Wartsila 02047-MT-4112 Varec Level Transmitter — Marine Tank Monitoring

Introduction to the Wartsila 02047-MT-4112 Varec Level Transmitter

Accurate and reliable tank level monitoring is an essential requirement across marine, offshore, and industrial applications where fluid inventory management directly impacts operational safety, regulatory compliance, and economic efficiency. The Wartsila 02047-MT-4112 Varec level transmitter represents a premium solution for these demanding applications, combining robust 316C16 stainless steel construction, ATEX intrinsic safety certification, and precision measurement technology in a package engineered for the harshest environments on earth.

Wartsila, the Finnish technology leader with deep roots in marine and energy markets, acquired the Varec brand's expertise in tank gauging and level measurement to complement its comprehensive portfolio of ship systems and power solutions. The 02047-MT-4112 transmitter carries forward this legacy of precision engineering, providing accurate level measurement for fuel tanks, ballast tanks, lube oil reservoirs, hydraulic systems, and chemical storage vessels. With ATEX Ineris 06 ATEX 0068X certification and Ex ia IIA T4 Ga intrinsically safe protection, this transmitter can be deployed confidently in hazardous zones where explosive atmospheres may be present.

Manufactured in England to exacting standards, this level transmitter reflects the quality and durability that marine operators require. Its substantial 74.5 kg weight indicates heavy-duty construction with substantial process connections and a rugged housing designed to withstand the mechanical stresses, vibration, and corrosive exposure characteristic of marine and offshore installations. At Aeliya Marine Tech, we supply this transmitter with our standard 30-day warranty and free worldwide shipping, ensuring that you receive a fully functional instrument ready for installation.

Product Overview

The Wartsila 02047-MT-4112 is a level transmitter designed for continuous measurement of liquid levels in tanks and process vessels. It is part of the Fig. 3304 level gauge family, which has established a strong reputation for reliability in marine tank monitoring applications worldwide. The transmitter converts the mechanical level position into a standardized electrical signal — typically 4-20mA — that can be transmitted to cargo control rooms, engine control rooms, or distributed control systems for display, alarming, and automatic control functions.

The instrument's 316C16 stainless steel wetted parts provide exceptional resistance to corrosion from seawater, fuel oils, lubricants, hydraulic fluids, and a wide range of chemicals. This austenitic stainless steel grade maintains its mechanical properties and corrosion resistance across the transmitter's full operating temperature range of -20°C to +50°C, making it suitable for installation in Arctic environments, tropical climates, and everything in between. The external housing is similarly robust, protecting the internal electronics from moisture, dust, and physical impact.

The intrinsically safe (Ex ia) protection concept is a key safety feature for this transmitter. Intrinsic safety works by limiting the electrical energy available to the transmitter under fault conditions to a level below that required to ignite the surrounding explosive atmosphere. This "Ex ia IIA T4 Ga" rating permits installation in Zone 0 — the most hazardous classification where explosive gas-air mixtures are present continuously or for long periods. The "ia" designation indicates the highest level of intrinsic safety protection with fault tolerance for up to two independent faults.

The transmitter is designed to work in conjunction with the Fig. 3304 Level Gauge system, a proven mechanical/electronic tank gauging solution widely used on tankers, bulk carriers, offshore supply vessels, and naval ships. This integration provides operators with both local visual indication at the tank and remote electronic readout at central monitoring stations. The standardized interface simplifies installation and commissioning, reducing vessel downtime during retrofit projects or newbuild outfitting.

