Description
DEIF
DLQ144-PC-NB
RPM INDICATOR
ORDER NO.: 400048578.10
4150110008A
INDICATOR RANGE: ASTERN 150-0-150 AHEAD
INPUT: ±10V
LOAD: >10K OHM
The DEIF DLQ144-PC-NB is a panel-mount RPM indicator designed for continuous shaft speed monitoring across both ahead and astern directions, with a symmetrical display range of 150-0-150. Operating on a ±10V analogue input signal with a load impedance greater than 10K OHM, this instrument provides clear, real-time rotational speed feedback within marine engine control and propulsion management systems. As a critical component in the Marine Control System category, it supports safe and accurate engine telegraph response verification, manoeuvring control, and propulsion performance oversight onboard a wide range of commercial and industrial vessels.
Key Features
✓ Bidirectional RPM display with an ASTERN 150-0-150 AHEAD range, enabling clear ahead and astern shaft speed readout from a single instrument.
✓ Analogue input of ±10V with a load impedance exceeding 10K OHM, as specified; additional electrical ratings and response time are subject to confirmation against the full product datasheet.
✓ DLQ144-PC-NB panel-mount format suits integration into engine control consoles, bridge control panels, and local engine room instrumentation boards — mounting dimensions and cutout requirements should be confirmed prior to installation.
✓ Designed for use within DEIF instrumentation and control architectures; compatibility with specific DEIF controllers, telegraph systems, or third-party panels is subject to confirmation based on the site configuration.
✓ Replacement of this indicator should be carried out with reference to the original order number 400048578.10 and system drawings to ensure correct signal wiring, scaling, and display calibration are maintained.
Marine Applications
✓ Engine control rooms on merchant vessels, tankers, bulk carriers, and container ships requiring continuous propulsion shaft speed monitoring during manoeuvring and sea passage.
✓ Bridge-controlled propulsion systems where ahead and astern RPM indication is required for safe port approach, berthing, and departure operations.
✓ Offshore support vessels and platform supply vessels with dynamic positioning systems that rely on accurate shaft speed feedback for propulsion load management.
✓ Ferry and ro-ro vessel engine rooms where rapid direction changes demand reliable bidirectional RPM display during frequent stop-start manoeuvring cycles.
✓ Naval auxiliaries and workboats fitted with DEIF or compatible analogue instrumentation panels requiring panel-replacement or upgrade of existing RPM indicators.
Why Marine Engineers Choose
Marine engineers specify the DEIF DLQ144-PC-NB for its straightforward analogue interface, bidirectional display capability, and panel-mount form factor that integrates directly into existing engine control consoles without complex signal conditioning — making it a practical and reliable choice for both original fit and like-for-like replacement applications.
Ideal For
Merchant vessels, tankers, bulk carriers, container ships, offshore support vessels, ferries, ro-ro vessels, workboats, and any commercial or industrial vessel fitted with analogue RPM instrumentation within a marine engine control or propulsion management system.
Technical Support & Compliance
Technical assistance is available to support remote troubleshooting, onboard fault diagnosis, testing and commissioning, panel replacement, and retrofit or upgrade projects involving this RPM indicator. Compatibility with existing control panels, signal sources, and propulsion systems is subject to confirmation. To verify suitability and ensure correct supply, buyers are advised to share nameplate photographs, the original order number, relevant panel or system drawings, the control system model and software version where applicable, and vessel name or IMO number. All technical claims regarding fit, function, and compatibility are subject to confirmation against the specific installation.
