
Temperature gradient  < 250 K/min
Isolating capacity (housing – inputs) / electrical strength  4 nF / 350 V AC
Protection IP67 (variant C) IP68 (variant A, B, V, H)
Ambient working temperature range (ta)  -20 … +80°C
Cable PVC 4x 0,5 mm2
Heat up time after start 10s
Response time  2 to 15s *1)
Pressure strength 10 MPa ( 100 bar ) over full temperature range
Weight of sensor (without cable) 150 g

Download Catalog: Thermal flow sensor TFS – 35, Dinel-Flowmeter

Ref: Dinel.cz

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