Technical Specifications

Parameter	Value
Manufacturer	Wartsila (Varec)
Model	02047-MT-4112
Product Type	Level Transmitter
Condition	Used / Tested
Country of Origin	England
Weight	74.5 kg
ATEX Certificate	Ineris 06 ATEX 0068X
Protection Level	Ex ia IIA T4 Ga
Operating Temperature	-20°C to +50°C
Material	316C16 stainless steel
Compatibility	Fig. 3304 Level Gauge

Key Features & Benefits

• ATEX Certified: Ineris 06 ATEX 0068X certification ensures compliance with European hazardous area regulations, permitting installation in explosive atmospheres throughout the EU and in any jurisdiction recognizing ATEX standards.
• Intrinsic Safety (Ex ia): The Ex ia IIA T4 Ga protection level allows installation in Zone 0 — the most hazardous classification — with energy limitation that prevents ignition even under two independent fault conditions.
• 316C16 Stainless Steel Construction: High-grade stainless steel provides outstanding corrosion resistance against seawater, fuel oils, lubricants, hydraulic fluids, and aggressive chemicals encountered in marine and process applications.
• Wide Temperature Range: Rated for operation from -20°C to +50°C ambient, covering the full range of temperatures encountered in global marine operations from Arctic routes to tropical waters.
• Fig. 3304 Compatibility: Designed to integrate with the proven Fig. 3304 level gauge system, providing both local visual indication and remote electronic transmission in a unified tank monitoring solution.
• Heavy-Duty Construction: At 74.5 kg, the transmitter's robust housing and process connections withstand the vibration, shock, and mechanical stresses of shipboard and offshore installations.
• Marine Proven Design: Manufactured in England by Wartsila, a leading marine technology company, ensuring that the product meets classification society requirements and industry best practices.
• Gas Group IIA: Suitable for use with common industrial gases including propane, butane, and methane (natural gas), covering the majority of hazardous atmospheres encountered in marine and process applications.

Industrial Applications

Marine Fuel Tank Monitoring

On commercial vessels of all types, accurate fuel tank level monitoring is essential for voyage planning, consumption tracking, and regulatory compliance with MARPOL and port state control requirements. The 02047-MT-4112 transmitter provides continuous level measurement for heavy fuel oil (HFO), marine diesel oil (MDO), marine gas oil (MGO), and LNG fuel tanks. The intrinsically safe design permits installation in fuel tank vapor spaces where explosive mixtures may be present, while the 316 stainless steel construction resists corrosion from sour fuels and seawater contamination.

Ballast Water Management

The International Maritime Organization's Ballast Water Management Convention requires accurate monitoring of ballast tank levels to ensure proper treatment and reporting. The Wartsila transmitter provides reliable level measurement in ballast tanks where seawater exposure and biological fouling challenge lesser instruments. Its stainless steel construction and ATEX certification address the safety and durability requirements of ballast system installations on tankers, bulk carriers, and container ships.

Offshore Platform Tank Gauging

Offshore oil and gas production platforms contain numerous tanks for storing crude oil, produced water, chemicals, drilling fluids, and diesel fuel. Many of these tanks are in hazardous areas classified under ATEX/IECEx zone definitions. The 02047-MT-4112's Ex ia certification and IIA gas group rating make it suitable for installation on these platforms, where safety requirements are stringent and equipment reliability is critical due to the logistical challenges of offshore maintenance.

Lube Oil and Hydraulic Reservoir Monitoring

Large diesel engines, gas turbines, and hydraulic systems on ships and in power plants require continuous monitoring of lubricating oil and hydraulic fluid reservoir levels. Low oil level conditions can cause catastrophic machinery damage if not detected promptly. The Wartsila transmitter provides the accuracy and reliability needed for these protective monitoring applications, with stainless steel compatibility for phosphate ester hydraulic fluids and synthetic lubricants.

Chemical and Process Tank Level Measurement

In chemical processing plants, refineries, and tank terminals, the 02047-MT-4112 can be applied to storage tanks containing a wide range of chemicals compatible with 316 stainless steel. The ATEX certification and intrinsic safety design permit installation in areas where solvent vapors or process gases create explosive atmospheres. The transmitter's accuracy and long-term stability support inventory management, custody transfer, and process control applications.

Product Configuration & Setup

Proper installation of the Wartsila 02047-MT-4112 level transmitter is critical to achieving accurate and reliable measurement performance. The transmitter must be mounted on the tank using the appropriate process connection — typically a flange or threaded fitting provided by the gauge manufacturer. Ensure that the process connection is rated for the tank's design pressure and temperature and that the gasket material is compatible with the tank contents. The transmitter's sensing element must be positioned to measure the actual liquid level across the full range of interest.

