L.L. Rowe Company

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Design...

Innovative and experienced product engineers are available to assist you with special requirements. We will custom manufacture product you require in quantities from one to many thousand.

Below are the samples of some of the products that L.L. Rowe engineers developed for our customers

WATER SENSING HEATED ELECTRODE

This is a new fully automatic generation of heated electrode originally designed to NavSea Dwg 1197032, Symbol 3007-3010. This electrode ensures closure of the snorkel head valve and main induction valve during submergence.

Specifications:

Automatic Heating from 2 to 21 Deg. C
Solid-state Temperature Controller
Relay output to 200 milliAmp
120 VAC/60 HZ input
Operating Range -40 to 66 Deg. C

Development Includes:

Shock Testing (Wetted Surface)
Vibration Testing (to 25 Hz)
Pressure Testing (to 2000 psi)
Temperature Testing (-55 to 71 Deg. C)

Custom Applications are Available - Call for More Information

SUBMERSIBLE ELECTRONIC LIMIT SWITCH (SELS)

The Submersible Electronic Limit Switch (SELS) was developed by L.L.Rowe and Electric Boat for US Navy VIRGINIA Class submarine outboard launcher and weapons systems applications. The SELS provides precise, repeatable and reliable position sensing in the extreme sub-sea environment. Additional systems and classes of ships also use the SELS. The SELS is fully qualified to VA Class military requirements.

The SELS is a connectorized, stainless steel, hermetically sealed, pressure-proof cube approximately 3.5” on a side. The major components internal to the SELS are linear variable differential transformers (LVDT) and the interfacing LVDT signal conditioning printed circuit board (PCB). The SELS has two independent channels capable of monitoring two separate actions, or to provide redundancy for a single action. Position sensing is provided from either of two cube faces. The SELS uses an LVDT in concert with interfacing circuitry for each channel to sense the proximity of an external ferrous pellet. The ferrous pellet is encased in a stainless steel probe for strength, a means of attachment, and to prevent corrosion. In most cases, the probe is attached to the component whose position is being monitored. The SELS can also be attached to the moving component while the probe remains stationary. Each channel of the SELS provides a SPST contact closure for position sensing. In addition, a single tell-tale signal, derived from both channel relays in series with the excitation power is provided.