Float Type Multi-Point Custom Length – 1 to 7 Levels GEMS Custom Length level switches are extremely versatile. Within this section you’ll find level switches that are configured to your custom specifications at the GEMS factory. Single Actuation Levels LEVEL SWITCHES – MULTI POINT When one of our Standard Single Level switches doesn’t extend to the length you need, no problem, order a Custom Length single level switch from this section. Specify lengths to over 11 feet. These units also offer you the flexibility of mounting a low, or intermediate level switch from the tank top rather than a bottom or side mounting. Levels. As Lengths to GEMS Custom Length models can be Many as Seven over 11 Feet configured with “up to seven” independent switch actuation levels, depending on the series type. These “multi-station” units offer the most practical way to monitor multiple liquid level points within a single tank. Only a single entry point into the tank is required, and all electrical wiring emanates from a single source. In addition to tracking changing level points of a single liquid within a tank, “multi-station” level switches are ideal for monitoring liquid interfaces and emulsions in vessels simultaneously containing two or more liquids. Contact GEMS with your liquid specifications for further information on this type of application. Typical Application GEMS Custom Length Switches are used to monitor water, diesel or lube oils, chemicals and petrochemicals. Pump-Up/Pump-Down Operations Pump-Up/Pump-Down with Intermediate Level Indication ANNUNCIATOR HIGH LEVEL HIGH LEVEL CONTROLLER INTERMEDIATE LEVELS Using GEMS Custom Length level switches, junction boxes, solid-state relays and annunciators, complete liquid level control systems are easily configured. Liquid Interface Monitoring In addition to monitoring the surface level of liquids, many GEMS Level Switches can be used to sense the interface point between dissimilar liquids sharing the same tank. Monitoring water condensation in fuel storage tanks, and separating chemical emulsions in process systems are two typical application examples. Multi-station level switches can be configured to monitor this interface point in addition to high and low liquid levels. Contact Gems Sensors Inc. with your specific application. B-1 Visit www.GemsSensors.com for most current information. HIGH LEVEL MONITORING INTERFACE LEVEL FLOAT (EXAMPLE: OIL/WATER) LOW LEVEL MONITORING

INTRODUCTION Contents Page Start Ultrasonic — Non-Contact Multi-Point Sensors Accurate and reliable sensing method Ideal technology for difficult fluids Typical Media • Acids • Wastewater • Inks and Paints • Slurries • Food and Beverage • Semiconductor Process Chemicals • Oils and Petroleum Distillates Small Size Alloy Large Size Plastic LEVEL SWITCHES – MULTI POINT Gems delivers the answer for challenging fluid measurement with our new ultrasonic UCL-510 Transmitter/Multipoint Level Switching Combo. This accurate and reliable sensor is designed for the most difficult fluids to monitor — including...

Small Size – Engineered Plastics Ordering is Easy! See Page B-6. Easy online ordering too! LS-300 Engineered Plastics Series Brings Multi-Point Switching to Shallow Tanks Your most complete line of small, polysulfone liquid level switches...all from Gems Sensors. LEVEL SWITCHES – MULTI POINT All-Plastic Wetted Parts 1 to 4 Actuation Levels Lengths to 20 inches (50cm) U.L. Recognized; CSA Listed Versions Available Designed for the high quantity needs of the OEM, LS-300 Series Switches are the ideal level sensor for shallow tanks and reservoirs. Compact and versatile, these low-cost, plastic level...

FLOAT TYPE 2. Electrical Connections Type 3 Liquid-Tight Cable Type 4 Junction Box Assembly LEVEL SWITCHES – MULTI POINT Compatible Mounting Type(s) Protection Rating Extended Leads Max. Number of Levels Group I 3. Float Types A single float type is selected for use at all actuation points. Buna N Float Material Float Dimensions Part Number Float Material Suitable for… Operating Temperature1 Polypropylene Polysulfone Hollow – 20% Glass Filled Solid Foamed Water-based Liquids Low Specific Gravity Liquids Pressure, psi (bar) Max.2 Min. Media Specific Gravity Notes: 1. Operating temperature range...

5. Wiring Group YELLOW (4) LEVEL SWITCHES – MULTI POINT Approvals: LS-300 Series switches are U.L. Recognized – File No. E45168; CSA Listed – 30200. Notes: 1. Units with 50 and 100 VA switches are not U.L. Recognized or CSA Listed. 2. Other wiring options available. Consult factory. 3. Consult Factory for load information. Group II Wiring: 1 or 2 Actuation Levels. Lead Wire (*) Group I Wiring: 1 to 4 Actuation Levels. Electrical Connection Typically, one float is required for each point at which you need a switch action to occur. The number of actuation levels available depends on the Group Type...

This is a Request for a Quote Order P.O.#_______ 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:_____________ Partials Accepted: Yes No Name ___________________________________________ Company _________________________________________ Street ___________________________________________ City________________________ State_____ Zip__________ Phone ( _____ ) ___________________________________ Fax ( _____ ) ______________________________________...

Small Size – Engineered Plastics Ordering is Easy! See Page B-9. Easy online ordering too! LS-300TFE Series – All-PTFE Wetted Parts for Ultra-Pure Fluids Low Particle Generation-One piece Molded Design Corrosion Resistant 1 to 4 Actuation Levels in a Single Unit Lengths to 24 Inches LEVEL SWITCHES – MULTI POINT Typical Applications • Semiconductor Process Equipment • Pure Chemical Delivery System • Wafer Cleaning and Etching Systems • Cabinet Leak Sensing 1. Mounting Types Each mounting type can be configured with stem lengths (LO) and float materials indicated in this bulletin. Type 11, No Mounting...