FS10A Analyzer Flow Switch and Monitor
Product Overview
The FS10A is a universal flow switch and monitor which is specifically designed for gas and liquid process analyzer sampling systems. As a fast responding, highly repeatable sensor, the FS10A can install easily into a standard tube tee fitting or SP76 (NeSSI) modular manifold and is an ideal option for utilizing proven thermal dispersion flow measurement technology.
Built with superior corrosion-resistant 316L stainless steel and including Hastelloy C-22 sensor tips, the sensor element has no moving parts to foul, clog or maintain which ensures continuous reliability and no maintenance costs. In addition, the Fs10A utilizes proprietary equal mass sensing technolgoy from FCI which is designed to achieve outstanding sensitivity and repeatability.
For more information about the FS10A analyzer flow switch and monitor, contact a Cross process solutions expert. As an exclusive representative for Fluid Components International, Cross offers the complete line of FCI flow equipment throughout our territories in the mid-Atlantic area, including; Maryland, Virginia, and Washington D.C.

Features
- For gases and liquids
- Superior low flow sensing
- SP76 Mounting (NeSSI) systems or tube tee
- Requires only one SP76 block
- Push button or RS232 set-up
- Single configuration meets all flow ranges, 100:1 turndown
- Choice of outputs: Open collector (N-Channel) or relay, and 4-20 mA
- LED array shows flow rate and switch trip
- Integral or remote
- Simple, screw-in installation
- No moving parts
- No cavities or dead-legs
- SIL 2 Rated
Specifications
Media Compatibility: All gases and liquids compatible with 316L stainless steel or Hastelloy-C
Process Connection: 1/4″ NPT; compatible with 3/8″, 1/2″ tube tee, 1/4″ with 1/8″ injection tube adapters and SP76 adapter (FCI part number 019897-01)
Flow Sensitivity: Contact for full specs
Repeatability: ± 0.5% of reading
Temperature Compensation:
- Standard: ± 30 ºF [± 16 ºC]
- Optional Extended: ± 100 ºF [± 55 ºC]
Temperature Coefficient: For temperatures > ± 30 ºF [± 16 ºC] and with optional extended temperature compensation
- Gas: Maximum ±0.025% of reading/ºF up to 500 ºF [± 0.05% of reading/ºC up to 260 ºC]
- Liquid: Maximum ± 0.2% of reading/ºF up to 250 ºF [± 0.367% of reading/ºC up to 121 ºC]
Turndown Ratio: 5:1 to 100:1
Flow Element
Materials of Construction: (Wetted parts) 316L stainless steel with Hastelloy C-22 thermowells; Optional, all Hastelloy C-22 probe assembly
Operating Temperature:
- Standard: -40 °F to 250 °F [-40 °C to 121 °C]
- Optional: -40 °F to 500 °F [-40 °C to 260 °C]; remote configuration only
Operating Pressure:
- Tube tee fitting: Tube tee and insertion – 2000 psig [137 bar (g)]
- SP76 adapter: Per SP76 manifold specifications up to 500 psi [34 bar(g)] maximum
For full specifications, including certifications, agency approvals and ratings, download the product specification sheet below.