Application

The Rochester Remote Ready Dial, R3D® – Industrial, is compatible with magnetically-driven, Hall Effect modules (9704 or 9705 series). R3D are utilized on industrial applications where direct reading plus an electrical signal to a remote fuel level monitor may be required.  Models are available to fit all Rochester Junior and Senior liquid-level gauges.

Rochester’s Hall Effect Module (9704 and 9705 series) is designed to snap-fit into the recess in the Remote Ready Dial (R3D) lens. Once installed, the module can provide ratiometric voltage output proportional to the liquid volume inside the tank.

The R3D and Hall Effect Module can be used as a retrofit on existing tank gauges to provide an electrical output which can be utilized for remote monitoring of tank levels. Existing tank gauges without an R3D dial can be retrofitted R3D dials. Remote monitoring of tank levels provides another source of level gauging in addition to manually checking dial gradients.

General Information and Features

In the area of fuels, lubricants and many other liquid measurements, a magnetic drive feature allows a signal from the float mechanism inside the tank to be transmitted through a solid bulkhead (the gauge mounting head). The R3D is designed to also allow a second magnetic coupling from the R3D pointer magnet, through the sealed lens and into the Hall Effect Module (9704 or 9705). Previous designs of magnetically driven dials that produce and electrical output signal had the disadvantages inherent in using variable resistors with a wiper arm contact. The magnetic connection of the Hall effect sensor is more reliable than systems that depend on the sliding contact of variable resistor devices. Hall Effect is a solid-state technology with no moving contacts. It counts on the fact that a magnet bends the path of electrons moving through a semiconductor. The bending of the electron path can be detected and converted into an electrical signal.

The R3D case is hermetically sealed by ultrasonic welding to melt and fuse the case into once solid piece. This keeps weather out, ensuring “no-fog” readability while greatly extending mechanical life. The seal is a high reliability, no-gasket design. The plastic case is far more resistant to corrosion than any metal-cased version and is capable of withstanding broad variations in temperature. The lens and case are a special, UV stabilized plastic material. The R3D dial is mounted onto Rochester Junior or Senior gauges with #0040-00416 stainless steel dial screws (6 – 32 x 3/8″).