OMICRON OVS 2.1 OP Vapour Alarm System – Tanker Oxygen Monitoring, Pressure Alarms, Troubleshooting and Spare Parts

 

Product Overview

 

The OMICRON OVS 2.1 OP Vapour Alarm System is a marine monitoring and alarm system designed to monitor oxygen content and vapour pressure in tanker vapour-return lines during cargo loading. It helps shipboard personnel identify abnormal conditions through measurement displays, visual indicators and audible alarms.

 

The photographed cabinet is marked VAPOUR ALARM SYSTEM OVS 2.1 OP and identifies OMICRON, Tønsberg, Norway. The visible identification details include serial number TID 1331-4 and class number 1148 USL05.

 

SM MARINE SERVICE™ supports enquiries for marine automation, monitoring and alarm equipment, including replacement cabinets, compatible sensors and spare parts, subject to availability and technical verification.

 

Product Information

 

- Original manufacturer: Omicron, Tønsberg, Norway

- Product family: OMICRON OVS 2.1

- Model marking: OVS 2.1 OP

- Equipment type: Marine oxygen and vapour-pressure alarm system

- Primary application: Tanker vapour-return monitoring during cargo loading

- Visible serial number: TID 1331-4

- Visible class number: 1148 USL05

- Associated equipment: Detector cabinet, oxygen sensor, pressure sensor(s), flow-failure initiator and electrical interfaces

 

The photograph identifies the product family and model marking but does not confirm the exact suffix configuration, internal hardware revision or complete installed arrangement.

 

What Is the OMICRON OVS 2.1 OP?

 

During tanker cargo loading, displaced vapour may pass through a dedicated vapour-return system. Monitoring oxygen content and pressure helps operators identify conditions that require investigation under the vessel's approved cargo-handling procedures.

 

The OVS 2.1 OP is a microcontroller-based monitoring system intended for this application. Its operator-facing cabinet displays oxygen concentration and vapour pressure, indicates alarm and system conditions, and provides controls for acknowledging audible alarms.

 

Depending on the installation, the complete system may include a deck-mounted detector cabinet, approved oxygen and pressure sensors, flow monitoring, manifold selection and alarm relay interfaces.

 

The OVS 2.1 OP is specifically intended for compatible tanker vapour-monitoring arrangements. It should not be confused with a cargo-tank level gauge or a general-purpose gas detector.

 

Main product image: Insert the original SM MARINE SERVICE™ product photograph here.

 

Recommended alt text: OMICRON OVS 2.1 OP marine tanker vapour alarm system cabinet.

 

Main Features

 

1. Oxygen-content monitoring

 

Displays oxygen concentration as % O₂ and provides a high-oxygen alarm indication when the configured threshold is exceeded.

 

2. Vapour-pressure monitoring

 

Displays vapour pressure in mbar, with configurable low- and high-pressure alarm functions according to the installed system configuration.

 

3. Flow-failure monitoring

 

Indicates a flow problem in the oxygen-sampling arrangement, helping operators identify conditions that may affect measurement reliability.

 

4. Visual and audible alarms

 

The front panel includes status indicators, a buzzer and controls for buzzer silence, alarm acceptance/reset, lamp testing and on/off operation. Acknowledging an alarm does not mean the underlying fault has cleared.

 

5. Configurable monitoring

 

The documented product family supports configurable oxygen and pressure alarm settings and, in applicable arrangements, multiple pressure-sensor channels.

 

6. System fault monitoring

 

The documented design includes system monitoring and potential-free relay outputs for functions such as power failure, system failure and common alarm.

 

7. Approved sensor interfaces

 

The documented arrangement uses intrinsically safe sensor circuits and associated Zener barriers. These components must match the approved system design and must never be bypassed.

