Description
DEIF
DQ144-C
RPM METER
METER RANGE: 168-0-168 RPM
100061625 70
2041300120 A
±10V
503701
The DEIF DQ144-C is a panel-mounted analogue RPM meter designed to display engine rotational speed in marine control and monitoring applications. Accepting a ±10V input signal, it provides a clear, direct readout across a bi-directional range of 168-0-168 RPM, making it well suited to reversible or controllable-pitch propulsion systems where ahead and astern shaft speed must be monitored from a central control station. As part of a Marine Control System, this instrument plays a critical role in engine room and bridge console arrangements, giving operators immediate visual confirmation of shaft or engine speed during manoeuvring, loading, and transit operations.
Key Features
✓ Bi-directional RPM display with a meter range of 168-0-168 RPM, suitable for monitoring both ahead and astern rotational speed from a single instrument.
✓ Operates on a ±10V analogue input signal, compatible with standard signal outputs from engine governors, speed transducers, and DEIF control units — subject to system configuration confirmation.
✓ DQ144-C format indicates a 144mm square panel-cut instrument, typical of engine room console and bridge control panel installations in merchant and offshore vessel builds.
✓ Designed for integration within DEIF marine automation and engine control architectures, including propulsion monitoring panels and machinery control consoles — exact system compatibility subject to confirmation.
✓ As a direct-reading analogue instrument, it requires no software configuration for basic display function, supporting straightforward replacement and recommissioning in existing panel cutouts.
Marine Applications
✓ Main propulsion monitoring on merchant vessels, tankers, and bulk carriers where engine or shaft RPM must be continuously displayed at the control station.
✓ Bridge manoeuvring consoles and integrated navigation control systems on vessels with controllable-pitch propellers or reversible main engines.
✓ Engine room local control panels where real-time RPM indication supports engineer oversight during startup, load changes, and shutdown sequences.
✓ Offshore support vessels and platform supply vessels where precise propulsion speed feedback is required for dynamic positioning and close-quarters manoeuvring.
✓ Ferry and RoRo vessel control systems where frequent ahead/astern transitions demand a reliable, clearly readable bi-directional RPM display.
Why Marine Engineers Choose
The DEIF DQ144-C is a well-established instrument within DEIF’s marine automation portfolio, valued for its straightforward analogue readout, standard panel format, and compatibility with ±10V signal sources commonly found across commercial propulsion control installations. Its bi-directional scale makes it a practical choice wherever reversible speed indication is required at a glance.
Ideal For
Merchant vessels, tankers, bulk carriers, offshore support vessels, ferries, RoRo ships, and any commercial or industrial marine platform utilising DEIF engine control or propulsion monitoring systems requiring panel-mounted RPM indication.
Technical Support & Compliance
Technical assistance is available to support remote troubleshooting, onboard diagnostics, replacement commissioning, and integration into existing DEIF control architectures. Retrofit and upgrade guidance can be provided where the DQ144-C is being installed into a modified or updated control console. Compatibility with a specific vessel’s control system is subject to confirmation — buyers are advised to share nameplate photographs, existing part numbers, panel drawings or wiring diagrams, the control system model and software version where applicable, and vessel name or IMO number to allow accurate cross-referencing prior to supply.
