Level Sensors

Single Level switches

Stainless Steel

Large size

Stainless steel switches are ideal for high temperature and pressure applications. Rugged construction allows these units to be used for reliable switching in a wide variety of chemicals, oils and water in harsh environments.
Operating Temp: -40° to +300°F

Small size

Stainless steel switches are built for use in constrained areas and still deliver under pressure and in high temperature applications. Various floats are available to suit many different situations. These cost effective units are ideal for OEM applications in machinery and equipment where space is limited.
Operating Temp: -40° to +300°F

Brass & Buna-N

Brass and Buna-N units are ideal in oil and water applications. Always use the largest float possible in your application for the highest buoyant force which delivers the most reliable operation.

Specifications:
Material-Stem: Brass
Material-Float: Buna-N
Operating Temp:
Water: up to 180°F
Oil: -40° to +230°F

Plastics

Plastic float switches are ideal in highly corrosive water and chemical applications. Units are PVC or Polypropylene. See page 20 for part numbering details.

Specifications:
Material: Polypropylene or PVC

Multi-Level switches

Stainless Steel

Stainless Steel Multi- Level switches
are ideal for operation in water, oils and chemicals in high temperature and pressure applications.

Series 2000
o 1/2" Diameter Stem
o Up to 15 Feet Long
o Float Diameters from 1 1/4"to 2.0"

Series 1000
o 5/16" Diameter Stem
o Up to 6 Feet Long
o Float Diameters from 3/4" to 1 1/4"

Temperature Sensing
o Continuous indication on both Series 2000 and 1000
o Thermostat Settings on Series 2000
o See Page 20 for Specifications

Adjustable Mountings are available on both series 2000 and series 1000 units for mounting types B, C, and D. This feature allows the vertical stem position to be adjusted in the field to fine tune switch points.

Junction Boxes and Relays can be ordered to function with multi-level units to enhance control capabilities; see page 18 for details.

Brass & Buna-N

Brass and Buna-N Multilevel Switches are ideal for operation in oils, fuels and most solvents and chemicals.

Series 2000
o 1/2" Diameter Stem
o Up to 15 Feet Long
o Float Diameters from 1 1/4"to 2.0"

Series 1000
o 5/16" Diameter Stem
o Up to 6 Feet Long
o Float Diameters from 3/4"to 1 1/4"

Temperature Sensing
o Continuous indication on both Series 2000 and 1000
o Thermostat Settings on Series 2000
o See Page 20 for Specifications

Adjustable Mountings are available on both series 2000 and series 1000 units for mounting types B, C, and D. This feature allows the vertical stem position to be adjusted in the field to fine tune switch points.
Junction Boxes and Relays can be ordered to function with multilevel units to simplify installation and enhance control capabilities; see page 18 for details.

Plastics

PVC and Polypropylene Multi- Level switches are made for operation in water and chemicals where metallic units are not desired. SPST and SPDT switch configurations are available at various points to fit a wide range of applications.

Series 2000
o Large Diameter Stem
o Up to 10 Feet Long
o Float Diameter to 2.0"

Series 1000
o 5/16" Diameter Stem
o Up to 6 Feet Long
o Float Diameters from 3/4"to 1"

Temperature Sensing
o Continuous indication on both Series 2000 and 1000
o Thermostat Settings on Series 2000
o See Page 20 for Specifications

Adjustable Mountings are available on a limited basis for plastic multilevel switches. Please consult the factory for assistance with a specification.
Junction Boxes and Relays can be ordered to function with multilevel units to enhance control capabilities; see page 18 for details. Junction boxes are only available on units with 1/2" conduit adapters.

Special Applications

Interface Level

Interface Level switches are built to monitor or control the liquid level interface of two liquids with different specific gravity values. A common application is oil and water in the same tank. Because oil is lighter than water it will collect on top of the water. An interface float is weighted to sink through the oil and float on the water to monitor what is called the interface level. Another float which will float on the oil can be used to monitor the rising oil level and signal an alarm or start a pump to remove the oil.

Standard interface floats are .91 specific gravity ...other weights available upon request.

Teflon - FL-1500 Series

This series is an example of INNOVATIVE product development. All wetted parts are made of Polytetrafluoroethylene, commonly known as Teflon. Teflon provides exceptional chemical, mechanical and thermal properties for a multitude of applications. If your application requires high purity or is highly corrosive to stainless steel, brass, polypropylene or PVC, then the FL-1500 may be the answer to reliable liquid level switching.

Maximum Temperature: 450° F
Maximum Pressure: 200 PSI

Bracket Mounted Switches - BLS-270 Series
Bracket mounted for easy installation. Water tight, six foot electrical cable. Slosh shield float protection eliminates problems with turbulence. Stainless Steel Bracket, Lexan Shield, PVC Cable.
Maximum Pressure: 150 PSI Standard Contacts: 25VA SPDT
Aluminum Fuel Switches AFS Series
The AFS series is ideal for use as a low level fuel switch in mobile equipment. A Buna-N Float is housed in a light weight aluminum slosh shield to prevent switching due to turbulence. The unit is available in three switch configurations.

External Bottle Switches - EBS Series

External Bottle Switches with Mounting Brackets Solve More Installation Challenges!
Housing: Bronze
Float: 316 Stainless Steel
Temperature: Up to 300°F
Pressure: Up to 500 PSI
Switch: 25 VA SPDT

Liquid Level Control & Indication

Level Keeper Indicator Boxes Series

LKI boxes are a convenient solution for liquid level Indication and control. An engraved LED indicator panel is set inside an attractive polycarbonate Nema-4x enclosure. User selectable outputs for pump control and alarms makes the LKI series a versatile companion to any multilevel sensor.

o Weather Proof Enclosure
o 12VDC Power
o Two User Defined SPDT 3A Outputs
o Monitor up to Six Levels in a Tank

Simple-Site Indicators Series

These units provide an easy to read indication of level information. There is no liquid in the indicator tube. A highly visible indicator which is outside the liquid follows a float which is in the liquid to provide an accurate location of liquid level.

Switch Points are available along the length of the unit for alarms and/or controls.

Tube fittings or Flange Connections are available for convenient mounting to the outside of a tank.

Liquid Level Tape Measure LLTM-2000 Series

These convenient units are ideal for storage tanks and transportable containers. The LLTM-2000 units are easy to operate and offer a closed system solution for containers which are transported frequently.

A liquid level reading is taken by slowly pulling the tape out of the housing. When the liquid level point is reached, the tape locks-in at the position of the internal float. The level measurement is then read directly off the tape measure. After a reading is taken, the tape is securely stored in the housing.

Units are available up to 60" long in Stainless Steel, Brass and Buna-N or PVC.

All units are 2" NPT mounted with 2" diameter floats.

Level Keeper Indicator	Simple-Site Indicator

Accessories

Solid State Control Relays

Power Relays and Latching Relays work with the level switches in this catalog to control higher power devices such as pumps, alarms and contactors.

Delrin Junction Box

Mount directly to top of Multilevel Switches for convenient wiring.

o Made of Durable Plastic
o Integral Terminal Strip
o Gasketed Cover