Field Instruments

Product Overview

The Festo SFAH-0.1B-G18FS-PNLK-PNVBA-M8 is a compact, high-precision thermal flow sensor designed to monitor extremely low air and nitrogen flow rates with exceptional accuracy. Using a thermal heat-transfer measuring principle, it measures both mass and volumetric flow bidirectionally and provides fast, stable readings for advanced automation systems.

With its two-colour illuminated display, IO-Link® communication, and multiple analogue and switch outputs, this device is ideal for industrial air monitoring, leak detection, energy management, and system diagnostics in pneumatic networks.

Key Features

• Bidirectional flow measurement for mass and volumetric flow rates.
• Thermal heat-transfer principle ensures high accuracy and stability.
• Measuring range: 0.002 L/min – 0.1 L/min.
• Dual switching outputs: configurable as PNP or NPN with window, threshold, or auto-difference comparator functions.
• Analogue outputs: 0–10 V, 4–20 mA, or 1–5 V.
• IO-Link® V1.1 compatible for parameterisation, diagnostics, and process data monitoring.
• Multicolour LCD display with adjustable units (g, g/min, L, L/h, L/min, scft, scft/h).
• Robust build: reinforced PA housing, silicon and stainless-steel wetted parts.
• Compact and lightweight: only 90 g with G 1/8 internal thread.
• Short-circuit and overload protection for all outputs.
• Configurable via display, teach-in, or IO-Link® interface.

Technical Specifications

• Manufacturer: Festo
• Model: SFAH-0.1B-G18FS-PNLK-PNVBA-M8
• Part Number: 8158427
• Measured Variable: Mass / Volumetric flow rate
• Flow Direction: Bidirectional
• Measuring Principle: Thermal (heat-transfer)
• Flow Range: 0.002 L/min to 0.1 L/min
• Operating Pressure: –0.9 bar to 10 bar
• Media: Compressed air (ISO 8573-1 [6:4:4]) / Nitrogen
• Media Temperature: 0 °C to 50 °C
• Ambient Temperature: 0 °C to 50 °C
• Nominal Temperature: 23 °C
• Accuracy: ± (2 % of measured value + 1 % FS)
• Repeatability (zero): ± 0.2 % FS
• Repeatability (span): ± 0.8 % FS
• Temperature Coefficient: 0.15 % FS/K
• Pressure Influence: 1 % FS/bar
• Outputs: 2 × PNP/NPN switchable + analogue (0–10 V / 4–20 mA / 1–5 V)
• Max Output Current: 100 mA
• Communication: IO-Link® V 1.1, COM2 (38.4 kBd), Smart Sensor Profile
• Operating Voltage: 22 V to 26 V DC
• Current Consumption: ≤ 25 mA
• Electrical Connection: M8×1 A-coded plug (4-pin)
• Pneumatic Connection: G 1/8 internal thread (straight outlet)
• Display: Multicolour LCD, illuminated
• Weight: 90 g
• Housing Material: Reinforced PA
• Media-Contact Materials: Silicon, Silicon Nitride, Stainless Steel
• Protection: IP40
• Corrosion Resistance: CRC 2 – Moderate
• Pressure Drop: < 5 mbar
• Cleanroom Class: Class 4 (ISO 14644-1)
• Conformities: CE, UKCA, UL Listed, RCM, RoHS-compliant

Applications

• Leak detection in compressed-air and nitrogen systems.
• Flow verification in pneumatic and automation circuits.
• Energy-consumption monitoring for industrial compressed-air networks.
• OEM integration in analytical, semiconductor, and packaging machines.
• Predictive maintenance and condition monitoring of pneumatic systems.
• Cleanroom applications where Class 4 compliance is required.

Why Buy from FieldInstruments.lk?

At FieldInstruments.lk, Sri Lanka’s trusted source for Festo instrumentation and automation solutions, we offer only genuine Festo components with official warranty, local technical expertise, and fast delivery.

Our Advantages:

• Original Festo products with manufacturer backing
• Competitive pricing and nationwide delivery
• Local engineering support and training
• Dependable after-sales service and calibration assistance

The Festo SFAH-0.1B-G18FS-PNLK-PNVBA-M8 delivers high-accuracy, low-flow monitoring in a compact and robust design — ideal for advanced automation and air-management systems.

Festo SFAH-0.1B-G18FS-PNLK-PNVBA-M8 Sri Lanka
Festo 8158427 flow sensor
Festo SFAH flow switch Sri Lanka
Festo SFAH thermal flow sensor
Festo G1/8 flow sensor compressed air
IO-Link flow sensor Festo
Low flow measurement sensor Festo
Industrial flow sensor Sri Lanka
Festo air and nitrogen flow monitor
FieldInstruments.lk Festo SFAH

Fieldinstruments.lk
50/3, Angampitiya Rd, Ethul Kotte, Sri Lanka. 10100.
Phone: +94718555888 Email: info@fieldinstruments.lk