 

Main Technical Specifications

 

Parameter| Description

Model| OMICRON OVS 2.1 OP

Function| Oxygen and vapour-pressure monitoring

Control technology| Microcontroller-based

Oxygen display| % O₂

Pressure display| mbar

Alarm functions| High oxygen, low pressure, high pressure and system/flow faults as configured

Indicators| Measurement, alarm and system-status indicators

Audible alarm| Built-in buzzer

Operator controls| Silence, accept/reset, lamp test and on/off

Relay outputs| Power failure, system failure and common alarm in documented configurations

Optional communication| Modbus RS-485/422 in applicable configurations

Associated installation| Electronic alarm cabinet and compatible deck detector equipment

 

The supplied photograph does not confirm the cabinet's electrical supply rating, sensor ranges, internal wiring, approved alarm setpoints or hardware revision. Verify these details against the equipment nameplate and applicable technical documentation.

 

Main System Components

 

- Electronic alarm cabinet: Houses the operator interface and associated electronics.

- Oxygen sensor: Measures oxygen concentration in the sampled vapour stream.

- Pressure sensor(s): Monitor vapour-line pressure within the approved system arrangement.

- Flow-failure initiator: Detects a problem with the oxygen-sampling flow.

- Detector cabinet: Houses sensing and associated flow, selection, test or purge arrangements as fitted.

- Manifold selector: Allows selection of the relevant vapour line where included in the installation.

- Zener barriers and interfaces: Provide the specified interface for intrinsically safe sensor circuits.

- Optional remote alarm panel: Available in certain system configurations.

 

The exact component layout depends on the vessel's installation and approved system drawings.

 

Common Problems and Troubleshooting

 

The following checks are general diagnostic guidance, not confirmation of defects in the photographed unit. Always follow the vessel's approved procedures and service documentation.

 

1. Cabinet does not power on

 

Possible causes include interrupted supply, protective-device operation, loose connections or an internal power-supply fault. Check the approved supply and accessible connections. If the fault persists, arrange inspection by qualified personnel.

 

2. Oxygen display is blank or abnormal

 

Possible causes include a sensor fault, loss of sampling flow, damaged wiring or a measurement-channel problem. Check the flow-failure indication, sampling arrangement and accessible connections. Sensor calibration or replacement should follow the approved procedure.

 

3. Vapour-pressure display is blank or incorrect

 

Check the identified sensor, electrical connections, sensing arrangement and selected vapour line. Compare the reading with an approved reference instrument where the maintenance procedure requires it.

 

4. Flow-failure alarm remains active

 

Investigate the approved sampling path for restrictions or leakage, and check the flow-failure initiator and its connections. Confirm that the required flow is restored before relying on the oxygen measurement.

 

5. High-oxygen alarm

 

Treat the indication seriously. Follow the vessel's cargo-operation procedures and verify the reading through the approved diagnostic process. Investigate the actual process condition as well as possible sensor or sampling faults.

 

6. Low- or high-pressure alarm

 

Confirm the displayed pressure, selected line and approved alarm settings. Investigate actual pressure conditions and possible sensor or sensing-line faults. Do not change alarm limits simply to suppress an alarm.

 

7. System-failure or intermittent alarms

 

Check the approved supply, accessible connections, moisture ingress, cable condition and documented status indications. If the fault remains, obtain qualified service support.

 

Safety warning: Do not bypass alarm functions, safety interfaces or Zener barriers. Never open a vapour system or disconnect a live sensing line without the required authorisation, isolation and safety procedures.

 

Front-Panel Alarm Indications

 

The photographed panel includes the following labels:

 

- ABOVE 8%: High-oxygen indication; confirm the applicable setpoint and response in the system documentation.

- FLOW-FAILURE: Sampling-flow fault indication.

- OXYGEN CONTENT % O₂: Oxygen measurement display.

- LOW PRESSURE / HIGH PRESSURE: Pressure alarm indications.

- VAPOUR PRESSURE mbar: Pressure measurement display.

- SYSTEM FAILURE: System fault indication.

- ALARM / ACCEPTED: Alarm and acknowledgement indicators.

