Ensure safety in your ship’s cargo tanks with this intrinsically safe, marine-approved pressure transmitter. Accurate and reliable measurement of inert gas pressure in hazardous environments.
The DMP 457 pressure transmitter is a specialized instrument designed for the demanding conditions of inert gas (IG) systems on ships. These systems play a crucial role in preventing explosions and fires in cargo tanks that carry flammable or volatile substances. The DMP 457’s intrinsically safe design and marine certifications ensure reliable operation and compliance with stringent safety regulations in these hazardous environments.
This particular model features a compound pressure range of -10 to 30 kPa gauge. This means it can accurately measure both positive and negative pressures relative to atmospheric pressure. This capability is essential in IG systems, where pressures can fluctuate below atmospheric pressure during tank venting or inerting operations. The ability to monitor negative pressures helps prevent the ingress of air and maintain the inert gas blanket, ensuring the safety of the cargo and the vessel.
The DMP 457 utilizes a G1/2 male process connection, a standard thread size for pressure instrumentation in many industrial applications, including marine environments. This threaded connection provides a secure and leak-tight seal, crucial for maintaining the integrity of the IG system. The transmitter outputs a 4-20 mA current signal, a widely used standard in shipping, allowing for easy integration with existing monitoring and control systems on the ship. The DIN plug electrical connection further enhances compatibility and simplifies installation.
The intrinsically safe design of the DMP 457 is paramount in hazardous areas where flammable gases or vapors may be present. This design ensures that the transmitter cannot produce enough electrical energy to ignite a flammable atmosphere, even under fault conditions. This is achieved through various techniques, such as limiting the electrical current and voltage levels within the device. The marine certifications obtained by the DMP 457 demonstrate its suitability for use in the harsh conditions encountered at sea. These certifications typically involve rigorous testing to ensure the transmitter can withstand vibrations, temperature variations, humidity, and exposure to saltwater, all common factors in marine environments.
DMP 457 Compound Range Pressure Transmitter For Ship Use
- SKU ID: s1-dmp457-91-18329
- Pressure Range: -10 to +30
- Units: kPa
- Range Type: Compound Gauge (-P1 to +P2)
- Output Signal: 4-20mA, ATEX / IECEx IS, (2 wire)
- Accuracy: 0.35% FS 0.4 bar and above, 0.5% FS below 0.4 bar
- Electrical Connection: DIN-43650 plug IP65 (for 4-6mm cable)
- Process Connection: G1/2 DIN3852
- Media Exposed Seals: FKM