JOWA Seaguard 15ppm Bilge Alarm Oily Water Separator (ows)

Overview

JOWA Seaguard 15ppm Bilge Alarm Oily Water Separator (OWS) | IMO Approved Marine Oil Content Monitor

The JOWA Seaguard 15ppm Bilge Alarm is an IMO-approved marine oil content monitoring system designed to continuously measure the oil concentration in treated bilge water discharged from approved Oily Water Separator (OWS) systems. Developed for commercial vessels and offshore applications, the Seaguard helps ship operators comply with MARPOL Annex I and IMO Resolution MEPC.107(49) by continuously monitoring oil content, activating alarms, and controlling overboard discharge when permitted limits are exceeded. The system incorporates an optical oil content sensor, automatic sensor flushing, dual alarm outputs, and removable SD card data logging for reliable long-term operation.

At Ship Care Service, we supply genuine JOWA Seaguard 15ppm Bilge Alarm Units, oil content monitoring components, spare parts, accessories, calibration support, and technical assistance for commercial vessels, offshore platforms, shipyards, and marine engineering companies worldwide.

What is the JOWA Seaguard 15ppm Bilge Alarm?

The JOWA Seaguard 15ppm Bilge Alarm is a continuous Oil Content Monitor (OCM) installed downstream of an approved oily water separator. Its purpose is to monitor the oil concentration of treated bilge water before discharge overboard.

If the measured oil concentration exceeds the configured alarm limit, the system activates visual and electrical alarm outputs and can operate an Automatic Stopping Device (ASD) to prevent non-compliant discharge. Operational data is stored on a removable SD card for maintenance records and inspections.

Why a 15ppm Bilge Alarm is Important

International marine pollution regulations require ships fitted with oily water separators to continuously monitor discharged bilge water.

A certified bilge alarm helps operators:

• Support compliance with MARPOL Annex I

• Meet IMO MEPC.107(49) requirements

• Prevent accidental oil discharge

• Protect the marine environment

• Support Port State Control inspections

• Maintain discharge records

• Improve onboard environmental compliance

How the JOWA Seaguard Works

The Seaguard continuously monitors treated bilge water whenever the oily water separator is operating.

Step 1 – Bilge Water Sampling

A representative sample of treated bilge water flows through the optical measuring sensor installed after the oily water separator.

Step 2 – Optical Oil Content Measurement

The sensor continuously measures the oil concentration of treated bilge water using an optical detection principle, providing real-time oil content monitoring.

Step 3 – Digital Signal Processing

The control unit continuously evaluates:

• Oil concentration

• Alarm status

• Sensor condition

• System operation

• Data logging status

Operators can monitor system status directly from the display interface.

Step 4 – Alarm & Automatic Discharge Control

When oil concentration exceeds the configured alarm level, the system can:

• Activate visual alarms

• Activate electrical alarm outputs

• Operate the Automatic Stopping Device (ASD)

• Stop or divert overboard discharge

• Record alarm events on the removable SD card

This helps prevent discharge exceeding permitted oil concentration limits.

Key Features of the JOWA Seaguard 15ppm Bilge Alarm

IMO Type Approved

The JOWA Seaguard 15ppm Bilge Alarm is approved in accordance with IMO Resolution MEPC.107(49) for use with approved oily water separator systems.

Adjustable Alarm Outputs

The system provides two independent alarm outputs that can be configured between 0 and 15 ppm, allowing flexible alarm settings based on operational requirements.

Automatic Sensor Flush

An integrated Auto Flush function automatically cleans the measuring sensor, helping reduce contamination and maintain stable measurement accuracy with minimal operator intervention.

SD Card Data Logging

The Seaguard automatically stores operational logs on a removable SD card, making inspection records and operational history easy to retrieve.

Retrofit-Friendly Design

The compact design makes the Seaguard suitable for both new installations and retrofit projects where engine room space is limited

Typical Applications

The JOWA Seaguard 15ppm Bilge Alarm is commonly installed on:

• Container Ships

• Bulk Carriers

• Oil Tankers

• Chemical Tankers

• Offshore Support Vessels

• Passenger Ships

• Naval Vessels

• General Cargo Ships

• Marine Power Plants

Industries We Serve

The Seaguard is widely used across:

• Commercial Shipping

• Offshore Oil & Gas

• Marine Engineering

• Ship Management

• Shipyards

• Marine Service Companies

• Port Operations

• Marine Environmental Compliance

Who Uses the JOWA Seaguard?

Typical users include:

• Chief Engineers

• Marine Engineers

• Technical Superintendents

• Shipowners

• Ship Management Companies

• Offshore Operators

• Marine Service Engineers

• Environmental Compliance Officers

• Shipyards

Why Choose the JOWA Seaguard 15ppm Bilge Alarm?

