The FS10i is a universal flow switch and flow monitor designed for simple insertion into ½” (13mm) or larger diameter pipes and square ducts. The unit is suitable for either liquid or air/gas applications. It is fast responding and highly repeatable to both increasing and decreasing flow rate changes. The standard 1A relay trip point is easily set in the field for low or high trip point and the trip and reset points can be further tuned with hysteresis and time delay adjustments. Also included standard is a 4-20mA trending output of the flow rate for connection to ancillary controls or alarm systems. The FS10i includes a 10-LED array which provides both an indication the trip point has been exceeded (LED flashes on/off) and of relative flow rate (10% increments) across the flow range.
The FS10i provides best-in-class features for installation in rugged duty and long-life in industrial plants, process and large buildings. Its flow sensor’s thermowells are constructed of highly corrosion resistant Hastelloy C-276, it will operate in fluid temperatures up to 250°F/121°C, IP protection rating to IP67, optional global agency approvals for installation in Division 2/Zone 2 locations and it is the only unit in its price range to carry a SIL 2 compliance rating. It has no moving parts to clog and requires no routine maintenance which saves time and expense over any mechanical-technolog
Applications | |
Cooling Water and Fluids | Leak Detection |
Lubricant Flow Assurance | Chemical Injection |
Vent Flow Assurance | Filter Blockage/Change Indication |
Nitrogen Purge Verification | Compressed Air/Gas Leak Alarm |
Measuring Principal: Thermal dispersion
Response Time: 4 sec. (1 time constant)
Process Connections: 1/4″NPT(M) or 1/2″NPT(M) compression fitting with either Teflon or metal ferrule
Repeatability: ±0.5% of reading
FM*, 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 | ||
ATEX*, IECEx*, | Nonincendive for gas and dust, Zone 2 | |
EAC (TRCU) Russia,* | II 3 | G Ex nA IIC T4 Gc |
KC (Korea)* | II 3 | D Ex tc IIIC T81°C Dc |
*Pending; contact FCI for current status | ||
Ingress Protection | IP66, IP67 |
CE Marking, CRN, complies with Canadian Electrical code requirements of ANSI/ISA 12.27.01-2011 as a single seal device
IEC 61508 (SIL) | SIL 2 Compliant; Safe Failure Fraction (SFF) 90% |
Warranty: 1 Year |
Materials of Construction (Wetted Parts)
316L SS with Hastelloy-C22 thermowells
Flow Sensitivity/Setpoint
Water: 0.01 FPS to 0.5 FPS [0,003 MPS to 0,15 MPS] Air: 0.25 FPS to 400 SFPS [O,076 MPS to 122 MPS]
Repeatability: ±0.5% of reading
Temperature Coefficient For temperatures > ±30°F [±16°C]
Gas: Maximum ±0.025% of reading/°F up to 250°F [±0,05% of reading/°C up to 121°C]
Liquid: Maximum ±0.2% of reading/°F up to 250°F [±0,367% of reading/°C up to 121°C]
Operating Temperature
-40°F to 250°F [-40°C to 121]
Teflon ferrule maximum temperature is 200°F [93°C]
Operating Pressure
2000 psi [138 bar]
Teflon ferrule maximum pressure is 150 psig [10 bar(g)]
Insertion “U” lengths
2″[50 mm] fixed
6″[150 mm] with variable insertion depth, compression fitting with Teflon or metal ferrule
Fluid Components Intl. (FCI) | |
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Product Category | Velocity Flow Switches |
Product Number | FS10i |
Product Name | Universal Flow Switch and Flow Monitor |
Meter Technology | Thermal |
Features | Programmable |
Additional Variables Measured | Temperature |
Approvals | ATEX; FM, FMc, IECEx, EAC (TRCU) Russia, KC (Korea), IP66, IP67, CE Marking, CRN, IEC, SIL 2 Compliant |
Operating Temperature | -40 to 320 F (-40 to 160 C) |