Gems Sensors & Controls
The Gems Sensors & Controls (Gems) story began over 50 years ago in 1955 when the company founder, Edward H. Moore, developed a level indicator in his basement. It was patented in 1959. Along with an associate, Gordon Seigle, he established the Gems Company (GS for Gordon Seigle, EM for Ed Moore). read more
Today, Gems designs and manufactures a broad portfolio of liquid level, flow switches and pressure switches, miniature solenoid valves, and pre-assembled fluidic systems. Gems is a division of Danaher Corporation, a fortune 500 company with a presence around the globe.
Gems delivers personal attention, engineering expertise, and technical support to reduce development risks, improve the understanding of design issues, and quickly identify the right solutions. Decades of application engineering provides the perspective and experience to quickly prototype, build, and deliver components, sub-assemblies or systems exactly to your critical requirements.
Select a Filter Below
- CATEGORY
- Flow Meters ()
- Turbine / Paddlewheel Flow Meters ()
- Flow Indicators ()
- Flow Switches ()
- Level Instruments ()
- Level Indicators / Controllers ()
- Level Switches ()
- Level Transmitters ()
- Panel Meters / Digital Indicators ()
- Process Controllers ()
- Temperature Switches ()
- APPLICATION
- ()
- ()
- ()
- ()
- ()
- ()
- ()
- ()
- ()
- ()
- ()
- ()
- ()
- ()
- ()
- ()
- ()
- ()
- ()
Highly accurate and repeatable turbine flow sensors designed for low flow OEM applications.
Durable single point level switches for long, trouble free service
Starting at
$37.00
Ideal for detection of improper flow rates in high volume lubrication, cooling or process systems
Starting at
$233.00
Compact flow switch for inline pressures up to 1500 psi
Starting at
$122.00
Ideal for OEM applications involving low flow liquid monitoring
Compact flow switches are ideal for use where space is at a premium
Starting at
$112.00
Paddlewheel flow meter with high visibility rotors and 4.5 to 24 VDC Pulse Output
Starting at
$134.00
High pressure, metal paddle switch senses liquid flow in either direction to monitor flow/no-flow conditions
Starting at
$246.00
Exceptionally rugged and accurate float level switch for high performance applications
Starting at
$98.00
Makes flow protection economical for a broad range of industrial applications
Starting at
$99.00
Thermal dispersion technology provides a robust flow switch with no moving parts
Starting at
$398.00
Combines a level and temperature switch into a single instrument
Starting at
$111.00
Continuous, non-contact level measurement for midsize tanks of ultra pure, corrosive or waste liquids
$1,315.00
Bracket mounted level switch with slosh shield to minimize turbulence
Starting at
$165.00
Precision-calibrated flow switches for reliable and consistent performance
Starting at
$214.00
Economical float-type level switches for shallow tanks or restricted spaces
Starting at
$46.00
Mechanical tilt float level switch for applications in difficult liquids such as sewage and waste water
Starting at
$108.00
Level switch with weighted collar can be suspended in stand pipes dropped into wells
Starting at
$127.00
Rugged stainless steel float level switches for corrosive liquids and high temperatures and pressures
Starting at
$92.00
High performance electro-optic level switch designed to provide a range of capabilities including sinking, sourcing & time delay outputs
Starting at
$150.00
The smallest electro-optic liquid level sensor available from Gems
Starting at
$83.00
Non-contact ultrasonic level sensor with no moving parts, built for challenging fluid measurement in small tank applications
$782.00
Level switch designed as overfill protection for refrigerant tanks
Starting at
$85.00
Float level switch withstands rough service while providing excellent stability for general use in oils and water
Starting at
$55.00
Highly accurate, general purpose flow switch with 90° flow path
Starting at
$206.00
Ideal for large or small tanks or where access to the inside is impractical or impossible
Starting at
$285.00
Externally adjustable flow switches offer an infinite number of flow settings at pressures up to 1000 psig
Starting at
$427.00
Proven turbine technology in a small package for low flow applications
Starting at
$126.00
Paddlewheel flow meter with high visibility rotors and 0-10 VDC Analog Output
Starting at
$231.00
Large-body inline flow switches deliver ample flow rates with minimal pressure drop
Starting at
$335.00
Low cost flow monitoring with a variety of switch actuation points and low pressure drop
Starting at
$83.00
Float level switch is ideal for high viscosity fluids and rough service
Starting at
$64.00
Low cost, compact, optical, level sensors with built-in switching electronics
Starting at
$115.00
Installation through the tank wall solves the problem of inaccessible tops or bottoms
Transparent PVC housing is ideal for use where visual flow confirmation is desirable
Starting at
$91.00
Liquid level control for applications where only direct current power is available
Starting at
$371.00
Combines visual confirmation of flow with dynamic, electronic switch operation
Starting at
$242.00
Flow switch with a unique, dual-diameter, internal bore and piston configuration to minimize flow constriction
Improves the way you visualize data received from liquid level transmitters
Starting at
$1,162.00
Conductivity based liquid level control is the ideal choice where pump up or pump down service is necessary
Starting at
$158.00
Engineered for general purpose single-level or differential applications
Starting at
$155.00
Bent stem switches for mounting into the side of tanks and other vessels
$78.00 to $128.00
Precision flow switch with 1% repeatability for low flow applications
Starting at
$266.00
Intrinsically safe monitoring panel for simple tank monitoring needs
Starting at
$732.00
Large sized, float level switch particularly well suited for rough service
$82.00
Rugged, all-stainless steel unit offers broad chemical compatibility and installation through the tank wall
Starting at
$346.00
Conductivity based liquid level control in open circuit board or module designs
Starting at
$136.00
Low cost inline flow switch mounts outside the tank
Starting at
$175.00
Conductivity based plug-in liquid level control module
Starting at
$232.00
High temperature optical level sensors with built-in switching electronics
Starting at
$108.00
Designed to control two independent level functions: one single-level control operation and one differential-level operation
Starting at
$188.00
Compact, optical level sensor with chemically resistant Teflon body for ultra-high purity applications
Starting at
$273.00
PTFE float offers broad chemical compatibility and low particle generation
Starting at
$301.00
Large sized, Teflon float resists build-up of foreign material or sticky media
$474.00
Unique piston design assures accuracy over a full range of viscosities for applications where liquids of different viscosities are blended
Starting at
$247.00
Intrinsically safe conductivity based liquid level controls
Starting at
$399.00
Alarm panel for non-hazardous liquid monitoring applications
Starting at
$555.00
An ideal solution to liquid level problems in hazardous applications
Starting at
$956.00
Plug-In low-water cutoff module meets CSD1 requirements for boiler low-water cutoff
Starting at
$235.00
Contains the components necessary for assembly of a 1- or 2-station level switch for pipe-plug mounting in your tank
Starting at
$420.00
Intrinsically safe alarm panel control in a single package
Starting at
$681.00
Flange mounted optical level sensor for installations without threaded holes
Starting at
$127.00