Inline flow controller with LEDs
BFF T_ _ _ _-_ _003-_ _ _A2A-S4
Troubleshooting
Error
Possible cause
No LED comes
Incorrect or no
on
supply voltage
Flow rate
Sensor operated
changes are not
outside of
indicated
specifications or
incorrectly installed
Switching
Sensor
response
contaminated
changes
Technical data
General data
Display
LED green (4×)
LED yellow
LED red
Operating panel
Functional principle
Electric data
Operating voltage
Switching current
Switching cycles
Current drain
Polarity reversal protected
6
english
Remedy
Check supply
voltage.
Check
conditions and
installation
Clean inside of
measuring
tube
Limit exceeded
Limit reached
Limit undershot
Potentiometer screw
Flow sensor, calorimetric
20...28 V DC
400 mA
≥ 100 × 10
6
≤ 60 mA
yes
Technical data
Electrical Connection
Connector
M12, 4-pole
Short-circuit protection
yes
Output / interface
Switching output
PNP
Mechanical data
Pressure rating
≤ 20 bar
Process connection
G1/2" external thread
Materials
Gasket, material
AFM 34
Housing material
PBT
Process connection
1.4571 stainless steel
material
Detection range / measuring range
Stand-by delay t
≤ 15 s
v
Response time
≤ 10 s
Detection range
2...25 l/min
Ambient conditions
Medium temperature
0...+80 °C
Storage temperature
–20...+80 °C
IP rating per IEC 60529
IP67
Ambient temperature
0...+60 °C