Submersible IP68 diesel level sensor with FEP cable for internal installation in fuel tanks. 200 mbar pressure range, 4-20mA output, and high accuracy.
The IMSL is a submersible level sensor designed for the continuous measurement of diesel fuel levels within storage tanks. This sensor utilizes hydrostatic pressure to determine the fuel level, offering a reliable and accurate solution for monitoring fuel inventory. The IMSL is particularly well-suited for applications requiring internal installation within the tank, thanks to its robust IP68-rated construction that ensures complete protection against prolonged submersion in liquids. This makes it ideal for use in potentially harsh or demanding environments.
A key feature of the IMSL is its FEP cable. FEP (fluorinated ethylene propylene) is a type of fluoropolymer known for its exceptional chemical resistance, particularly to hydrocarbons like diesel fuel. This ensures the cable’s long-term integrity and reliability, even when continuously exposed to the fuel. The choice of FEP also makes the cable suitable for a wide range of operating temperatures, contributing to the sensor’s versatility in diverse applications.
The IMSL comes with a standard 5-meter FEP cable, providing sufficient length for most standard tank installations. This generous cable length allows for flexible positioning of the sensor within the tank to achieve optimal measurement accuracy. The sensor’s compact design further enhances its adaptability to various tank sizes and configurations.
With an accuracy of 0.1% FS linearity, the IMSL delivers precise and consistent level measurements. This high level of accuracy is crucial for maintaining accurate fuel inventory records and optimizing fuel management processes. The sensor also exhibits a low thermal zero shift of 0.02% FS/degC, ensuring measurement stability even with fluctuating temperatures within the tank. This stability is essential for reliable performance in environments where temperature variations are common.
The IMSL‘s 4-20mA current output allows for easy integration with various industrial control systems, including PLCs, SCADA systems, and data loggers. This compatibility simplifies the process of incorporating the sensor into existing monitoring and automation infrastructure. The 2-wire configuration of the 4-20mA output further simplifies installation and reduces wiring costs.
This sensor finds application in diverse settings, including:
- Fuel storage tanks in industrial plants: Monitoring fuel levels for generators, boilers, and other critical equipment.
- Bulk fuel storage terminals: Accurately measuring fuel inventory for distribution and logistics.
- Vehicle fleet refueling depots: Managing fuel consumption and ensuring efficient refueling operations.
- Marine vessels: Monitoring fuel levels in tanks onboard ships and boats.
The IMSL‘s combination of accuracy, durability, and compatibility makes it a versatile and reliable solution for a wide range of diesel fuel level measurement applications.

IMSL IP68 Diesel Level Sensor
- Pressure Range: 200 mbar g
- Output Signal: 4-20mA (2wire)
- Cable Type: FEP
- Length of Cable (metres): 5
- Accuracy: 0.1% FS linearity (standard)
- Thermal Zero Shift: 0.02% FS/degC (standard)