
This submersible level sensor provides accurate and reliable water level measurement in BMS applications in commercial office buildings, with a 0 to 6 mH2O gauge pressure range and a 0 to 10V output signal.
This submersible level sensor, part of the IMSL series, is a cost-effective solution for measuring the water level in tanks connected to building management systems (BMS) in commercial office buildings. It utilizes silicon strain gauge technology to accurately measure hydrostatic pressure over a range of 0 to 6 mH2O gauge (equivalent to 0 to 60 kPa or approximately 8.7 psi), providing a corresponding 0 to 10V output signal. This makes it ideal for integration with BMS controllers, data loggers, and other monitoring systems commonly used in modern commercial buildings.
The IMSL sensor’s submersible design allows for direct installation in the water tank, eliminating the need for external piping or complex mounting arrangements, which is particularly beneficial in the often confined spaces found in office building plant rooms. Its robust construction and high-quality materials ensure reliable performance and long-term stability, even in demanding environments. The silicon strain gauge technology offers excellent accuracy and linearity, making it suitable for various applications in commercial office buildings, including:
- Water level monitoring and control in HVAC systems: The IMSL sensor can be used to monitor water levels in expansion vessels, calorifiers, and other HVAC equipment, ensuring optimal system performance and preventing costly downtime.
- Potable water tank level monitoring: The sensor can be used to monitor water levels in rooftop or basement storage tanks, ensuring a consistent water supply throughout the building and providing early warnings of potential leaks or supply interruptions.
- Greywater and rainwater harvesting systems: The IMSL sensor can be used to monitor water levels in greywater and rainwater harvesting tanks, enabling efficient water recycling and reducing overall water consumption.
- Water leak detection: By monitoring water levels in sumps or collection points, the IMSL sensor can be used to detect leaks and trigger alarms, preventing water damage and ensuring the safety of building occupants.
The IMSL series offers a reliable and cost-effective solution for water level measurement in BMS applications within commercial office buildings. Its submersible design, wide pressure range, and compatibility with standard BMS signals make it a versatile choice for various building automation and control systems.

IMSL Low Cost Water Tank Level Sensor
- SKU ID: s1-imsl-30-26728
- Pressure Range: 0 to 6
- Units: mH2O
- Pressure Reference: Gauge, Vented (G)
- Output Signal: 0 – 10V, 3-wire (7)
- Non-Linearity and Hysteresis: 0.1% FS (standard) (A)
- Thermal Zero Shift: 0.02% FS per °C (2)
- Thermal Span Shift: 0.01% FS per °C
- Housing Material: Stainless Steel 316L
- Diaphragm Material: Stainless Steel 316L
- Media Exposed Seals: Viton (standard)(V)
- Cable Type: PUR (A)
- Cable Length: 7
- Cable Length Units: Metres (m)
- Process Connection: G1/4 male DIN3852 with removable nose cone
- Special Requirements: Standard (000)