Marine operators worldwide choose the JOWA Seaguard 15ppm Bilge Alarm because it offers:

• Continuous 15ppm oil content monitoring

• IMO-approved performance

• Automatic sensor flushing

• Adjustable dual alarm outputs

• Removable SD card data logging

• Retrofit-friendly installation

• Reliable long-term marine operation

• Simple maintenance and dependable performance

JOWA Seaguard 15ppm Bilge Alarm Oily Water Separator (OWS) – Technical Information, Operation, Maintenance & Troubleshooting

Technical Overview

The JOWA Seaguard 15ppm Bilge Alarm is a marine oil content monitoring system designed to continuously measure the oil concentration in treated bilge water discharged from approved Oily Water Separator (OWS) systems. Installed downstream of the separator, the unit continuously monitors oil concentration before overboard discharge to help vessels comply with MARPOL Annex I and IMO Resolution MEPC.107(49).

The system consists of a control unit, an optical measuring sensor, and associated sampling components. During operation, treated bilge water flows through the measuring sensor where oil concentration is continuously monitored. The control unit processes measurement data, supervises system operation, records operational events on a removable SD card, and activates alarm outputs or an Automatic Stopping Device (ASD) whenever the configured oil concentration limit is exceeded.

Designed specifically for marine applications, the Seaguard combines reliable oil content monitoring, automatic sensor flushing, data logging, and simple maintenance for dependable long-term operation.

Note: Installation arrangements, communication interfaces, and optional accessories may vary depending on vessel design and the oily water separator manufacturer. Always verify equipment configuration using the equipment nameplate and official JOWA documentation.

Main Components of the JOWA Seaguard

The JOWA Seaguard consists of several integrated components that work together to provide continuous oil content monitoring.

Control Unit

The control unit serves as the central operating and monitoring interface.

Its functions include:

• Continuous oil content monitoring

• Alarm management

• System configuration

• Display operation

• Data logging

• Automatic Stopping Device (ASD) control

• Self-diagnostics

Operators can easily monitor system status and alarm conditions from the display.

Optical Measuring Sensor

The measuring sensor continuously analyzes treated bilge water flowing from the oily water separator.

Its functions include:

• Optical oil concentration measurement

• Continuous sample monitoring

• Stable long-term performance

• Reliable detection accuracy

The sensor is designed for easy inspection and routine maintenance.

Automatic Sensor Flush System

The integrated flushing system automatically cleans the measuring sensor during operation.

Benefits include:

• Reduced sensor contamination

• Improved measurement stability

• Lower maintenance requirements

• Longer service intervals

Sampling System

The sampling arrangement continuously delivers treated bilge water through the measuring sensor to ensure accurate oil concentration monitoring.

Automatic Stopping Device (ASD) Interface

When oil concentration exceeds the configured alarm level, the Seaguard can activate an Automatic Stopping Device to stop or divert overboard discharge.

SD Card Data Logging

The removable SD card stores:

• Alarm history

• Oil concentration records

• Operational events

• System status

These records assist with inspections, maintenance planning, and environmental compliance documentation.

Working Principle

The JOWA Seaguard continuously monitors treated bilge water whenever the oily water separator is operating.

Step 1 – Continuous Bilge Water Sampling

A representative sample of treated bilge water flows continuously through the optical measuring sensor.

Step 2 – Optical Oil Content Measurement

The sensor continuously measures oil concentration using an optical detection principle.

The system evaluates changes in oil concentration while maintaining stable measurement performance.

Step 3 – Digital Signal Processing

The control unit continuously processes measured values while supervising:

• Oil concentration

• Alarm status

• Sensor condition

• Operational status

• Data logging

Step 4 – Alarm & Automatic Discharge Protection

When oil concentration exceeds the configured alarm threshold, the system can:

• Activate visual alarms

• Activate electrical alarm outputs

• Operate the Automatic Stopping Device

• Stop or divert overboard discharge

• Record alarm events on the SD card

This helps prevent accidental discharge of oily water exceeding permitted limits.

Advantages of the JOWA Seaguard

Continuous Oil Content Monitoring

The Seaguard continuously supervises treated bilge water throughout oily water separator operation.

Automatic Sensor Cleaning

The integrated Auto Flush system helps maintain measurement accuracy by automatically cleaning the sensor.

SD Card Event Recording

Operational history is stored on a removable SD card for convenient maintenance records and regulatory inspections.

Adjustable Alarm Outputs

Dual alarm outputs provide flexible alarm configuration to meet vessel operational requirements.

