Righton Instrument Company
- Manufacturers of custom bubbler systems for level measurement and control.
- http://rightoninst.com

ABM Sensor Technology Inc.
- Manufacture ultrasonic and microwave level measurement devices of liquids and solids.
- http://www.abmsensor.com

KAB Instruments Ltd.
- Manufacture ultrasonic level measurement devices used to measure and control the movement and storage of liquids and bulk solids.
- http://www.kabinstruments.com

Conery Manufacturing, Inc.
- Manufacture of mercury and mechanical float switches, high and low water alarms, custom junction boxes, stainless steel chain, tank vents, float brackets and panel mount alarm light lenses.
- http://www.conerymfg.com/

Delta Controls Corporation
- Manufacture industrial level measurement and control instruments and sensors. Product data sheets and catalog available in pdf format.
- http://www.deltacnt.com

Solid Applied Technologies Ltd.
- Manufactures ultrasonic level measurement instruments requiring no calibration and radar level gauging instruments for commercial.
- http://www.solidappliedtechnologies.com/

Liquid Level, Inc.
- Manufactures liquid level sensors, controls, and switches.
- http://www.liquidlevel.net/

Techmark Corp.
- Manufacturer of capacitive level sensors that detect the level of water and liquids in non-metallic containers. Applications include spa, jetted tub, irrigation and drinking water tanks.
- http://www.tecmarkcorp.com/

Madison Company
- Manufacturer of liquid level switches. Full size and miniature switches in horizontal, vertical, multi-level and specialty styles.
- http://www.madisonco.com/

Charis Technology Limited
- Design and Manufacture of level control systems, specialising in foam sensors and foam control systems which are completely imune to fouling.
- http://www.charis.uk.com/

Phase Laser Inc.
- Manufacturer of precision fiber optic sensor systems for distance measuring instrumentation for industry, education, and research including a line of non-contact tank and container gauging systems.
- http://www.phaselaser.com/

BinMaster
- Electromechanical, solid state bindicators and point level control systems for level, flow, and dust detection controls including solid, liquid, powder, and slurry applications.
- http://www.binmaster.com/

Ohmart/Vega Instrumentation
- Manufactures tank level, density, and special process measurement instrumentation. Pulse radar, ultrasonic, and nuclear, for environments from sterile to extremely harsh.
- http://www.ohmartvega.com/

EMS - Engineering and Manufacturing Services
- Ultrasonic sensor and control solutions for industrial level and process control.
- http://www.emssensors.com/

Float Switch, Inc.
- Manufacturers of float switches, liquid level sensors, transducers, and solid-state controls for all industries.
- http://www.floatswitch.net

Eurotherm Controls, Inc.
- Suppliers of control and measurement instrumentation to the industrial and process markets.
- http://www.actionio.com/

Lumenite Control Technology, Inc
- Liquid level controls, timing controls, timers, switches, and sanitary probes. Engineers, designs, and manufactures Paneleveline controls, 3A sanitary pressure gauges.
- http://www.lumenite.com/

Thirty/Ninety Eight Company
- Manufactures level control indicators for bulk solids and liquids.
- http://www.the3098.com/

Flowline, Liquid Level Intelligence
- Manufacturer of plastic level transmitters, level switches and flow switches designed specifically for harsh acid, caustic and chemical solutions. Describes products and 10 alternative technologies including ultrasonic, capacitance, optic, radar, and ther
- http://www.flowline.com/

JC Controls
- Liquid nitrogen level controller. Automatic refill of liquid nitrogen traps.
- http://www.ln2.net/

Automation Products, Inc.
- Manufacturers Dynatrol process control instruments for oil, gas, food, chemical and a wide variety of process industries
- http://www.dynatrolusa.com/

Teklab S.a.s.
- Manufacturer of digital liquid level sensors.
- http://www.teklabweb.com/

A2D2 Electronics
- Bin level sensors provide a reliable, non-nuclear option in high temperature environments, such as lime kilns and power plant fly-ash bins.
- http://www.a2d2.com

STI Level and Flow
- Manufactures point or continuous level and flow sensing and detection products
- http://www.levelandflow.com/

Hawleys Engineering Solutions
- Supplies liquid level gauges, flow control equipment and sealing products.
- http://www.hawleys.com.au

Fiedler
- Low-cost water flow/level monitoring-recording system, field universal input datalogger, ombrograf, ultrasonic level probe, GSM communications.
- http://www.fiedler.iol.cz

Omntec Manufacturing. Inc.
- Automatic tank gauging, leak and level systems and sensors for above- and below-ground storage tanks.
- http://www.omntec.com

Nivelco Process Control Co., Inc.
- Manufacturer of a wide range of level control equipment including vibration, conductivity, and float based level switches, capacitance and hydrostatic level transmitters.
- http://www.nivelco.hu/

Milltronics Process Instruments Inc.
- Manufacture ultrasonic level measurement devices used to measure and control the movement and storage of liquids and bulk solids. The company also produce dry solids flow measurement and flow monitoring equipment.
- http://www.milltronics.com/

Hawker Electronics
- Manufactures products for level control and indication in liquids and free-flowing powders.
- http://hawker-electronics.co.uk

GWK Electronics Ltd.
- Manufacture remote liquid level measurement, alarm and control, and local tank contents gauges.
- http://www.gwkelectronics.com/

Automated Sonix Corporation
- Ultrasonic, non-contact level sensors and ultrasonic flowmeters to monitor and display liquid levels in tanks and flow in pipes without calibration.
- http://www.automatedsonix.com/

K-TEK Corporation
- Manufacturers equipment for level detection for liquids and solids. Level indicators, transmitters, switches.
- http://www.ktekcorp.com/

Babbitt International
- Level controls for liquids, bulk solids, dust emissions, dry material flow, filter leaks. Includes level switches, gauges, transmitters, RF switches and liquid-level indicators.
- http://www.babbittlevel.com/

Towa
- Level controls for solids and liquids.
- http://www.towa-seiden.co.jp/