FCI Model FS10A flow switch/monitor for process sampling systems.

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The Model FS10A flow switch/monitor from Fluid Components International (FCI) has received ATEX and IECEx approvals, making it suitable for continuous flow verification applications supporting process analyser sampling systems operating in hazardous plant areas.

The FS10A’s ATEX and IECEx approvals are as follows: II 3 G Ex nA IIC T4 Gc, II 3 D Ex tc IIIC T T81°C Dc, IP64; Ex nA and Ex t, Ex nA IIC T4 Gc, II 3 D Ex tc IIIC T81°C Dc. In addition to ATEX and IEC, agency approvals also include FM and FMc: Nonincendive, Class I, Division 2 Groups A, B, C, D; Class II, Division 2 Groups E, F, G; Class III T4@Ta=71°C Type 4X. It also features the CE Mark.

Small and lightweight, the instrument features a relay alarm trip point, an analog output and an RS232 interface. It is suitable for continuous monitoring of analyser sample flows to provide process analysis without interruption. The instrument’s wetted parts are corrosion-resistant 316L stainless steel with Hastelloy-C22 sensor tips.

Depending on the tube size, the analyser flow switch operates over a wide flow range in air or gas; from 10 cc/min to 100,000 cc/min, and in water and liquids from 0.70 cc/min to 750.00 cc/min. It accommodates wide turndowns with a ratio up to 100:1.

The electronics can be integral mounted with the sensor element in a uni-body configuration or remotely mounted for easy front panel display viewing. The instrument features a top-mounted, ten LED array and two pressure-sensitive button touch controls.