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FCI FlexSwitch - Model FLT93S -Level Switch
The FLT93S insertion type FlexSwitch for level 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 requirements.
- Interface and sump level detection
- Interface/sump level detection in separation vessels
- Agitation detection
- Interface/level detection in settling vessels
- Foam or sediment level control
- Liquid/resin interface detection
For Level/Interface Service:
Accuracy: ± 0.25 inch [± 6.4 mm]
Repeatability: ± 0.125 inch [± 3.2 mm]
For Temperature Service:
Accuracy: ± 2° F [± 1° C]
Repeatability: ± 1° F [± 0.6° C]
Response Time: As low as 3 seconds
Enclosure: NEMA 4X/IP66 Rated. Standard: Polyester power coated aluminum, with single 1" NPT conduit port. Optional: Stainless steel. Optional: Dual-conduit port, aluminum with 1/2" NPT or M20 metric conduit ports.
Compliances and Agency Approvals: FM, FMc, ATEX, IECEx, EAC/TR CU, Inmetro. CE mark. PED, CRN.
Meets EC directives for EMC and LVD. Complies with Canadian Electrical code requirements of ANSI/ISA 12.27.01-2011 as a single seal device.

Factory 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.
Monel 400 and Titanium are available as an option.
Process Connection:
- Standard: 0.75 inch male NPT.
- Optional: 1 inch male NPT, flanges or retractable sensing element.
- 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: -4° to +350° F [-20° 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.
- ATEX
- CE (Surface Mount Electronics)
- FMc (Surface Mount Electronics)
- EAC/TR CU
- IECEx
- IECEx Test Report
- Inmetro
- SIL 2 (Surface Mount Electronics)
- SIL 2 (Through-Hole Electronics)
- SIL (TUV)
