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Process Control & Measurement > Level Sensors & Controllers
Level Sensors and Controllers
Level sensors monitor the level of liquids, pellets, powders, and other similar products in tanks and process systems. Available ProSense and other series include contact, non-contact and submersible sensors, as well as float level and proximity switches. Flowline series controllers add the ability to control alarms, pumps, valves and other industrial equipment.
Level Sensors and Controllers
Category Selection
- Flowline Reflective Ultrasonic Level Sensors
- Flowline Ultrasonic Level Sensors
- Flowline Level Sensors
- Flowline Level Controllers
- Guided Wave Radar Level Sensors
- Float Level Switches
- Vibration Fork Level Switches
- Submersible Level Sensors
- Liquid, Gas and Steam Differential Pressure Transmitters
- Proximity Level Sensors
- Flowline® Reflective Ultrasonic Level Sensors
(Non-contact) - Flowline® Ultrasonic Level Sensors (Non-Contact)
- Flowline® Level Sensors (Contact)
- Flowline® Level Controllers
- ProSense® Guided Wave Radar Level Sensors
- ProSense® Float Level Switches
- ProSense® Vibration Fork Level Switches
- ProSense® Submersible Level Sensors
- Liquid, Gas and Steam Differential Pressure Transmitters... New!
- Proximity Level Sensors
Flowline Reflective Ultrasonic Level Sensors (Non-Contact) ... New!
Non-contact EchoPod and EchoTouch reflective ultrasonic liquid level sensors feature Flowline's proprietary Reflective Technology™ that delivers reliable level measurement in condensing environments. Both general purpose and intrinsically safe versions are available with single and multifunction capabilities, including continuous level measurement, switching and control.
- The standard 4-20 mA output is easily monitored by a PLC or other controller
- Relay models can be configured for level alarms and/or stand-alone level control
- Configured using WEBCAL software (limited pushbutton configuration also available)
Flowline Ultrasonic Level Sensors (Non-Contact)
The Flowline EchoPod®, EchoSonic® II, Echotouch®, EchoSpan® and EchoSwitch® are innovative ultrasonic liquid level sensor families that replace float, conductance and pressure sensors that fail due to contact with dirty, sticky and scaling liquids in small, medium and large capacity tanks. These liquid level sensors can be used in either open or enclosed tanks (not suitable for pressurized tanks). PC software configured or pushbutton configured models are available.
Software Configured Ultrasonic Level Sensors Overview
Flowline Level Sensors (Contact)
Ultrasonic Level Switches:
are intrinsically safe and provide reliable liquid level detection of chemical, solvent, hydrocarbon and petroleum based liquids.
Vibration Point Level Switch:
provides reliable liquid level detection of dirty liquids such as those with light to medium coating, scaling or foaming characteristics.
Capacitance Level Switch:
provides reliable high or low liquid level detection of water based conductive liquids with light coating, crystalizing or scaling characteristics with a 1A relay output.
Buoyancy Level Switch:
provides reliable liquid level detection of relatively clean water and chemical solutions.
Flowline Level Controllers
Switch-Pro™ general purpose level controllers are available in three discrete sensor input configurations for alarms, pump and valve control. The LC52 DataPoint™ general purpose controller for analog sensor inputs provides single tank level indication with 2 relays, up to three setpoints and an isolated analog repeater.
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Switch-Pro LC40 Remote Level Controller:
one level sensor input and one non-latching 10A relay output for high level or low level alarm -
Switch-Pro LC41 Remote Level Controller:
two level sensor inputs and one latching 10A relay output for automatic fill or empty control -
Switch-Pro LC42 Remote Level Controller:
three level sensor inputs and one latching 10A relay output and one nonlatching 10A relay output -
DataPoint LC52 Remote Level Controller:
one 4-20 mA input, two relay outputs, One 4-20 mA output
Guided Wave Radar
Level Sensors
... New!
