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.
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.
Reflective ultrasonic level sensors start at
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 liquid level transmitters start at
Pushbutton configured ultrasonic level sensors/transmitters start at
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.
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.
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.
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.
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.
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.
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.