The SFAH flow sensor combines high flow dynamics with a compact design and has been developed to measure non-corrosive gases and air. It is designed for use in the general automation market, particularly for small parts picking applications, consumption monitoring, air gap checking and leakage detection.
The SFAH flow sensor has an intuitive user interface with high output flexibility. It also has a high level of in-built flexibility thanks to switchable electrical outputs – including NPN/PNP, NO/NC and IO-Link. Equipped with digital and analogue outputs, it can be programmed directly via ‘teach’ buttons on the unit, or by using an IO-link master and selecting parameters via a computer or PLC.
The SFAH flow sensor is IP40 rated for use in general industrial applications and a range of accessories is available to protect the sensor in harsher environments.
Technical data
| Permission | RCM mark |
| CE certificate (see declaration of conformity) | acc. to EU-EMV Directive acc. to EU-RoHS Directive |
| KC-mark | KC-EMV |
| Material information | RoHs compliant |
| Measured parameter | Mass flow Volume flow rate |
| Flow direction | Uni-directional |
| Measurement principle | Thermic |
| Measurement process | Heat Transfer |
| Flow measurement range starting value [l/min] | 0,200 |
| Flow measurement range end value [l/min] | 10,0 |
| Operating pressure [bar] | -0.9 to 10 |
| Operating medium | Druckluft nach ISO 8573-1:2010 [6:4:4] Stickstoff Argon |
| Medium temperature [°C] | 0 to 50 |
| ambient temperature [°C] | 0 to 50 |
| Nominal temperature [°C] | 23 |
| Accuracy flow value | ± (2% o.m.v. + 1% FS) |
| Repeatability null point in ± %FS [] | 0,2 |
| Repeatability clamp in ± %FS [] | 0,8 |
| Temperature coefficient clamp in ± %FS/K | type 0,15%FS/K |
| Pressure dependency clamp in ± %FS/bar [] | 1 |
| Control output | 2 x PNP or 2 x NPN switchable |
| Switch function | Window comparator Threshold comparator Auto difference monitoring |
| Switching element function | Opener/closer switchable |
| Max. output current [mA] | 100 |
| Analogue output | 0 - 10 V 4 - 20 mA 1 - 5 V |
| Flow characteristic curve starting value [l/min] | 0 |
| Flow characteristic curve end value [l/min] | 10,0 |
| Max. load resistance current output [Ohm] | 500 |
| Min. load resistance voltage output [Kilo-Ohm] | 20 |
| Short circuit resistance | yes |
| Overload resistant | Available |
| Report | IO-Link |
| IO-Link, report | Device V 1.1 |
| IO-Link, profile | Smart sensor profile |
| IO-Link, function classes | Teach channel Diagnosis Identification Binary data channel (BDC) Process data variables (PDV) |
| IO-Link, communication mode | COM2 (38.4 kBaud) |
| IO-Link, SIO mode support | yes |
| IO-Link, port type | A |
| IO-Link, process data width IN | 3 Bytes |
| IO-Link, process data contents IN | 1 bit BDC (Volume monitoring) 14 bit PDV (Flow measurement) 2 bit BDC (Flow monitoring) |
| IO-Link, service data unit IN | 32 bit PDV (volume measurement) |
| IO-Link, minimum cycle time | 4 ms |
| IO-Link, data memory needed [Byte] | < 0,5 kB |
| Operating voltage range DC [V] | 22 to 26 |
| Empty run current [mA] | <= 25 mA |
| Reverse polarity protection | for all electrical connections |
| Electrical connection 1, connection type | Plug |
| Electrical connection 1, connection technology | M8x1, A coded to EN 61076-2-104 |
| Electrical connection 1, number of pins / wires | 4 |
| Fastening type | With Accessories |
| installation position | arbitrary |
| Pneumatic connection | For hose exterior diameter 6 mm |
| Pneumatic connection, connection outlet | straight |
| Product weight [g] | 60 |
| Housing material | PA reinforced |
| From medium contacting materials | NBR high-alloyed stainless steel PA reinforced Alu wrought alloy, anodised Epoxy resin Silicon Silicon nitride |
| Display type | Illuminating LCD Multiple |
| Presentable unit(s) | g g/min l l/h l/min scft scft/h scft/min |
| Setting options | IO-Link Teach-In über Display und Tasten/td> |
| Tamper-proof fuse | IO-Link PIN code |
| Protection category | IP40 |
| Pressure drop [mbar] | < 5 mbar |
| Protection class | III |
| Corrosion resistant class KBK | 2 - moderate corrosion stress |