ProSense GWR Series liquid level sensors are a low-cost solution to measure levels of water- or oil-based media, and soiled, viscous liquids or liquids that are prone to formation of deposits. These units can provide both continuous as well as point level measurements, via switch and analog outputs. The rugged 316 stainless steel housing is IP68/IP69K rated.
- Switch and analog outputs for both continuous and point level measurement
- Probe and coaxial tubes available from 240mm to 1600mm lengths and can be cut to adapt to specific level application
- Easy setup using pushbuttons and display on unit
Float Level Switches
ProSense float level switches provide a low-cost general purpose solution for single point monitoring of liquid level in a variety of applications. These switches are available in several different material constructions for compatibility with many types of liquids, a wide temperature range, and various system pressure requirements. Vertical and horizontal mounting styles with several mounting thread variations are available for ease of installation.
- Vertical Top-Mount
- Vertical Suspendible / Submersible
- Horizontal Side-Mount
- Float Level Switch Kits
- Float Level Tilt Switches
Vibration Fork Level Switches
ProSense VFL Series liquid level switches are offered in two process connection sizes with short and extended insertion lengths, standard and high temperature constructions, and a 3-wire DC switch output for connection to controller inputs or a 2-wire AC/DC switch for control of valves and pumps.
- 1/2" or 3/4" male NPT process connection
- Short (1.89") or Extended (3.44") insertion lengths
- Standard or high process temperature ranges: -40 to 212°F or -40 to 302°F
- Ideal for applications not suitable for other liquid point level technologies due to conductivity, turbulence, buildup, air bubbles, foam, pressure, temperature, and viscosity changes
Submersible Level Sensors
The ProSense SLT series submersible level sensors provide continuous liquid level measurement by sensing the hydrostatic pressure produced by the height of liquid above the sensor and providing a 4-20 mA output signal compatible with PLCs, panel meters, data loggers, and other electronic equipment.
- SLT1 Series Transmitter with 1-inch Diameter Housing
- SLT2 Series Transmitter with 2.75-inch Diameter Diaphragm and Protective Cage
- Submersible Level Transmitter Vent Filter
- Submersible Level Transmitter Bellows
- Junction Boxes for Submersible Level Transmitters
- Submersible Level Transmitter Replacement Nose Caps
Liquid, Gas and Steam Differential Pressure Transmitters ... New!
The ProSense DPTW series differential pressure transmitter series is precision engineered for accurate differential or gauge pressure measurement of a wide variety of liquids, gases, and steam applied to both pressure sensing ports.
- Wet-wet design ideal for liquid, gas, and steam measurement of differential, positive, or negative pressures, hydrostatic liquid level, and flow
- Integral pressure port manifold with 1/4 inch female process connections and built-in equalizing valve
- Digital filter function to dampen pulsations and provide a more stable output and display
- Bright backlit 6-digit LCD display
- Rugged NEMA 4X (IP65)
Proximity Level Sensors
Capacitive: AutomationDirect offers a variety of capacitive level sensors. NPN and PNP logic outputs and normally open or normally closed output models are available. All capacitive proximity sensors have LED status indicators to verify operation at the switch; and all capacitive proximity sensors are IP65 or IP67 rated.
Ultrasonic: SU, UK, UT and TU series round body reflective ultrasonic distance sensors emit a sound impulse and measure the elapsed time of the returned echo signal reflected off of a detected object.
Capacitive and ultrasonic proximity sensors.
- 12mm Round Capacitive Proximity Sensors (CM1 Series)
- 18mm Round Capacitive Proximity Sensors (CK1 Series)
- 30mm Round Capacitive Proximity Sensors (CT1 / CTV Series)
- Rectangular Capacitive Proximity Sensors (CR1 Series)
- Ultrasonic 18mm Proximity Sensors (UK / SU Series)
- Ultrasonic 30mm Proximity Sensors (UT / TU Series)
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