FLT93L Flow Switch

Flow Switch Summary

The FLT93L inline type FlexSwitch for flow and temperature monitoring represents the first true technological breakthrough in thermal technology in over a decade. FCI is the only thermal manufacturer providing temperature compensation to ensure set point accuracy for process temperatures that vary up to ± 100° F. The FLT93L is easily field-configured or factory preset, providing unparalleled flexibility, accuracy and stability for all multiple process sensing and switching requirements.
 

Applications

  • Pump protection
  • Cooling water/heat exchangers
  • Drain line flow
  • Safety spray nozzle monitoring
  • Oil well system testing
  • Relief valve monitoring

Specifications

For Flow Service - Setpoint Range:
  • Water-based Liquids:
0.015 to 50 cc/sec [0.0009 to 3 lps]
  • Hydrocarbon-based Liquids:
0.033 to 110 cc/sec [0.002 to 6.6 lps]
  • Air/Gas:
0.6 to 20,000 cc/sec [0.036 to 1198 lps]

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 0.5 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. Probe complies with Canadian Electrical code requirements of ANSI/ISA 12.27.01-2011 as a single seal device.
 
FM/FMc:
  XP, Class 1, Div. 1 Groups B,C,D, T3A or T4 Ta ≤60°C
DIP, Class II/III, Div. 1, Groups E,F,G, T3A or T4 Ta ≤60°C
Nonincendive for Class I, II and III, Division 2, Groups A,B,C,D,E,F, and G, T3A or T4 -40°C ≤Ta≤60°C; hazardous (classified) locations, indoors and outdoors.
Type 4X
ATEX: Integral:                        II 2 G  Ex db IIC T4…T2 Gb
                                     II 2 D  Ex tb IIIC T135°C…T300°C Db
  Remote enclosure
  + electronics:             II 2 G  Ex db IIC T6 Gb
                                     II 2 D  Ex tb IIIC T85°C Db
  Local enclosure
  + sensor                     II 2 G  Ex db IIC T4…T1 Gb
                                     II 2 D  Ex tb IIIC T135°C…T345°C Db
 
  Pigtail version            II 2 G  Ex db IIC T4…T3 Gb
                                     II 2 D  Ex tb IIIC T135°C…T200°C Db
IECEx: Integral:                        Ex db IIC T4…T2 Gb
                                     Ex tb IIIC T135°C…T300°C Db
  Remote enclosure
  + electronics:             Ex db IIC T6 Gb
                                     Ex tb IIIC T85°C Db
  Local enclosure
  + sensor                     Ex db IIC T4…T1 Gb
                                     Ex tb IIIC T135°C…T345°C Db
 
  Pigtail version            Ex db IIC T4…T3 Gb
                                     Ex tb IIIC T135°C…T200°C Db
Optional N.I.S.T. Flow Calibration Services
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.


Flow Element

Materials of Construction: All welded 316L stainless steel for all wetted surfaces.

Process Connection: 
  • Standard: 1 inch male NPT or 0.75 inch female NPT at tee inlet and outlet
  •  
  • Optional: Flanges
Inline Tee Length: 3.375 inch [86 mm]

Operating Temperature: 
  • Standard: -40° to +350° F [-40° to +177° C]
  • Optional: -100° to +500° F  [-73° to +260° C]

  • Operating Pressure: To 3500 psig [240 bar(g)]


Control Circuit

Operating Temperature: -40° to +140° F [-40° to +60° C]

Universal AC/DC supply. Input terminals and jumpers on circut board select specific power.
 
AC 108-132V 13W, 100mA max.
AC 207-253V* 14W, 50mA max.
AC 18-28V 7W, 230mA max.
DC 21-30V 7W, 230mA max.
* AC mains preset by factory: FM & FMc as 108-132 Vac; All others as 207-240 Vac 

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.

Certification/Approvals

ATEXCECRNFM ApprovedEACIECExInmetroSIL