Retrofit-Friendly Installation

Its compact design allows installation on new vessels and retrofit projects with limited engine room space.

Marine-Grade Construction

The JOWA Seaguard is designed for reliable operation under demanding marine conditions, including:

• High humidity

• Continuous engine room vibration

• Temperature fluctuations

• Offshore environments

• Long operating hours

Routine Maintenance

Routine maintenance helps ensure accurate monitoring and dependable long-term performance.

Before Operation

Inspect:

• Control unit display

• Alarm indicators

• Measuring sensor condition

• Sampling lines

• Electrical connections

Confirm the system indicates normal operating status before starting the oily water separator.

Weekly Inspection

Check:

• Measuring sensor cleanliness

• Alarm operation

• Display information

• Sampling flow

• Visible leakage

Inspect the sampling arrangement for contamination or restrictions.

Monthly Inspection

Inspect:

• Measuring sensor

• Automatic Flush system

• Sampling system

• Electrical wiring

• Connectors

• Mounting hardware

Clean the measuring sensor if required according to JOWA maintenance recommendations.

Annual Maintenance

Recommended maintenance includes:

• Functional testing

• Calibration verification

• Alarm testing

• Measuring sensor inspection

• SD card verification

• Electrical inspection

• Sampling system inspection

Maintenance activities should be documented within the vessel's Planned Maintenance System (PMS).

Common Operational Problems

Although the JOWA Seaguard is designed for reliable operation, certain operational issues may occasionally occur.

Problem: High Oil Content Alarm

Possible Causes

• Oily Water Separator malfunction

• Excessive oil contamination

• Dirty measuring sensor

• Incorrect separator operation

Recommended Solution

Inspect the separator, verify oil concentration, and clean the measuring sensor if required.

Problem: Measuring Sensor Contamination

Possible Causes

• Oil deposits

• Sludge accumulation

• Inadequate flushing

• Dirty sampling lines

Recommended Solution

Inspect the measuring sensor and verify proper operation of the automatic flushing system.

Problem: No Sample Flow

Possible Causes

• Blocked sampling line

• Closed valve

• Sampling pump issue

• Air trapped in the sampling system

Recommended Solution

Inspect the sampling arrangement and restore proper sample flow before resuming operation.

Problem: Display or Communication Fault

Possible Causes

• Loose electrical connection

• Power interruption

• Wiring damage

• Internal electronic fault

Recommended Solution

Verify electrical supply, inspect wiring, and confirm correct operation of the control unit.

Problem: Frequent False Alarms

Possible Causes

• Dirty measuring sensor

• Air bubbles within the sample

• Calibration drift

• Unstable sample flow

Recommended Solution

Inspect the sensor, verify sampling conditions, and perform calibration verification where required.

Calibration Recommendations

Periodic calibration verification helps maintain accurate oil content measurement.

Calibration is generally recommended:

• During scheduled maintenance

• After replacing the measuring sensor

• Following major servicing

• After extended shutdown

• According to JOWA maintenance procedures

• As required by the vessel's Planned Maintenance System

Genuine Spare Parts Available

Ship Care Service supplies genuine replacement parts for the JOWA Seaguard 15ppm Bilge Alarm, including:

• Optical Measuring Sensors

• Control Units

• Display Modules

• Sampling Components

• Automatic Flush Components

• Solenoid Valves

• SD Card Accessories

• Power Supply Modules

• Wiring Harnesses

• Connectors

• Mounting Hardware

Availability depends on the installed system configuration.

Buying Guide

Before purchasing a JOWA Seaguard or replacement components, consider the following:

Verify System Compatibility

Confirm compatibility with the installed oily water separator and vessel configuration.

Confirm Equipment Identification

Providing the following information helps identify compatible replacement components:

• Model Number

• Serial Number

• Equipment Nameplate

• Oily Water Separator Model

• Existing Part Number (if available)

Choose Genuine Components

Using genuine replacement parts helps maintain:

• Accurate oil content monitoring

• Reliable alarm operation

• Long equipment service life

• Regulatory compliance

• Full compatibility with the installed system

Work with an Experienced Marine Supplier

Choose a supplier capable of providing:

• Genuine JOWA products

• Technical assistance

• Spare parts support

• Worldwide marine supply

• After-sales service

Why Marine Operators Choose the JOWA Seaguard

The JOWA Seaguard 15ppm Bilge Alarm is trusted because it offers:

• Continuous oil content monitoring

• Automatic sensor flushing

• Adjustable dual alarm outputs

• SD card data logging

• Compact retrofit-friendly design

• Easy maintenance

• Reliable long-term marine performance