GEMS Continuous Electrical Output Transmitters Provide Direct Liquid Measurement Lengths to 18 feet (5.5 m) Alloys or Engineered Plastic Wetted Parts Analog Output Completely electronic, Gems Liquid Level Transmitters provide reliable and durable remote tank gauging. A wide variety of material combinations provide compatibility for most liquid media. Gems XM- & XT-300, 700 and 800 Series provide solutions for most small to mid-size tanks in both process and OEM applications; for deeper tanks (to 18 feet) look to Gems 36000 and 66000 Series. LEVEL SENSORS – CONTINUOUS Gems experienced engineering and sales staff can provide customized solutions for applications not satisfied by the standard transmitters shown in this catalog. Do not hesitate to contact Gems if you require a configuration not shown here. Single Probe or Complete Systems As a component, Gems transmitters provide the output options compatible with most programmable controllers and other digital receivers. Combined with Gems Digital Receivers you can create a complete tank gauging system. Typical Applications Consider GEMS’ versatile transmitters for all your continuous liquid level monitoring needs — water, diesel, lube oils and fuels, as well as various chemical and petrochemical liquids. Here are just a few areas where GEMS’ transmitters are used: • Utilities • Beverage Industry • Medical • Pharmaceuticals • OHV • Food Processing • Wineries • Printing • HVAC • Semiconductor Operating Principle Gems voltage divider design uses a staggered series of reed switches. As the float moves with the liquid level, the magnets in the float close these reed switches in a “2-3-2 at-a-time” sequence. With every movement of the float, either one additional switch closes or one drops off. TRANSMITTER HOUSING REED SWITCHES XT SERIES, SIGNAL CONDITIONED TRANSMITTER PERMANENT MAGNET FLOAT XT SERIES, SIGNAL CONDITIONED TRANSMITTER GEMS/DIGITAL RECEIVER GEMS Transmitters monitor water, diesel What does this mean to you? or lube oils, chemicals and petrochemicals Ensures better accuracy — if one switch was to fail, the signal would be in industries such as pharmaceuticals, affected only at that point. GEMS GEMS 4-20 mA SIGNAL CONDITIONER 4-20 mA SIGNAL CONDITIONER RECEIVERmunicipalities, breweries, textiles, automotive, RECEIVER YOUR INSTRUMENTATION OPTION Apulp and paper and others. OPTION A OPTION B OPTION B C-1 Visit www.GemsSensors.com for most current information. UNDERGROUND TANK YOUR INSTRUMENTAT XM SERIES NON-SIGNAL CONDITIONED TRANSMITTER CONDITIONE XM SERIES NON-SIGNAL UNDERGROUND TANK

FLOAT TYPE – INTRODUCTION Contents LOW SPECIFIC GRAVITY LIQUID HIGH SPECIFIC GRAVITY LIQUID Here's a tip. Gems Float Sensors are the best, most reliable method to monitor mud pits. See our Large Size Alloy models on Page C-23, and use with the 8" float for best results. Use multiple Gems Transmitters to accurately monitor proportions of dissimilar liquids and emulsions within a single tank. Page Start ABSOLUTE LEVEL TRANSMITTER Only a Float Can Show True Interface! LEVEL SENSORS – CONTINUOUS • By design or otherwise, dissimilar liquids often reside in the tank — one floating atop another. Most...

Small Size – Engineered Plastics Ordering is Easy! See Page C-5. Easy online ordering too! XM/XT-300 Engineered Plastics Series Brings Continuous Output to Shallow Tanks Your most complete line of small, polysulfone liquid level sensors...all from Gems Sensors. LEVEL SENSORS – CONTINUOUS All-Plastic Wetted Parts 4mm Resolution Indicating Length to 14˝ (35.5 cm); Stem Length to 20˝ (50 cm) U.L. Pending Designed for the high quantity needs of the OEM, XM/XT-300 Series transmitters are the ideal level sensor for shallow tanks and reservoirs. Compact and versatile, these plastic level sensors offer...

FLOAT TYPE 2. Electrical Connections Type 1 Leadwire Type 3 Liquid-Tight Cable Type 4 Junction Box Assembly Compatible Mounting Type(s) Protection Rating Extended Leads LEVEL SENSORS – CONTINUOUS 3. Float Types Float Material Part Number Float Material Suitable for… Operating Temperature1 Pressure, psi (bar) Max.2 Min. Media Specific Gravity Hollow – 20% Glass Filled Solid Foamed Water-based Liquids Low Specific Gravity Liquids Notes: 1. Operating temperature range based on float ratings. 2. When used with mounting Type 21, 32 or 22 only; Mounting Type 61, and 63 are not recommended for pressure...

Float Type Transmitters – Engineered Plastics Product Check List This is a Request for a Quote Order P.O.#_______ Name ___________________________________________ Company _________________________________________ Quantity Needed _____________ Photocopy This Form Use one form for each product type you are selecting. This form may also be completed online at gemssensors.com for RFQ. Date Required ____/____/_____ Shipping Method:_____________ XM/XT-300 Engineered Plastics Custom Length, Float Type Level Transmitter Check List Operational Parameters This information is essential to the accurate and...

FLOAT TYPE Small Size – Alloys Ordering is Easy! See Page C-8. Easy online ordering too! XM/XT-700 Series Combines Durability of Metal With a Compact Design for Restricted Spaces Stainless Steel or Brass Mountings and Stems 4mm Resolution Indicating Length to 14˝ (35.5 cm); Stem Length to 20˝ (50 cm) These compact units feature the rugged durability of stainless steel or brass construction in a lightweight package. Ideal for tanks less than 2 feet. LEVEL SENSORS – CONTINUOUS XM/XT-700 Series transmitters are exceptionally versatile because of the many useful options available. Each mounting type...

2. Float Types Polypropylene Float Materials Compatible Mounting Types Float Dimensions Part Number Operating Temperature LEVEL SENSORS – CONTINUOUS Pressure, PSI, Max. Min. Liquid Specific Gravity Float Materials Compatible Mounting Types Float Dimensions Part Number Min. Liquid Specific Gravity Operating Temperature * De-rated with temperature. ** -40°F to 300°F (Standard Construction) 301°F to 400°F (Ceramic Potting Construction Required) inches millimeters Options Integral Receptacle 3-5 Pin miniature receptacle for mounting Type 2, 3 or 7; eliminates splicing and eases connections. Conduit...