Flow Level



Flowline offers the best non-contact level switch, level switch package and level switch sensor solutions for your tank level requirements.

Non-Contact Level Switches

The non-contact liquid level switches are the perfect level switch or level control solution for corrosive, sticky and dirty liquids.

Level Switch Packages

The liquid level switch packages are offered in a variety of level switch and level control configurations, materials and classifications.

Level Switch Sensors

The liquid level switch sensors are offered in a range of technologies including ultrasonic, vibration, optic and buoyancy for your applications.



Range: LU77: 4" to 9.8' (10cm to 3m)
LU74: 8" to 18.0' (20cm to 5.5m)
LU78: 8" to 26.2' (20cm to 8m)
Repeatability: 0.25" (6.35mm)
Dead band: LU77: 4" (10cm)
LU74/78: 8" (20cm)
Beam width: LU77: 2" (5cm)
LU74/78: 3" (7.6cm)
Configuration: Push button
Memory: Non-volatile
Display type: LCD, 6-digit
Display units: Inch, cm, percent, feet or meter
LCD indication: Level and relay status
Supply voltage: 95-250 VAC
Power: 20 watts @ 120 VAC
Contact type: (3) SPDT relays
Contact rating: 60 VA, 1A maximum
Contact fail-safe: Open, close or hold last
Process temp.: F: -4° to 140° 
C: -20° to 60°
Temp. comp.: Automatic
Ambient temp.: F: -40° to 140°
C: -40° to 60°
Pressure: MWP = 30 PSI (2 bar)
Enclosure rating: NEMA 4X (IP65)
Encl. material: Polycarbonate
Encl. hardware: Brass & stainless
Enclosure vent: Water tight membrane
Trans. material: PVDF
Conduit entrance: Dual, 1/2" NPT
Process mount: LU77: 1" NPT (1" G)
LU74/78: 2" NPT (2" G)
Mount gasket: Viton®
Classification: General purpose
Compliance: CE, RoHS



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