T/LL400 Extended Temperature Range Liquid Level Sensor
Vertically mounted liquid level sensor for oils, fuels and coolants in -40°C to +125°C. Voltage output with integrated connector options or flying leads.
*Alternative Outputs are available on request
The T/LL400 Liquid Level Sensor is an advanced capacitance sensor that continuously monitors liquid level providing a configurable voltage output in the range 0-10 VDC. Compact and robust this sensor is designed to provide accurate and repeatable liquid level data. It is ideal for extended temperature range applications such as monitoring engine oil or coolant in relatively shallow, sumps or tanks.
Documents
Data Sheet
Liquid Types
Liquids compatible with the construction materials, typically engine and hydraulic oils, fuels or coolants.
Dimensions
Length: Min. 80mm, Max.300mm.
Thread: ½” BSPT, ½” BSPP, ½” NPTF, 3/8” NPTF, M14, M18 and M22.
Materials
Header: 316 stainless steel
Stem: 316 stainless steel
Internal electrode: PTFE sheathed stainless steel
End plug: PTFE
Wetted seals: Fluorosilicone (FVMQ)
Connector enclosure: 30% glass filled nylon66(where fitted).
Leads: XLPE wires sheathed in nylon 6 conduit (where fitted). Back-shell and connector dependent on series
Electrical
Supply Voltage: 9 to 36 VDC.
Supply Current: 10mA @ 12VDC+ output load.
Supply Protection: 80 VDC over voltage. Reverse polarity.
Signal Output: Voltage source. 2 kΩ min load. 10 mV resolution.
Range 0 to 5 VDC@ 12 VDC or 24 VDC.
Range 0 to 10 VDC @ 24 VDC.
Output Protection: Short circuit to supply. Short circuit to ground.
Alarm Output: Switch to ground. Max 100 mA. Default low level alarm at 12% of active length. Minimum 23 mm distance from end of probe. Minimum 35 mm from datum.
Environmental Ratings
Ingress: Liquid side – IP68, Connector side – IP67.
Operating temp: -40ºC to 125ºC.
Max tank pressure: 1 bar.
EMC: Type approval in accordance with EN ISO 13766:2006.
Vibration: 15.3 grms BS EN 60068-2-4:1995.
Shock: 500 ms-2, 6 ms, BS EN 60068-2-27:1993.
Weight: 0.16 kg (for 300 mm version)
