TLL401 Capacitance Sensor
The T/LL401 Liquid Level Sensor is an advanced capacitance sensor that continuously monitors liquid level providing a configurable current output within the range 0-20 mA, 4-20 mA is typically used. 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. 80 mm, Max. 300mm
Threads:: ½ “BSPT, ½ “BSPP, ½ NPTF, ⅜” 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 nylon 66 (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: 10 mA @ 12 Vdc + output load
Supply Protection: Output: 80 VDC over voltage. Reverse polarity.
Signal Output: Current source. 250 Ω max load. 20 µA resolution.
Within range 0 to 20 mA, e.g. 4-20mA
*Due to protective components, max output load is reduced below 12Vdc.
Output Protection: Short circuit to supply. Short circuit to ground.
Alarm Output: Switch to ground. Max 100mA. Default low level at 12% active length
Minimum 23mm from end probe or 35mm from datum.
Environmental Ratings
Ingress: IP67 with mating connector above tank surface(excluding tank venting hole).
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).
