Consent Preferences

TLL155 Capacitive Fuel Level Sensor. Cut-To-Length and Calibrate

The TLL155 liquid level sensor is designed for use in diesel fuel tanks and is available with variable resistive, voltage or current output suitable for driving industry standard fuel gauges or connecting into PLCs.

It is supplied in standard probe lengths of 500mm or 1000mm and can be cut to length and magnetically calibrated by the end user.

Data Sheet
Installation instructions
Specification Sheet
Calibration Instructions

Liquid Types

Non-conductive Fuels: Diesel and Kerosene


Supply Voltage: 9- 36 VDC with 80 V over protection
Supply Current: 15mA @ 12 VDC + output load.

Signal Output: Any values between 3-500Ω or 500-3Ω (3Ω Steps) Resolution: 3Ω Max dissipation: 250mW
Current::1-20mA, 4-20mA Resolution: 20μA Max Load: 250Ω
Voltage:: 12VDC system: Any values between 0-5V & 5-0V
24VDC system: Any values between 0-10V & 10-0V Resolution:
Max Load: 10mA source (dependent on min supply voltage) For
probe lengths 300mm and above:
Accuracy:: Voltage & Current: ±2% of probe length @ 20oC in diesel
Resistance: +2% rounded up to the nearest multiple of 3
-2% rounded down to the nearest multiple of 3
±0.5Ω is added to empty and full tolerance.


Probe: 316 Stainless Steel
Wetted Materials::Nylon 66, Aluminium Alloy 6063, FKM
Light Tube:: Polycarbonate for LED calibration Nylon 66
End Plug:: Standard 500mm & 1000mm for cutting to length by the customer.
Probe Length:: Standard 500mm & 1000mm for cutting to length by the customer.

Environmental Ratings

Ingress:Sensor housing & connector IP67
Max Pressure: 1 bar
Temperature Range: -20°C to +85°C
Weight: 300 g (1000mm long sensor)
EMC: EN ISO13766-1:2018
Vibration: 500mm sensor type tested to 6.3grms toBS EN 60068-2-64:2008
Shock: 500ms-2 11ms to BS EN 60068-2-27:2001

Drop Test

1M to concrete surface.


Alarm Output: Switch to ground, close on fall at 12% of active length Max 100mA
Customer empty & Full points: Specific empty and full levels can be calibrated within the allowable measurement range of the probe.
Connections: Integral 4 Way Tyco Superseal connector.

Standard part numbers

Add-on Accessories

S/K155 Shortening & Calibration Kit
Nylon end cap, spacer & calibration magnet.

C/K16 Mating Connector Kit
C/K16 kit consisting of mating Tyco 4-way AMP 1.5
Superseal Connector (282088-1), 4 × 1.5 receptacle terminals (183025-1) & 4 x wire seals (281934-2).
Wire range 0.75mm2 to 1.5mm2

Product Inquiry - TLL155

    Revised 08-28-2023