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Features at a Glance

Simple operation via the display
Measurement independent of flow direction
Installation in any position
Highest precision of its class
Temperature of the medium: 0 ... 60° C (140° C for 24 hours without current measurement)

FFAF218 Flow Sensor

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wenglor UniFlow flow sensors measure the flow rate of aqueous and oily media in closed piping systems. UniFlow flow sensors are very easy to operate thanks to the integrated display. The highly visible switching status display enables the rapid localization of affected sensors for maintenance processes.

Features at a Glance

Simple operation via the display
Measurement independent of flow direction
Installation in any position
Highest precision of its class
Temperature of the medium: 0 ... 60° C (140° C for 24 hours without current measurement)

Technical data

Sensor-specific data
Measuring Range	15 ... 100 cm/s
Setting Range	20 ... 100 cm/s
Medium	Oil
Measuring error (total)	10 %
Switching Hysteresis	5 %
Temperature gradient	30 K
Response time in case of temperature jump	10 s

Environmental conditions
Temperature of medium	0 ... 60 °C
Ambient temperature	-20 ... 70 °C
Pressure Resistance	60 bar
EMC	DIN EN 60947-5-9
Shock resistance per DIN IEC 68-2-27	30 g / 11 ms
Vibration resistance per DIN IEC 60068-2-6	20 g (10...2000 Hz)

Electrical Data
Supply Voltage	16 ... 32 V DC
Current Consumption (Ub = 24 V)	60 mA
Number of Switching Outputs	1
Response Time	4 ... 15 s
Relay Output/Switching Current (24 VDC)	< 1 A
Short Circuit Protection	yes
Reverse Polarity Protection	yes
Protection Class	III

Mechanical Data
Setting Method	Menu
Housing Material	Plastic, PBT Plastic, PC
Material Control Panel	Polyester
Material in contact with media	Stainless steel, V4A (1.4404 / 316L) Stainless steel, V4A (1.4435/316L) Rubber, FKM
Degree of Protection	IP67 *
Connection	M12 × 1; 5-pin
Process Connection	G 1/2"
Process Connection Length (PCL)	73.6 mm
Probe Length (PL)	37.6 mm
Weight	323 g

Output
PNP NO	yes

Adjustable parameters
Output	Relay
Circuit	NC NC/NO NO
Other parameters	Switching point Selectable measurement range
All other parameters can be found in the product documentation.