Veeder-Root Mag Plus In-Tank Probe for Light and Heavy Oil

Inventory probe for fuel oil, lubricants and alternative fluids

The Veeder-Root Mag Plus in-tank probe for light and heavy oil is the Mag Plus variant for heavier or non-fuel liquids in underground and aboveground tanks. It is offered with water detection (0846397-3xx) or without it (0846397-6xx), and in both cases it is for inventory only, with no leak detection.

The datasheet lists fuel oil #4, motor oil, 90W gear oil, transmission fluid, toluene and high-density biodiesel (specific gravity above 0.865) as approved products, to be used with the light-oil float kit. Float kits for alternative fluids without a water float, light oil and heavy oil are available in 2 in and 4 in sizes.

Technical specifications

Source document: Veeder-Root 577014-449-05 Rev. D (2026). The product code on this page is our own; the part numbers are quoted as printed.

Applications beyond fuel

Light and heavy oil products are common in power plants, workshops and depots, where the need is to know the stock level rather than to test for leaks. Because leak detection is not part of this probe, it fits tanks where inventory and a water alarm are enough. Biodiesel tank testing approval is stated in the datasheet for B6 to B20 meeting ASTM D7467 and B100 meeting ASTM D6751, and motor oil is noted as compatible with tank testing.

Choose the float kit by fluid: the light oil kit for the listed light products, the heavy-oil kit for heavier oils, and the alternative-fluids kit when no water float is wanted. Use the 6xx part number with no water detection when water would never settle in the product or is not of interest.

What to confirm before ordering

• Product and density, to choose the light oil, heavy oil or alternative-fluids float kit.
• Whether water detection is wanted (3xx) or not (6xx).
• Probe length, cable length and riser size (2 in or 4 in).
• Console and interface module from the compatibility table.

How the Veeder-Root MAGPLUS-OIL works

A float rides on the liquid and carries a magnet. The magnet sits near a stainless steel probe shaft with a row of sensors. The probe finds the float position and sends the level to the console. A second float on the water version shows the water level under the product. Temperature sensors along the shaft give an average temperature.

Where the MAGPLUS-OIL is used

• Fuel oil tanks
• Motor oil and gear oil tanks
• Transmission fluid tanks
• Power plant day tanks
• Workshop and depot tanks

Selection checklist for the MAGPLUS-OIL

• Water detection or not
• Probe length from 48 to 144 inch
• Cable length of 5 or 10 ft
• Float kit for the liquid
• Float size of 2 or 4 inch
• Riser cap and ring kit
• Console in use
• Specific gravity of the liquid

Installation, commissioning and maintenance notes for the MAGPLUS-OIL

Fit the correct float kit for the liquid. Lower the probe through the riser and fix it with the cap and ring kit. Connect the cable to the console and set the tank in the console. Check the product and water readings against a dip. Clean the floats when residue builds up.

Requesting a quotation for the Veeder-Root MAGPLUS-OIL

Please send the liquid, the probe length and the console type. Seven Star LLC serves industrial customers in Oman and the GCC and replies with a quotation based on the information provided.

MAGPLUS-OIL versions

The part 0846397-3xx has water detection and 0846397-6xx has none.

MAGPLUS-OIL inventory use

Both versions are for inventory only and give no leak detection.

MAGPLUS-OIL listed liquids

The datasheet lists fuel oil #4, motor oil, 90W gear oil, transmission fluid, toluene and high-density biodiesel.

MAGPLUS-OIL float kits

Float kits come in 2 inch and 4 inch sizes for alternative fluids, light oil and heavy oil.

MAGPLUS-OIL product accuracy

The product accuracy is plus or minus 0.762 mm.

MAGPLUS-OIL repeatability

The repeatability is 0.200 mm.

MAGPLUS-OIL lowest product level

The lowest measurable product level is 8.2 cm with 2 inch floats.

MAGPLUS-OIL lowest water level

The lowest measurable water level is 2.2 cm with 2 inch floats.

MAGPLUS-OIL temperature

The working range is minus 40 to plus 50 degrees C, with a five-point average.

MAGPLUS-OIL probe lengths

The probe length runs from 48 to 144 inch.

MAGPLUS-OIL riser accessories

A 4 inch NPT riser cap and ring kit is listed as 0312020-952.

Tank records for the MAGPLUS-OIL

Record the tank number, the float kit part and the date of each dip check.

Choosing the right MAGPLUS-OIL float kit

Choose the heavy oil float kit for dense liquids and the light oil kit for fuel oil #4 and similar liquids.

Documents and quotation

The Veeder-Root light and heavy oil Mag Plus datasheet is attached to this page as a PDF. Send us the product, tank depth and console so that we can select the right float kit and quote the probe. Seven Star LLC is an independent supplier in Muscat; price and lead time are confirmed per RFQ. Related range: level instrumentation.