Electrical connection must be made through an intrinsically safe (IS) barrier or galvanic isolator installed in the safe area. The IS barrier limits energy transfer from the non-hazardous side to the hazardous side, maintaining the intrinsic safety of the circuit. Verify that the barrier parameters (voltage, current, and power) are compatible with the transmitter's entity parameters as listed on the ATEX certificate. Incorrect barrier selection can compromise safety and may invalidate certification compliance.

After installation, calibrate the transmitter using known reference points — typically the tank empty and tank full levels. For installations where physical empty/full conditions cannot be achieved, use a portable level simulator or reference gauge to verify output accuracy. Document the calibration results for regulatory compliance and maintenance records. The 4-20mA output signal should be verified at the receiving instrument (DCS, PLC, or gauge panel) to confirm proper end-to-end signal integrity.

Periodic maintenance should include inspection of the process connection for leaks, cleaning of the sensing element if fouling is suspected, and verification of output accuracy against a reference standard. In marine applications, the transmitter should be inspected during each dry docking or intermediate survey as required by the vessel's classification society. Maintain records of all inspections, calibrations, and maintenance activities for regulatory and insurance purposes.

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Frequently Asked Questions (FAQ)

Q: What does the ATEX certification on this transmitter indicate?

A: The Ineris 06 ATEX 0068X certificate confirms that this transmitter has been tested and certified by the French notified body Ineris for use in potentially explosive atmospheres in accordance with European Directive 2014/34/EU. The "X" suffix indicates special installation conditions detailed in the certificate.

Q: What does Ex ia IIA T4 Ga mean?

A: Ex ia = intrinsically safe with the highest protection level (tolerates two faults). IIA = gas group covering propane, butane, and similar gases. T4 = temperature class with a maximum surface temperature of 135°C. Ga = equipment protection level suitable for Zone 0 (highest hazard).

Q: What is 316C16 stainless steel?

A: 316C16 is a high-grade austenitic stainless steel with excellent corrosion resistance due to its molybdenum content. It is widely used in marine, chemical, and pharmaceutical applications where exposure to chlorides, acids, and other corrosive media is expected.

Q: What tanks can this transmitter be used on?

A: This transmitter is suitable for fuel oil tanks, ballast tanks, lube oil reservoirs, hydraulic system tanks, chemical storage vessels, and process tanks where the medium is compatible with 316 stainless steel and the pressure/temperature ratings are within specification.

Q: What is an intrinsically safe barrier and do I need one?

A: An intrinsically safe (IS) barrier or galvanic isolator is required when connecting this transmitter to non-intrinsically safe equipment in a safe area. The barrier limits energy transfer to maintain intrinsic safety. Always install the IS barrier in the safe area, not in the hazardous zone.

Q: What warranty is provided?

A: Aeliya Marine Tech provides a 30-day warranty on this used Wartsila level transmitter (SKU: 185547). Free worldwide shipping and technical support are included with your purchase.

External Technical Resources

• Wartsila Marine Solutions — Official Wartsila marine products and systems including tank monitoring solutions
• Wikipedia — Wartsila — Overview of Wartsila's history, products, and role in marine and energy markets

Why Choose Aeliya Marine Tech

Aeliya Marine Tech has earned the trust of shipowners, shipyards, offshore operators, and industrial facilities worldwide through our commitment to quality, technical expertise, and customer service. We understand that marine instrumentation must perform reliably in the most demanding conditions on earth, and we rigorously inspect every instrument we sell to ensure it meets the standards that your operations depend upon.

When you purchase the Wartsila 02047-MT-4112 Varec level transmitter from Aeliya Marine Tech, you gain more than just a product — you gain a partner with deep knowledge of marine instrumentation and hazardous area requirements. Our 30-day warranty, free worldwide shipping, and responsive technical support team ensure that your tank monitoring project proceeds smoothly from procurement through commissioning. Contact us today to discuss your level measurement requirements and discover how we can support your operation.