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Festo
8158421
Flow sensor SFAH-200U-Q6S-PNLK-PNVBA-M8
The Festo part number 8158421 is an industrial component utilizing a thermal heat transfer measuring principle for unidirectional mass and volumetric flow rate monitoring. It features a flow measuring range from 4 l/min to 200 l/min, an operating pressure of -0.9 bar to 10 bar, and is compatible with compressed air, argon, and nitrogen within a 0 °C to 50 °C medium and ambient temperature range. This unit carries RCM compliance, c UL us - Listed (OL), CE, and UKCA markings while meeting EU and UK RoHS directives. Submit the exact part number, quantity, and application requirements for a quote.
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Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Festo references — within one business day.
- Manufacturer
- Festo
- Part number
- 8158421
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 8158421.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Certication
- RCM compliance mark | c UL us - Listed (OL)
- CE marking (see declaration of conformity)
- As per EU EMC directive | As per EU RoHS directive
- UKCA marking (see declaration of conformity)
- To UK instructions for EMC | To UK RoHS instructions
- Note on materials
- RoHS compliant
- Measured variable
- Mass ow | Volumetric ow rate
- Flow direction
- Unidirectional
- Measuring principle
- Thermal
- Method of measurement
- Heat transfer
- Flow measuring range start value
- 4 l/min
- Flow measuring range end value
- 200 l/min
- Operating pressure
- -0.9 bar...10 bar
- Operating medium
- Argon | Compressed air as per ISO 8573-1:2010 [6:4:4] | Nitrogen
- Temperature of medium
- 0 °C...50 °C
- Ambient temperature
- 0 °C...50 °C
- Nominal temperature
- 23 °C
- Accuracy of ow rate
- ± (2% o.m.v. + 1% FS)
- Zero point repetition accuracy in ± %FS
- 0.2 %FS
- Repetition accuracy margin in ± %FS
- 0.8 %FS
- Temperature co-efficient margin in ± %FS/K
- typ. 0.15%FS/K
- Pressure inuence of margin in ±%FS/bar
- 1 %FS/b.
- Switching output
- 2 x PNP or 2 x NPN switchable
- Switching function
- Window comparator | Threshold value comparator | Auto difference monitoring
- Switching element function
- N/C contact/N/O contact, switchable
- Max. output current
- 100 mA
- Analog output
- 0 - 10 V | 4 - 20 mA
Engineering context
Identification and RFQ Guidance
What to include in your RFQ
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Technical verification
Our sourcing response is prepared against Festo 8158421. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.