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

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