Marine RDBJ-12A Intelligent Instrumentation
Product Description
Marine RDBJ-12A Intelligent Instrumentation
Product Introduction:
The RDBJ-12A is an advanced discrete (on/off) input monitoring and alarm instrument designed for marine liquid level switch applications. It accepts up to twelve independent switch (digital) input signals from various level switches such as float switches, conductive probes, or optical sensors. Unlike basic switch monitors, the RDBJ-12A features integrated sensor line fault detection – it continuously monitors each switch circuit for open-circuit (broken wire) or short-circuit conditions. This critical function ensures crew are immediately alerted to sensor wiring problems before a real level alarm occurs. The RDBJ-12A is ideal for high level (overfill), low level (pump protection), and intermediate level monitoring on cargo tanks, fuel oil tanks, ballast tanks, bilge wells, and other marine liquid containment systems.
Main Technical Specification:
| Working voltage | DC18~DC28V |
| Input signal | switch signal (Need to configure the loop fault resistance) |
| Relay output (passive contact) | |
| Output of relay | acoustic alarm |
| Communication interface | RS485 |
| J1/J2 | alarm relay output |
| Maximum measuring point | 12 point |
| Output relay capacity | AC250V/2A |
| Function keys | mute button, flash-off button,lamp test button |
| Overall size | 80W x 160H x 88L(mm) |
| Cutout size | 75W x 150H(mm) |
Characteristic：
*Strong anti-interference ability, with internal self-inspection and loop fault judgment functions;
*Sensor fault alarm;
*RS485 communication output interface to realize remote monitoring;
*High brightness, double-row LED alarm indication, red LED indicates alarm status, and yellow LED indicates sensor line fault;
*Classification society approval;