Switch-Tek™ LU10 Ultrasonic Level Switch





CSA approved for hazardous environments, the intrinsically safe ultrasonic point level switch provides reliable liquid level detection of chemical, solvent, hydrocarbon and petroleum based liquids with a 1A relay output. Media examples include fuel, acetone and hydrochloric acid. The submersible polypropylene or PFA liquid level sensor is universally mounted through the tank wall or inside the tank as a high level alarm or low level alarm.


 CSA approved intrinsically safe for use in hazardous environments

 Submersible polypropylene or PFA Teflon® sensor and cable for corrosive liquids

 60VA relay selectable NO or NC via power supply wiring polarity

 Compatible with Smart Trak and Switch-Pak installation fittings


Orientation: Universal
Accuracy: ± 1mm in water
Repeatibility: ± 0.5mm in water
Supply voltage: 12-36 VDC
Consumption: 25 mA maximum
Contact type: (1) SPST relay
Contact rating: GP: 60 VA
IS:    32 VDC @ 0.5A
Contact output: Selectable NO / NC
Process temp.: F: -40° to 176°
C: -40° to 80°
Pressure: 150 psi (10 bar) @ 25º
C, derated @ 1.667
psi (0.113 bar) per ºC
above 25º C
Sensor rating: -1XX5: NEMA 6 (IP68)
-2XX5: NEMA 4X (IP65)
Sensor material: -1XX5: PP
-2XX5: PFA
Cable jack. mat.: -1XX5: PP
-2XX5: PFA
Cable type: 4-conductor, #22 AWG,
Cable length: 10' (3m)
Process mount: 3/4" NPT (3/4”" G / Rp)
Mount. gasket: Viton®
Classification: Intrinsically safe
Certificate: CSA, LR 79326
Compliance: CE
Approvals: Class I, Groups A, B, C
& D; Class II, Groups E,
F & G; Class III
Parameters: Vmax = 32V, Imax = 300
mA, Pmax = 1.3W, Ci =
0 µF, Li = 0 µH


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