Discover the benefits of using a non-vented absolute pressure sensor for water level measurement in applications where venting is impractical.
In applications where venting a submersible pressure sensor is impractical, a non-vented absolute sensor offers a reliable solution for measuring water levels. This approach is particularly useful in scenarios such as deep wells, underground tanks, or remote monitoring stations where access for venting is limited. By measuring absolute pressure, which includes atmospheric pressure, these sensors eliminate the need for a separate vent tube or access point.
To accurately determine the water level using a non-vented submersible sensor, it’s necessary to compensate for the influence of atmospheric pressure on the absolute pressure reading. This is achieved by using a barometric pressure sensor, such as the DMP331, to measure the current atmospheric pressure. The DMP331, with its high accuracy of 0.25% full scale, provides a reliable reference for atmospheric pressure. By subtracting the barometric pressure reading from the absolute pressure reading of the submersible sensor, the actual pressure due to the water level can be accurately determined.
The IMSL series of submersible pressure sensors is well-suited for such applications. These sensors are designed to withstand harsh environments and offer high reliability. The IMSL-A2000-5A2-AAV-010-000, with its 2 bar absolute pressure range, can measure water levels up to 10 meters. Its stainless steel construction and Viton seals ensure compatibility with a wide range of water types, including those with some chemical content. The sensor’s non-linearity and hysteresis of 0.1% full scale provide accurate and stable readings. Additionally, its low thermal zero and span shift coefficients minimize the influence of temperature variations on the measurement accuracy.
The 4-20mA output signal from both the IMSL and DMP331 sensors can be easily integrated with various data acquisition and control systems. This allows for remote monitoring and automation of water level management. The use of a non-vented submersible sensor in conjunction with a barometric pressure sensor offers a robust and accurate solution for water level measurement in challenging installations where traditional vented sensors are not feasible. This approach simplifies installation, reduces maintenance requirements, and ensures reliable performance in diverse environmental conditions.
IMSL Non-Vented Submersible Absolute Pressure Sensor
- SKU ID: s1-imsl-30-17768
- Part No: IMSL-A2000-5A2-AAV-010-000
- Pressure Range: 2
- Units: bar
- Pressure Reference: Absolute, Non-Vented (A)
- Output Signal: 4 – 20mA, 2-wire (5)
- 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: 10
- Cable Length Units: Metres (m)
- Process Connection: G1/4 male DIN3852 with removable nose cone
- Special Requirements: Standard (000)
DMP331 Barometric Pressure Transmitter
- SKU ID: s1-dmp331-2-18009
- Part No: 111-B200-1-2-100-100-1-000
- Pressure Range: 800 to 1200 mbar abs
- Output Signal: 4-20mA (2 wire)
- Accuracy: 0.25% FS
- Electrical Connection: DIN43650A plug IP65
- Pressure Connection: G1/2 DIN3852 male
- Media Exposed Seals: FKM (standard)
- Media compatibility: SS316L diaphragm and port, FKM seals