The high quality and reliable Multiple Spot Temperature sensor (MST) measures temperature with a number of Pt-100 spot elements placed at different heights to provide a tank temperature profile and an average temperature.

Only the fully immersed elements are used to determine product temperature.

The spot elements are placed in a flexible gas tight protection tube made from convoluted stainless steel.

A flange can be attached to a top fitting and the tube can be anchored to the bottom.

The MST is easy to install, even if the tank is in service. In pressurized tanks the MST can be installed in a closed thermowell so that it can be removed for service or inspection while the tank is in operation.

For LPG tanks, single spot temperature sensors in thermowells are used.

Temperature sensors can be connected in two ways to the RTG:

• Directly into the RTG with common return connection (up to six temperature elements)
• Via the DAU (up to 14 temperature elements)

A water level sensor or a junction box can be integrated in the MST.

Highest reliability and custody transfer accuracy with up to 14 Pt-100 sensor elements

Available with 1/6 and 1/10 DIN B temperature accuracy class

• Easy integration in Rosemount Tank Gauging System (sometimes connected directly into gauge)

The horn antenna gauge is designed for easy installation on 200 mm (8-in.) or larger nozzles on fixed roof tanks. It measures on a variety of oil products except for asphalt and similar products for which the parabolic antenna gauge is recommended. RTG 3920 is delivered with a flange for straight installation or one for inclined installation. The inclined flange is used when the gauge is installed close to the tank wall and highest accuracy is required. Otherwise the straight flange is used. Installation is normally made without taking the tank out of operation.

• Highest accuracy for inventory and custody transfer on fixed roof tanks
• Curved-shaped, drip-off antenna design for enhanced reliability and precision 
• TÜV-tested and approved for overfill protection according to WHG regulations
• Suitable for SIL 2 applications in accordance with IEC 61508/61511
• Inclined installation possibility when nozzle is close to the tank wall 
• Possibility to install gauge with tank in operation

The RTG 3930 gauge is designed for installation on tanks with fixed roofs. It measures levels of products ranging from clean products to bitumen/asphalt. The design of the parabolic antenna gives extreme tolerance against sticky and condensing products.

• Highest accuracy for inventory and custody transfer on fixed roof tanks
• Drip-off antenna design with extreme tolerance against coating
• Even suitable for asphalt and bitumen 
• TÜV-tested and approved for overfill protection according to WHG regulations
• Suitable for SIL 2 applications in accordance with IEC 61508/61511
• Possibility to install gauge with tank in operation

RTG 3950 with its small-sized array antenna is made for installation on existing still-pipes.

Typical applications are crude oil tanks with floating roofs and gasoline/product tanks with or without inner floating roofs.

To get custody transfer accuracy the gauge uses the Low Loss Mode, invented for the TankRadar products, to transmit the radar waves in the center of the pipe. This virtually eliminates degradation of the accuracy due to rust and product deposits inside the pipe.

RTG 3950 is available for 5-, 6-, 8-, 10- and 12-in. pipes.

There are two versions of RTG 3950; fixed and inclined. The inclined version has a hinged hatch, enabling full pipe size product sampling or verification hand-dips.

Installation is normally made without taking the tank out of operation.

• Highest accuracy for inventory and custody transfer on tanks with still-pipes
• Small-sized drip-off antenna design for increased reliability
• Low Loss Mode virtually eliminates accuracy degradation due to product build-up and rust
• TÜV-tested and approved for overfill protection according to WHG regulations
• Suitable for SIL 2 applications in accordance with IEC 61508/61511
• Possibility to install gauge with tank in operation
• Two versions available, fixed and inclined
• Inclined version with hinged hatch enables product sampling and verification hand-dips

The RTG 3960 gauge is designed for level measurement of liquefied gas in LPG or LNG tanks. A still-pipe enables the gauge to have a sufficiently strong echo even under surface boiling conditions.

The radar signals are transmitted inside the still-pipe. The pressure sealing is a quartz/ceramic window approved for use in pressurized vessels. As an option the gauge is equipped with a fire-proof ball valve and a vapor space pressure sensor. The pressure sensor is required for highest accuracy.

A patented reference device function enables measurement verification with the tank in operation. A reference pin mounted in a still-pipe hole, and a deflection plate with a reflection ring at the lower pipe end provides measured distance values which are compared with stored positions.

Installation is made with the pressurized tank taken out of operation.

• Highest accuracy for inventory and custody transfer on tanks with liquiefied gas
• Antenna installed in 100 mm (4 in.) still-pipe, ensuring a strong echo even under surface boiling and turbulent conditions
• TÜV-tested and approved for overfill protection according to WHG regulations
• Suitable for SIL 2 applications in accordance with IEC 61508/61511

The DAU is powered from, and communicates through the radar gauge to which it is connected. It is intrinsically safe using zener barriers on the Transmitter Interface Card (TIC) in the gauge.

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• Handles up to 14 Pt-100 temperature inputs
• Level, ullage, spot & average temperature field display and analog input
• Excellent readability
• Easy to install and use
• Robust, weather/dirt protection
• Intrinsically safe

RDU 40 is a robust display unit for outdoor use in hazardous areas. If the number of temperature elements per tank is 6 or less, the RDU 40 is the most cost effective solution for field display. In this case the temperature elements can be connected directly to the radar level gauge without using a Data Acquisition Unit (DAU).

It displays calculated data such as level, average temperature, volume, signal strength etc. Data can be displayed in lists or as single values, with a choice for the operator to have a user defined view.

<p style="&quot;line-height:" 15pt;="" background:="" white;"=""> The RDU 40 is connected by a 3-wire cable up to 100 m (330 ft) from the gauge. Up to two units can be connected to the same TankRadar Rex gauge.

The capacitive Water Level Sensor (WLS) continuously measures free water level below the oil surface and provides input for on-line net inventory. It is integrated with the Multiple Spot Temperature sensor (MST). The WLS is welded to the MST to get a hermetic design and it has no moving parts.

The WLS output is an analog 4-20 mA or digital HART signal, which is connected directly to a radar gauge.

There is a Pt-100 temperature sensor inside the probe, allowing measurements at low levels.

The WLS is welded to the MST to get a hermetic design. The open model WLS is suitable for crude oil applications and the closed model is suitable for lighter fuels such as diesel oil etc.

A junction box can be integrated with the WLS.

Measures interface between water and oil

• Integrated with multiple spot temperature sensor or stand-alone for maximum flexibility

• Highest reliability and custody transfer accuracy

• Easy integration into Rosemount Tank Gauging System

• 2 field bus ports, 4 group bus ports

• RS232, RS485 and TRL2 Modbus communication possibility
• Redundant options for higher safety

Installation is performed using the mounting kit, included in all deliveries, which enables fitting of the FBM to a standard DIN rail.

• Increases the possible distance between an FCU and TankMaster PC
• Diagnostic LEDs on front cover
• Enables multidrop - one TankMaster can serve many FCUs via the FBM 2180
• Multiple installation options
• Enables FCU redundancy