Flow Switch Model FLT93S FlexSwitch®
Flow Switch SummaryThe FLT93S insertion type FlexSwitch for flow and temperature
monitoring represents the first true technological breakthrough in
thermal technology in over a decade. This product was designed for
heavy industrial environments including high temperature and high
pressure. FCI is the only thermal manufacturer providing temperature
compensation to ensure set point accuracy for process temperatures
that vary up to ± 100° F. The FLT93S is easily field-configured or
factory preset, providing unparalleled flexibility, accuracy and
stability for all multiple process sensing and switching
For an operational demonstration of FCI's FLT93 FlexSwitch Series,
please follow this
Safety spray nozzle monitoring
Cooling water/heat exchangers
Oil well system testing
Drain line flow
Relief valve monitoring
SpecificationsFor Flow Service - Setpoint Range:
0.01 to 3.0 fps [0.003 to 0.9 mps]
0.01 to 5.0 fps [0.003 to 1.5 mps]
0.25 to 120 sfps [0.08 to 37 smps] at
standard conditions of 70° F [21.1° C] and 14.7 psia
Accuracy: (whichever reading is higher)
Liquids: ± 0.5% reading or ± 0.04 fps [± 0.012 mps]
Gases: ± 0.5% reading or ± 2 sfps [± 0.06 nmps]
For Temperature Service:
Accuracy: ± 2° F [± 1° C]
Repeatability: ± 1° F [± 0.6° C]
Response Time: As low as 3 seconds
Enclosure: Powder coated aluminum enclosure is rated for
hazardous location use Groups B, C, D, E, F and G, CENELEC
EEx d IIC and resists the effects of weather and corrosion
per NEMA/CSA Type 4X (equivalent to IP66). Stainless steel
is available as an option.
Agency Approvals: FM, CSA, CENELEC, ATEX, CE Mark, T4 Rated
(System Approval) and CRN.
Materials of Construction: All-welded 316L stainless steel
for all wetted surfaces. Hastelloy C,
Monel 400 and Titanium are available as an option.
Standard: 0.75 inch male NPT.
Optional: 1 inch male NPT, flanges or retractable sensing
1.2 inch [30 mm]
2 inches [51 mm]
4 inches [102 mm]
6 inches [152 mm]
9 inches [229 mm]
12 inches [305 mm]
18 inches [457 mm]
Customer specified lengths are available as an option.
Standard: -40° to +350° F [-40° to +177° C]
Optional: -100° to +500° F [-73° to +260° C] or -100° to
+850° F [-73° to +454° C]
Operating Pressure: To 3500 psig [240 bar(g)]
Control CircuitOperating Temperature: -40° to +140° F [-40° to +60° C]
Input Power: Field selectable 115 ± 15 Vac or 230 ± 30 Vac,
50/60 Hz; 21 to 28 Vdc or 18 to 26 Vac; 7 watts maximum.
Relay Contacts: Field configurable dual SPDT or single DPDT
rated 6 amps at 115 Vac, 240 Vac or 24 Vdc. Hermetically
sealed relays are available as an option.
Output Signal: Analog DC voltage related to flow or
level/interface signal and proportional to temperature.
Electrical Connection: 1 inch female NPT
Remote Configuration: Available as an option with customer
specified interconnecting cable length.
Optional N.I.S.T. Flow Calibration ServicesFactory N.I.S.T. calibration in air or water is available as
an option for customer specified setpoint(s) or a flow curve
based on the media ranges specified above.