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TwinSite® Switch


Rochester TwinSite® switches are utilized where direct-reading plus electrical contact closure is required. Models are available to fit all Rochester Junior® and Senior® gauges with large magnets.

Note: Some applications require use only with intrinsically-safe circuits.

General Information & Features

These TwinSite® Switches use a conductive ink switch base in conjunction with a multi-fingered contact arrangement. This unique combination in the liquid level-gauge industry provides better inherent accuracy and reliability.

A typical switch would be open from full down to one-eighth and closed from one-eighth to empty.


Data Sheet

General Specifications*

Contact Resistance

0.2 ohm maximum.

Rotation Life

Up to 50,000 cycles.

Operating Temperatures

-40° F to 176°F, -40°C to 80°C.




±3% (Float gauge errors not included.)

Maximum Voltage

24V AC tor DC.

Maximum Power

0.5 watts.

WARNING! This sensor is not to be used as the primary means of determining high or low fuel condition. It must not be used in the absence of redundant systems in critical applications where there may be significant safety risk or financial exposure in the event of fuel overfill or fuel exhaustion condition. This sensor is not to be used for tank filling.

Materials of Construction*

Switch Element

Conductive ink.



Crystal & Case

Polycarbonate, ultrasonically sealed.




How to Order

Refere to Price List D6200 for LP Gas switches and Price List P6200 for Industrial switches.


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