Products
View some of our proven products from leading manufacturers, selected to deliver reliable solutions and supported across the UK.
The FS10A Analyser Flow Switch / Monitor is a compact, high-sensitivity thermal flow instrument designed specifically for process analyser systems, providing reliable detection of ultra-low gas and liquid flow rates.
It is ideally suited for installation within analyser panels and sampling systems, with the ability to integrate directly into standard Tee configurations or SP76 (NeSSI) modular manifolds. This makes it a practical and efficient solution for modern analyser systems where space, accuracy and reliability are critical.
The FS10A offers ultra-low flow detection capability, making it a strong alternative to traditional rotameters. It provides accurate and repeatable flow indication without moving parts, helping to improve reliability and reduce maintenance requirements in sensitive applications.
The unit features a 10-segment LED display for clear visual indication of flow conditions, along with multiple output options including 4–20mA and relay outputs for integration into control systems. It can be calibrated in situ and adjusted via push buttons on the housing, allowing easy setup and maintenance without removing the instrument.
With robust construction and material options including 316 stainless steel and Hastelloy, the FS10A is suitable for demanding environments and is available with ATEX Zone 1 & 2 certification and SIL2 rating, supporting use in hazardous and safety-related applications.
Where precise low-flow detection is required within analyser systems, the FS10A provides a compact and reliable solution.
- Compact thermal flow switch for process analyser systems
- Designed for ultra-low gas and liquid flow detection
- Suitable for analyser panels and sampling systems
- Compatible with standard Tee and SP76 (NeSSI) manifolds
- Ideal alternative to rotameters
- Flow rates from 10 cc/min (gas) and 0.7 cc/min (liquid)
- 10-segment LED display for flow indication
- In-situ calibration with push-button adjustment
- 4–20mA and relay outputs
- Available in 316 stainless steel and Hastelloy
- ATEX Zone 1 & 2 certified and SIL2 rated
- Process temperatures up to +260°C
Over 45 Years in Operation
1000's of UK Installations
Supporting 100's of UK Sites
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Allison Engineering supports projects from early-stage selection through to supply, commissioning and long-term support. For customers, that means not just choosing a product, but getting the right solution for the application.
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Supply & Commissioning
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Teams providing calibrations, servicing, maintenance, training and ongoing support to keep systems performing accurately and reliably over time.

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