Since 1955, Gems Sensors has earned a solid reputation for accuracy and dependability in marine service. Gems marine products are approved and qualified to MIL-L-23886, the military specification for fluid level sensors. Other military qualifications include MIL-S-901C, Shock Test High Impact Shipboard Machinery, Equipment and Systems…MIL-STD-167, Mechanical Vibration of Shipboard Equipment Vibration...Inclination, Bureau Veritas, Lloyds, ABS and USCG. Commercial vessel approvals include UL, CSA, and FM. Typical applications are shipwide and include high, low and/or intermediate level alarms, automatic pump-up and pump-down control, single-point, multi-point and continuous level monitoring, flow confirmation, and pressure switch monitoring in:


Auxiliary generator fuel tanks
Bilge level detection
Fuel oil storage tanks

Potable water storage tanks
Deck flooding alarms
Ballast tanks

Hydraulic system reservoirs
Gray water tanks
Cooling systems

Coolant tanks
Bilges and Voids
AFFF Tanks

Day tanks
High level alarms for closed loading
Lube oil and lube sump tanks

Gems marine sensors are built purposefully rugged to accommodate harsh conditions including turbulent liquids, liquids containing foreign material, liquid interfaces, high temperature and high pressure fluids. Construction materials include bronze, 304 or 316 SS, monel and copper-nickel alloys. Standard floats are of Buna N for oils, stainless steel for high temps, and Hycel (epoxy) for high pressures. Mounting flanges and electrical connections per Navy specifications are routine at Gems.
Call 1-800-378-1600 and ask to speak to a Marine Product Representative today!


Navy/Government
For many years, the U.S. Navy has relied on the consistent accuracy and dependability of Gems switches in virtually every type of vessel, from surface to undersea. Gems marine products are approved and qualified to MIL-L-23886, the military specification for fluid level sensors. Other military qualifications include MIL-S-901C, Shock Test High Impact Shipboard Machinery, Equipment and Systems, MIL-STD-167, Mechanical Vibration of Shipboard Equipment, Inclination, Bureau Veritas, Lloyds, ABS and USCG. Click on the parts below to view the product specification pages.









Commercial
At the same time, Gems MarineGrade™ products have earned wide acceptance in the commercial marine industry. Commercial vessel approvals include UL, CSA, and FM. Gems engineers are very familiar with and experienced in the various aspects of shipboard requirements. Producing qualified sensor products to meet custom designs has long been our regular practice. With literally hundreds of these service-proven units documented on approved drawings, the solution to your fluid indicating problem is very likely a "standard" for us. Click on the parts below to view the product specification pages.