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1" Magnetic Liquid-Level Gauges for LP Gas Service

8900-B8900 Product Photo


Gauging LP Gas levels in ASME tanks and DOT Cylinders.

General Information & Features

This series of 1" NPTF Junior gauges is available with forged brass head.

Now with R3D®.

The Rochester Remote Ready Dial, R3D®, is a magnetically-driven, Hall Effect compatible dial. Dials are utilized on stationary applications where direct reading plus an electrical signal to a remote fuel level monitor may be required.

Rochester’s Hall Effect Module is designed to snap-fit into the recess in the Remote Ready Dial lens. Once installed, the module can provide ratiometric voltage output proportional to the liquid volume inside the tank.


B8900 Series Data Sheet

8900 Series Gauge Installation Instructions DS-629

MS-516 Installation Instructions

Model Head Material Mounting Dial Type
B8981 Brass Top R3D® Direct Read, Screw-on
B8981-02000 R3D® Direct Read, Snap-on

General Specifications*


Extremes are -40°F to 158°F, -40°C to 70°C.

Working Pressure

375 psig [25,8 Bar]


Accuracy depends upon proper gauge sizing and is typically ±5% of R3D® dial indication. Accuracy may be less due to variations in liquid temperature. Accuracy may be less for some tank shapes and sizes. Accuracy may be less if tank is not level. Accuracy may be less near empty and full. This gauge is not to be used for filling. R3D® dial output voltage is typically ±4% of indicated reading. All accuracy estimates are percent of full scale.


Gauge is UL listed for LP Gas service applications.
R3D® Module is UL Classified as intrinsically safe.

When Ordering Specify:

1. Specify tank diameter (shown on tank nameplate).

2. Specify the gauge mounting location.

3. State they type of cylinder, horizontal or vertical.

4. Specify the "H" dimension. This is the distance in inches from the surface of the tank to the top of the threaded opening.

To order replacement gauge, simply furnish the information stamped on the hex wrenching flats as shown on example.

Materials of Construction*


Brass forging.

Centershaft Bearings, Pinion Gear, Cross Stud & Bearing, & Sector Gear

Stainless steel.

Gear Housing


Support, Centershaft & Float Rod

Tempered aluminum.


Nitrile rubber.





Direct-reading Dials

Hermetically sealed polycarbonate.

R3D® Direct-reading Dial

Hermetically sealed polycarbonate.

*Materials and specifications are subject to change without notice. Pressure ratings subject to change due to temperature and other environmental considerations.