Description

DEIF DLQ144-PC-NB Product Description

Product Overview

DEIF DLQ144-PC-NB is an analog RPM meter / tachometer indicator from the DEIF Norcontrol instrumentation family, designed to provide direct visual indication of rotational speed for engines, propulsion shafts and other rotating machinery. Unlike PLC or DCS I/O modules, the DEIF DLQ144-PC-NB is a panel-mounted measurement and display instrument that converts an analog speed signal into an intuitive pointer indication. Available product records identify configurations using a ±10 V input, while marine references show ahead/zero/astern RPM scales for propulsion applications.

The DEIF DLQ144-PC-NB is particularly suited to marine engine-control and machinery-monitoring panels where operators need an immediate, continuously visible indication of shaft or engine speed. Its 144 mm-class panel format allows integration into existing instrument consoles, bridge control stations and engine control rooms. The unit can serve as the local speed-display element alongside DEIF Norcontrol automation, engine controllers and other shipboard monitoring equipment.

Technical Specifications

The exact DLQ144-PC-NB specification varies with the ordered scale and application. A documented marine configuration specifies 10…0…10 V input, >94 Ω load, 24 VAC/DC supply and 1113150024A, while another listing identifies a 0–100 RPM version. Therefore, the scale and electrical configuration should be checked against the unit nameplate before replacement.

Main Features and Advantages

Direct Analog RPM Indication

The primary function of DEIF DLQ144-PC-NB is to provide a clear, continuously visible indication of rotational speed. The pointer-type display allows operators to understand engine or shaft speed immediately without navigating an HMI screen or interpreting a digital value.

Ahead / Zero / Astern Display

Marine configurations can use a 150–0–150 RPM scale, allowing both ahead and astern rotation to be displayed on the same instrument. This is particularly valuable for propulsion control, maneuvering and engine-room operation where direction and speed must be observed simultaneously.

DLQ144-PC-NB

Analog Signal Compatibility

The documented configuration accepts a 10…0…10 V analog input, allowing the tachometer to interface directly with a compatible speed-transducer or control-system analog output. This simplifies integration into established Norcontrol panels without necessarily requiring a separate signal converter.

Panel-Mount Industrial Construction

The 144 mm panel format is intended for installation in machinery consoles and control panels. Its physical format makes it particularly useful for replacement projects where maintaining the existing instrument-panel arrangement is important.

Easy Local Observation

For engine-room and bridge personnel, a dedicated analog meter provides an immediate indication of whether the machinery is accelerating, operating at the commanded speed, slowing down or reversing. This is especially useful during startup, shutdown and maneuvering operations.

Replacement Advantage

For legacy DEIF Norcontrol systems, DLQ144-PC-NB can provide a practical like-for-like replacement path. Maintaining the existing panel instrument and signal architecture can reduce engineering changes and commissioning work during maintenance. However, the input range, scale, supply voltage and order number must be matched before installation.

Application Fields

DEIF DLQ144-PC-NB is primarily used in marine engine automation, propulsion control and rotating-machinery monitoring systems. Its strongest application is where a reliable local RPM indication is required in addition to electronic control-system monitoring.

In merchant vessels, the instrument can display main-engine or propulsion-shaft speed from the bridge or engine-control console. Ahead/zero/astern scales are especially useful during harbor maneuvering, docking and low-speed propulsion operations.

In tankers, bulk carriers and container vessels, the DLQ144-PC-NB can be incorporated into legacy DEIF Norcontrol machinery automation panels to provide direct RPM feedback. The instrument is suitable for applications where the original panel architecture must be preserved during retrofit or maintenance.

For offshore support vessels, tugs and dredgers, accurate local speed indication supports propulsion monitoring during dynamic maneuvering and variable-load operation. The analog display is particularly convenient where operators need to observe speed continuously without relying exclusively on digital control screens.

The instrument can also be used for generators, motors, pumps, fans and other rotating machinery where the available signal is compatible with the selected DLQ144 configuration. For industrial applications outside marine systems, the actual input signal, scale and power supply should be verified because published versions of this model use different configurations.

Related Products

• DEIF DLQ144-PC-NB 1113150024A — A documented marine configuration with 10…0…10 V input and 24 VAC/DC supply.
• DEIF XL96 — Panel-mounted analog indicator family used for displaying electrical or machinery-related process values.
• DEIF EC-1 — Engine controller used in DEIF marine engine-control architectures; can complement a dedicated RPM display.
• DEIF PPU-3 — Generator/paralleling controller for power-management applications rather than direct RPM indication.
• DEIF LSU-112DG — Load-sharing unit for generator applications; complements engine and generator control instrumentation.
• DEIF LSU-113DG — Load-sharing/paralleling equipment for multi-generator systems.
• DEIF RMV-112D — Voltage relay for electrical protection and monitoring applications.