Radar love dominates the level scene

Sounds Hazardous
IRU-2000/3000 ultrasonic sensors are CSA approved for operation in Class I Division 2, Group A, B, C and D hazardous locations. They have a detection range from 1–35 ft., and are not affected by the color, translucency, dielectric constant, specific gravity or viscosity of the target. Temperature compensation automatically adjusts for ambient temperature changes, and a programmable filter accounts for liquid motion or tank irregularities. Scientific Technologies; 888/349-7098; www.stiapg.com

AC/DC Sensor
The QT50U Series universal voltage ultrasonic sensor measures level at distances up to 8 m and accommodates 48–250 VAC or 24–250 VDC, making it suitable for use on equipment where only AC power is present. Models are available for fill level control logic or standard window limit applications. In Retro-sonic mode, it detects any object that passes between the sensor and its setpoint. Banner Engineering; www.bannerengineering.com

Multivariable Transmitter Checks Density
The IMV31 density-compensated level transmitter uses differential pressure, pressure, and temperature measurements to compensate for liquid and vapor density changes. It transmits a 4–20 mA output signal proportional to level with HART digital communications. The sensor is suitable for both open (vented) and closed (pressurized) tanks. Foxboro; 508/549-6321; www.foxboro.com

Free Space Radar
The Micropilot M FMR250 radar level gauge measures plastic pellets, corn, soybeans, cement and fly ash under harsh process conditions, dust, vapors and changing product properties. Maximum measuring range is 230 ft. The two-wire, loop powered level gauge installs easily into existing manholes and process connections reducing start up time and costs. Endress+Hauser; 888/end-ress; www.us.endress.com

Level Switch
The FlexSwitch FLT93 flow/level/temperature switch is ATEX approved for use in potentially explosive environments classified as Ex II 2G Eexd IIC T4. It works as a point level and interface sensor in liquid, gas or foam. Applications include sump level detection, high/low level alarm /control, interface control in separation vessels, foam and sediment interface control, and agitation detection. FCI; 800/863-8703; www.fluidcomponents.com

Level Gauge Goes the Distance
Optiwave 7300 C Radar Level Meter measures distance, level and volume of liquids, pastes and solids at a maximum range of 131 ft. It works in the presence of struts, inlets, ladders, agitated surfaces and foam. The device is available with four different types of screen displays: alphanumeric, alphanumeric with tank illustration, alphanumeric with bar graph and signal screen. Krohne; 978/535-6060; www.krohne.com

Snap-On Level Sensor
The TLS 100 capacitive level sensor detects the presence or absence of liquids at a chosen level within plastic tubes, rubber hoses, and small glass or plastic pipes. The sensor is snapped onto the tube at the level to be monitored. The aluminum mounting clips serve as the sensing electrodes, allowing measurement to occur across a wide area. E-T-A; 847/827-7600; www.e-t-a.com

Capacitive Sensor Replaces Switches
The Leveltrak sensor can replace mechanical float switches. Models are available with two or four switching outputs, so one unit can replace up to four binary switches. The sensor determines level by measuring the point of dielectric contrast that occurs at the level height. A software algorithm scans 16 sensing fields along the length of its probe to determine the point at which the change in dielectric occurs. Ifm Efector; 800/441-8246; www.ifmefector.com

Displacer Wafer Fits Anywhere
Types DL3 and L3 wafer-style displacer level gauges allow direct top mounting onto a vessel, or mounting between flanges of user-supplied fabricated cages. Available in 3 or 4-in. sizes, the wafer body fits Class 150 thru 600 raised-face flange connections. The DL3 produces a 4–20mA analog output signal and is HART compliant. The L3 produces a pneumatic output signal. Emerson/Fisher Controls; www.emersonprocess.com

Capacitive Sensor Suits Semiconductors
Metal is not allowed inside the process area of a typical semiconductor facility, so the QF5.5 capacitive sensor has a cover and an all-plastic (polypropylene) housing that seals the metal potentiometer from the process area. There is no exposed metal on the sensor, making it suitable for semiconductor liquid level applications. Turck; 800/544-7769; www.turck.com

Level Sensor Talks Via Profibus PA
The Sitrans LR 200 radar level transmitter conforms to the Profibus PA Profile version 3, Class B standard. It can be programmed with Siemens Simatic Process Device Manager (PDM) for configuration, parameter setting, record keeping and diagnostics, including trending and echo profiles. The radar transmitter provides level measurement in liquid bulk storage or simple process vessels. Siemens Energy & Automation; 215/ 646-7400; www.sea.siemens.com

Level Monitor Diagnoses Itself
The TN PNM Level System for fly ash hoppers measures level, identifies problems such as wall buildup or equipment failure, and sends an alarm signal. It can monitor up to 64 fly ash hoppers and displays the operating status of each at a single, centralized indicator panel. ThermoElectron; www.thermoelectron.com