SENSVISION PTC 420 – An Equivalent to the BD Sensors DMK 458
The BD Sensors DMK 458 is a high-accuracy ceramic pressure transmitter designed for marine and offshore applications. It is suitable for low-pressure measurement and hydrostatic level measurement in applications including ballast tanks, loading systems, ship draught monitoring, and vessel stability systems, with nominal pressure ranges from 40 mbar to 20 bar.
The SENSVISION PTC 420 offers the same low-pressure measurement capability, capacitive ceramic sensor technology, high overpressure resistance, marine approvals, and application flexibility as the BD Sensors DMK 458, making it an ideal replacement for both new installations and existing marine systems.
The pressure transmitter DMK 458 was specifically designed for marine and offshore environments where accurate measurement, long-term stability, and resistance to vibration, temperature variation, and harsh operating conditions are essential. The SENSVISION PTC 420 is engineered to meet these same demanding requirements, delivering precise and dependable pressure and level measurement in shipbuilding and offshore applications.
Like the BD Sensors DMK 458, the SENSVISION PTC 420 uses a capacitive ceramic sensing element and is available with an optional 99.9% Al₂O₃ ceramic diaphragm for enhanced performance and media resistance. An optional CuNi10Fe1Mn copper-nickel pressure port is also available for applications requiring increased seawater resistance.
The SENSVISION PTC 420 holds approvals from major marine classification societies, including Lloyd’s Register, DNV, ABS, and CCS. It is also available in an Ex ia intrinsically safe version for hazardous areas.
Whether you are replacing an existing BD Sensors DMK 458 or specifying a high-accuracy pressure transmitter for a new marine or offshore project, the SENSVISION PTC 420 provides a dependable, cost-effective solution that delivers the performance, precision, and certification support required in demanding maritime environments.
BD SensorsTM and associated part numbers (e.g., DMP 331) are trademarks or registered trademarks of BD Sensors GmbH. Diversified Technologies is an independent distributor and is not affiliated with, endorsed by, or sponsored by BD Sensors GmbH. References to BD Sensors and associated part numbers on this website are used strictly for informational, comparative, and cross-referencing purposes to assist customers in finding functional alternatives. All trademarks are the property of their respective owners.
Further Information on the PTC 420
The SENSVISION PTC 420 has been engineered to provide the same fit, form, function, and performance as the BD Sensors DMK 458, making it an ideal replacement for existing marine installations and new OEM or offshore applications.
Key Features:
Nominal pressure ranges from 40 mbar to 20 bar
Hydrostatic level measurement ranges from 0.4 to 200 mH₂O
High-performance capacitive ceramic sensing element
Ceramic Al₂O₃ diaphragm, with optional 99.9% Al₂O₃ version
Standard accuracy of ≤ ±0.25% FSO
Optional high-accuracy version of ≤ ±0.1% FSO for nominal pressures of 0.6 bar and above
High overpressure resistance of up to 45 bar, depending on range
Excellent long-term stability of ≤ ±0.1% FSO per year
Standard 2-wire 4–20 mA output
Gauge and absolute pressure versions available
Stainless steel pressure port, with optional CuNi10Fe1Mn copper-nickel alloy port for seawater resistance
Marine certification support from Lloyd’s Register, DNV, ABS, and CCS
Vibration resistance in accordance with DNV Class B Curve 2
Available Ex ia intrinsically safe version for hazardous marine areas
Ingress protection up to IP68, depending on configuration
Designed for marine, shipbuilding, and offshore pressure and level measurement applications
The SENSVISION PTC 420 is manufactured to deliver equivalent performance, reliability, marine approval support, and installation compatibility as the BD Sensors DMK 458, allowing users to transition to the SENSVISION PTC 420 with confidence while maintaining the same level of pressure measurement accuracy, long-term stability, and offshore durability.