 

These labels do not prove that a fault is currently active. Alarm behaviour must be verified against the installed configuration and applicable manual.

 

Maintenance Recommendations

 

1. Inspect the cabinet, door seal, cable entries and mounting hardware during scheduled maintenance.

2. Keep displays and controls clean, legible and accessible.

3. Follow approved procedures for oxygen-sensor checks and pressure-sensor verification.

4. Check the sampling path and flow-failure function according to the maintenance schedule.

5. Verify alarm settings against approved vessel documentation.

6. Test audible alarms, indicators and relay outputs only under the authorised test procedure.

7. Inspect the detector cabinet for corrosion, moisture and mechanical damage.

8. Record sensor replacements, calibration checks, alarm tests and repairs.

9. Retain wiring diagrams, identification details and the installed configuration for spare-parts procurement.

 

Spare Parts and Replacement Equipment

 

SM MARINE SERVICE™ supports enquiries for OMICRON OVS 2.1 OP systems and related marine automation equipment, subject to stock availability and compatibility checks.

 

Potential requirements include:

 

- Complete alarm cabinet or electronic assemblies

- Display, control and alarm-indicator components

- Power-supply and PCB assemblies

- Compatible relay and interface components

- Approved Zener barriers

- Oxygen and vapour-pressure sensors

- Flow-failure initiator

- Detector cabinet and documented accessories

- Cables, connectors and other approved replacement parts

 

Confirm the Correct System Variant

 

The OVS 2.1 product family includes configurations such as OVS 2.1 OP/A AL, OVS 2.1 OP/B AL and OVS 2.1 OP/DET. Published catalogue references associate part numbers 116-KIT-K4001, 116-KIT-K4010 and 116-KIT-K4020 with these respective configurations.

 

These references do not establish the exact variant of the photographed cabinet. Before ordering, confirm the full model designation, rating label, serial number, interfaces and installed arrangement.

 

Depending on availability, enquiries may be considered for new, used, refurbished, reconditioned or tested working equipment. Condition, test scope, certification and compatibility must be confirmed for each item.

 

For a quotation, provide the required component, quantity, delivery destination and clear photographs of the identification labels. The visible serial number TID 1331-4 may help with identification.

 

Frequently Asked Questions

 

What is the OMICRON OVS 2.1 OP?

 

It is a tanker vapour alarm system designed to monitor oxygen content and pressure in compatible vapour-return arrangements.

 

Who originally manufactured the system?

 

The equipment is associated with Omicron in Tønsberg, Norway. FOSSTECH AS has held the rights to produce and sell Omicron Vapour Alarm Systems since 2018.

 

What does the ABOVE 8% label mean?

 

It identifies a high-oxygen indication on the photographed panel. Confirm the applicable alarm setting and required response using the approved documentation.

 

Can the complete cabinet or sensors be replaced?

 

Replacement may be possible, but the exact variant, interfaces, sensor compatibility and approval requirements must be checked before procurement.

 

Can SM MARINE SERVICE™ assist with spare parts?

 

Yes. Enquiries can be submitted for available cabinets, sensors and related components, subject to technical verification and stock availability.

 

Contact SM MARINE SERVICE™

 

SM MARINE SERVICE™

Marine Automation & Navigation Equipment Supplier

 

Available Condition: New Equipment, Used Equipment, Refurbished Equipment, Reconditioned Equipment

 

Stock Location: Bangladesh, China

 

Services: Worldwide Shipping, Technical Support, Spare Parts Supply, Marine Equipment Sourcing

 

Contact Information

SM MARINE SERVICE™

Samir Market, DT Road, Pahartali, beside CDA Market, Chattogram, Bangladesh

Mobile / WhatsApp / Viber: +88 01818 929292

Email: info@smmarineservice.com

Website: www.smmarineservice.com

 

Contact SM MARINE SERVICE™ for enquiries about the OMICRON OVS 2.1 OP Vapour Alarm System, compatible marine monitoring equipment and replacement spare parts.

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