STEIN SOHN LSP144 RUDDER ANGLE INDICATOR IP67

The STEIN SOHN LSP144 Rudder Angle Indicator IP67 is a specialized marine instrument designed to provide precise and immediate visual feedback of a vessel’s rudder position, indicating its turning angle to port or starboard. The “LSP144” likely denotes a specific product series or a standard panel mounting size, while its standout “IP67” ingress protection rating signifies exceptional durability; it is completely dust-tight and capable of withstanding temporary immersion in water, making it ideal for installation in demanding, exposed marine environments like open bridge wings where it may encounter heavy spray or rain. Typically featuring an intuitive analog dial with clear markings and often integrated backlighting for night visibility, this robust indicator receives its signal from a rudder angle transmitter and is constructed from marine-grade materials to ensure reliable performance despite corrosion, UV exposure, vibration, and shock, ultimately aiding in precise steering and safe maneuvering of the vessel.

Technical Specification

General:

Function: Visual indication of rudder blade position (angle).
Application: Marine vessels (ships, boats, yachts) for navigation and maneuvering.
Model Designation: LSP144 (likely indicating a standard panel mount size).

Display:

Type: Analog moving coil or stepper motor pointer display.
Scale: Typically linear, calibrated in degrees Port (P) and Starboard (S).
- Common ranges: $ \pm 35^{\circ} $, $ \pm 45^{\circ} $, or $\pm 7 0^{\circ}$ (full scale).
Readability: Clear, high-contrast markings.
Illumination: Integrated dimmable backlighting for night operation (e.g., Red or White LED).

Electrical:

Power Supply:
- Voltage: 24 VDC nominal (common marine standard), often with a wide operating range, e.g., 18 VDC to 32 VDC.
- Current Consumption: Low, typically < 100 mA (with backlight on).
Input Signal:
- Type: Receives signal from a rudder angle transmitter (potentiometer type).
- Resolution: Depends on the transmitter, but the indicator provides continuous analog feedback.
- Compatibility: Designed to work with standard marine rudder angle transmitters (e.g., 0-10 V, 4-20 mA, or variable resistance).

Environmental:

Ingress Protection (IP) Rating: IP67
- Dust Protection (6): Totally protected against dust ingress.
- Water Protection (7): Protected against the effects of temporary immersion in water (up to 1 meter depth for 30 minutes).
Operating Temperature: $- 2 5^{\circ} C$ to $+ 5 5^{\circ} C$ (or similar, common for marine bridge equipment).
Storage Temperature: $- 4 0^{\circ} C$ to $+ 7 0^{\circ} C$ .
Humidity: Up to 95% non-condensing.
Vibration & Shock: Designed to withstand marine vibration and shock (e.g., conforming to IEC 60945).

Physical:

Dimensions:
- Panel Cut-out: Standard $138 \times 138$ mm (for a $144 \times 144$ mm instrument face).
- Overall Front Dimensions: $144 \times 144$ mm.
- Depth: Varies, typically 50-80 mm behind the panel.
Mounting: Flush panel mount with securing clamps.
Construction Materials:
- Bezel/Front Frame: Often marine-grade aluminum, stainless steel, or high-impact plastic.
- Front Glass/Lens: Tempered glass or UV-resistant polycarbonate.
- Casing: Robust plastic or metal.
Connections: Screw terminals on the rear for power and sensor input.

Compliance:

Standards: Designed to meet relevant international marine standards (e.g., IEC 60945 for maritime navigation and radio communication equipment and systems).
Certifications: May carry type approvals from classification societies (e.g., DNV, LR, ABS, BV) and/or CE mark.