Description
DEIF
TYPE: DQ48-X
RPM METER
0-1000 RPM
ART.NO: 0051G018203
ORDER NO: 101005621.10
RANGE: 4..20MA DC
SCALE: 0..1000RPM
PROTECTION: IP52
The DEIF DQ48-X is a panel-mount analogue RPM meter designed to display engine rotational speed from a 4–20mA DC signal input, with a calibrated scale of 0 to 1000 RPM. As part of the DEIF instrumentation range, it serves as a direct visual indicator within marine control and monitoring systems, providing engine room and bridge operators with a clear, real-time readout of shaft or engine speed. Rated to IP52, it is suited to the demanding environments found aboard commercial and working vessels. Within the broader Marine Control System category, it plays a critical role in engine management, propulsion monitoring, and machinery supervision.
Key Features
✓ Analogue RPM meter with a 4–20mA DC input signal range and a calibrated display scale of 0 to 1000 RPM, enabling accurate engine speed visualisation.
✓ IP52 ingress protection rating, providing resistance to dust and light water contact — appropriate for protected panel and control cabinet installations aboard vessels.
✓ DQ48-X format is consistent with DEIF’s 48mm panel instrument series, compatible with standard cutout dimensions typical of marine switchboard and control panel installations — subject to confirmation for specific panel configurations.
✓ Designed to integrate with DEIF engine control and monitoring systems as well as third-party control panels accepting standard 4–20mA analogue signal loops — system compatibility subject to confirmation.
✓ Straightforward panel replacement instrument, suitable for like-for-like substitution during planned maintenance or fault rectification, minimising downtime in engine room control systems.
Marine Applications
✓ Main engine and auxiliary engine speed monitoring on cargo vessels, tankers, bulk carriers, and offshore support vessels.
✓ Propulsion control panels and local engine control stations where analogue RPM indication is required alongside other instrumentation.
✓ Generator set control panels where engine speed must be continuously monitored to ensure stable frequency output and load management.
✓ Thruster and shaft management systems on platform supply vessels, tugs, and dredgers requiring continuous rotational speed display.
✓ Retrofit and upgrade projects on older tonnage where existing analogue instrumentation is being refurbished or replaced with DEIF-compatible components.
Why Marine Engineers Choose
DEIF instrumentation is well regarded in the marine industry for reliability, signal accuracy, and compatibility with a wide range of engine control architectures. The DQ48-X offers a straightforward, robust solution for RPM indication without the complexity of digital displays, making it a practical choice for engine room panels where durability and readability under operational conditions are priorities.
Ideal For
Cargo ships, tankers, bulk carriers, offshore support vessels, platform supply vessels, tugs, ferries, and any commercial or working vessel where panel-mounted analogue engine speed indication is required within a DEIF or compatible marine control system.
Technical Support & Compliance
Technical assistance is available to support remote troubleshooting, onboard diagnostics, testing and commissioning, component-level repair assessment, and retrofit or system integration projects involving this instrument. Guidance on signal loop wiring, panel cutout dimensions, and compatibility with existing DEIF or third-party control systems can be provided — subject to confirmation based on the specific installation. To confirm suitability and compatibility, buyers are encouraged to share nameplate photographs, the full part number and order number, panel or system drawings, the control system model and software version where applicable, and vessel name or IMO number along with the intended scope of supply or replacement.
