Marine fenders play a crucial role in protecting vessels and structures during berthing and mooring operations. Accurately monitoring the internal pressure of these fenders is vital to ensure optimal performance and prevent damage. The SWL pressure sensor, coupled with the SRP-N118 wall-mounted display, offers a reliable and robust solution for measuring and displaying fender pressure in demanding marine environments.
The SWL series pressure sensor is specifically designed for compatibility with seawater, featuring a marine bronze housing (CA104) that resists corrosion. This makes it ideal for deployment within a fender exposed to a mixture of air and seawater. The sensor’s IP68 rating ensures complete protection against dust and prolonged immersion in water, further enhancing its suitability for this application.
A key consideration when measuring pressure in a fender is the potential for pressure spikes during impact. While the nominal pressure range may be 0-100 kPa, the SWL sensor can withstand pressures beyond this range, providing a crucial safety margin. This overpressure protection helps prevent damage to the sensor and ensures reliable operation even under challenging conditions.
The vented TPE cable used for electrical connection is another important feature for this application. The TPE material itself is highly resistant to seawater, oils, and chemicals, ensuring the cable’s long-term integrity in harsh marine environments.
The SRP-N118 display provides a clear and highly visible readout of the fender pressure. Its large, red LED digits are easily readable even from a distance or in low-light conditions. The display’s IP65 rating offers protection against dust and water jets, making it suitable for installation in a protected location on the ship. The RS485 communication interface allows for remote monitoring and integration with other shipboard systems if required.
This combination of the SWL pressure sensor and SRP-N118 display is well-suited for a variety of marine fender applications, including:
- Ship-to-ship berthing: Monitoring fender pressure during the transfer of cargo or passengers between vessels.
- Berthing at quays and jetties: Ensuring optimal fender pressure to prevent damage to both the vessel and the dock.
- Offshore platforms: Monitoring fender pressure on platforms to protect against impacts from supply vessels or other marine structures.
SWL IP68 Sea Water Pressure Sender
- Part No: SWL-G1000-5A4-BAV-010-000
- Pressure Datum: Gauge
- Pressure Range: 0 – 100 kPa
- Output: 4 – 20mA / 2-wire
- Accuracy (Non-linearity): <±0.25% / FS (BFSL)
- Accuracy (Thermal Zero Shift): <±0.04% / FS / °C
- Electrical Connection: Vented TPE Cable (Price per mtr)
- Housing Material: Marine Bronze CA104
- Seal Material: Viton
- Cable Length (enter in mtrs): 10 metre TPE
- Special Code: No Special Requirements
- Process Connection: G 1/4″ male
- Diaphragm Material: Aluminium Oxide 96% (Ceramic Al2O3)
- Media Temperature: -20 to +60°C non freezing
- Storage Temperature: -20°C to +70°C
- Compensated Temperature: 20°C ± 25°C
- Supply Voltage: 9 – 32 V dc
SRP-N118 Wall Mounted Display
- Part No: SRP-N118-1800-1-1-001
- Number of Outputs: No Outputs
- Type of Outputs: No Outputs
- Power Supply: 24V DC ±15% not separated
- Options: No Options
- Display: Red LED 4 x 20mm High, -999 to +9999 + decimal point
- Transducer Power Supply: 24 V DC +/-15% max.100 mA
- Communications interface: RS 485, 8N1 and 8N2, 1200 bit/s – 115200 bit/s, Modbus RTU
- Operating Temperature: 0 – 50°C
- Case Style: Wall Mounted
- Case Dimension: 110 x 80 x 67mm (excluding cable glands)
- IP Rating: 65
- Case Material: ABS + Glass Fibre