Seawater compatible marine bronze level sensor with digital display and relay outputs for for tidal monitoring and controlling pumps and valves in harbour environments.
The SWL submersible level sensor, paired with the SRP-N118 digital display and relay unit, offers a robust and reliable solution for monitoring and controlling seawater levels in harbor environments. This system is particularly well-suited for applications such as automated pump control, where the rising tide can be used to trigger the operation of a pump for tasks like filling reservoirs or flushing systems.
The SWL sensor is constructed from marine bronze (CA104) with a ceramic alumina diaphragm, making it highly resistant to the corrosive effects of seawater. This ensures long-term durability and accurate measurement even in harsh marine conditions. The sensor is designed for submerged operation and can be lowered into a tube or pipe to measure the hydrostatic pressure of the seawater, providing a precise indication of the water level. With a measurement range of 10 meters of water head (mH2O), it is suitable for a variety of harbor depths and tidal ranges. The sensor features a vented gauge pressure reference, allowing it to accurately measure the pressure relative to the atmospheric pressure, which is essential for tidal measurements.
The sensor’s 4-20mA output signal provides a standard industrial interface for easy integration with the SRP-N118 display and relay unit. This unit offers a clear digital display of the seawater depth, allowing for local monitoring of the tide level. The two voltage-free relay outputs can be configured to activate at specific water depths, enabling automated control of pumps or other equipment. This functionality is particularly useful for tidal pumping applications where the pump needs to be switched on or off at certain tide levels.
The use of a submersible pressure sensor in a tube offers several advantages for harbor applications. It minimizes the sensor’s exposure to debris and marine growth, which can affect accuracy and longevity. The tube also provides physical protection for the sensor and simplifies installation and maintenance.
This system is ideal for a wide range of harbor installations, including:
- Tidal pumping stations: Automatically activate pumps to fill reservoirs or flush systems with incoming tides.
- Dockside level monitoring: Monitor water depth at docks and piers for safe berthing and navigation.
- Seawater intake systems: Control the intake of seawater for industrial processes or desalination plants.
- Marinas and boatyards: Monitor water levels for optimal boat storage and maintenance.
The combination of the SWL sensor’s robust construction, the SRP-N118‘s display and relay capabilities, and the flexibility of installation in a tube provides a comprehensive solution for a variety of seawater level monitoring and control needs in harbor environments.
SWL Seawater Level Sensor
- Part No: SWL-G1000-5A4AAV-015-000
- Pressure Range: 10
- Units: mH2O
- Range Type: Gauge / Vented (atm to +P)
- Output Signal: 4-20mA (2wire)
- Non-Linearity and Hysteresis: 0.25% FS
- Thermal Zero Shift: 0.04% FS/deg °C
- Cable Type: PUR
- Cable Length: 15
- Cable Length Units: Metres (m)
- Housing Material: Marine bronze CA104
- Diaphragm Material: Ceramic Alumina (Al2O3)
- Media Exposed Seals: Viton
- Process Connection: G1/4 male DIN3852 with removable nose cone
SRP-N118 Digital Display & Relay Outputs
- Part No: SRP-N118-1821-1-3-081
- Outputs: Relay x2 (21)
- Power Supply Input: 24V ac/dc (3)
- Optional Extras: Operating Temperature Range -20 to +50degC