1-mm accuracy from narrow beam
Micropilot FMR6x 80-GHz, free-space radar level instrument has a 3° beam angle that can measure level at up to 410 feet with ±1 mm accuracy, making it suitable for use in tanks or silos with complex geometries, obstacles, baffles and/or nozzles. Its process connection, as small as 3/4 in., allows installation in tanks with small process connections, in tall nozzles, and through ball valves. Its antenna resists sticky buildup and condensation. Built-in mapping performs false echo suppression, easing commissioning.
Silicon sensors for precision
FCX level transmitters have micro-capacitance silicon sensors for precise measurements of liquid levels, pressure, differential pressure and fluid flow. They achieve 0.2% accuracy as standard, and cover 0.32 kPa (3.2 mbar) to 500 kPa (5 bar) differential pressure range with micro-capacitance silicon sensors. With a full range of hazardous area approvals such as ATEX, TIIS and FM, built-in RFI filter and lightning arrester and five-digit LCD meter, FCX provide exceptional performance for various process applications.
Fuji Electric, Instrumentation & Control Dept.
Switches for problem powders
CL-10 G Series level detectors handle precipitated and fine, lightweight chemical powders with bulk density as low as 1 lb/ft3, which keeps them accurate and consistent in dusty environments and applications that can bridge and “pack-out,” such as food products (12x to silk sugar) and heavier bulk solids in the 10-15 lbs/ft3 range. Specialized units can serve in temperatures exceeding 300 °F. CL-10 G level detectors are factory calibrated, and are approved for Class I, Group D; Class II, Groups E, F & G; and Class III services.
Automation Products Inc., Dynatrol division
Sealed antenna for extreme settings
Rosemount 5408 non-contacting radar level transmitter has an all-PTFE process seal antenna for demanding applications and difficult media. All of Rosemount 5408's wetted parts are made from PTFE to maximize corrosion resistance. Signal quality metric diagnostics provide dirty antenna detection. The antenna is available in 2-, 3-, and 4-in. sizes (2 in. and 3 in. for tri-clamp), and provides increased pressure and temperature ratings.
Repeatability in sticky situations
Model 7014 high-viscosity, liquid level sensor has proprietary conductive technology for monitoring viscous, water-based liquids, and features an electrically sensitive probe surface with no moving parts or floats. Model 7014 also has a wetted area made of non-stick fluorinated ethylene propylene (FEP), and its smooth sensing surface can differentiate between immersion in thick liquids and air at the top of a tank or container to calculate liquid levels. Its sensor can be mounted in an inverted orientation with no impact on accuracy.
Gill Sensors & Controls
Patented magnetic indicator
1100 Series magnetic level gauge has a Vista lenticular lens indicator with an ultra-wide viewing angle that recently received U.S. Patent No. 9638565B2. Vista uses a curved polycarbonate lens with flattened ridges on the inside, so light enters through the front, reflects off the colored flippers, and is redirected in all directions by the patented lens, allowing for a 200° viewing angle that's reported to be the industry's largest, eliminating the need for armored sight-glass devices.
Safety switch is SIL 2, IEC 61508 compliant
IntelliPoint RF certified SIL 2 safety point-level switch achieves overfill protection with advanced RF admittance for applications requiring safety instrumented functions (SIF). SIL IntelliPoint RF has measurement probes for any process application, meets API 2350 Overfill Protection standards, achieves SIL 3 with a redundant switch, and has Auto Verify circuitry that self-tests the system. It also complies with IEC61508-2, and has worldwide hazardous area approvals, including FM, FMc, ATEX and IECEX-pending.
SIL 2 flow, level switch
FlexSwitch FLT93S flow/level/temperature switch is a dual-function, insertion-style device with advanced thermal dispersion sensing technology, and it's SIL 2-rated. FLT93S operates over a wide setpoint range in hydrocarbon liquids from 0.01 to 5.0 fps (0.003 to 1.5 mps); in gas/air from 0.25 to 120 sfps (0.08 to 37 smps); and in water from 0.01 to 0.3 FPS (0.003 to 0.9 MPS). Level/interface accuracy is ±0.25 in. (±6.4 mm), and measurement repeatability is ±0.125 in. (± 3.2 mm).
Fluid Components International
Two trios of 24-, 80-GHz transmitters
Optiwave two-wire, loop-powered, FMCW radar level transmitters have added three 24-GHz (5400/6400/7400 models) and three 80-GHz devices (3500/6500/7500 models). Optiwave's connections start at ¾ in. They have lens, drop and horn antennas. Their measuring range is up to 100 m (328 ft.) from antenna edge with accuracy of ±2 mm (±0.08 in.). Optiwaves can measure products with dielectric constants as low as 1.4.
Radar for aggressive media
Type 8136 is a non-contact radar device for continuous level measurement that comes in two versions: one has an encapsulated horn antenna for level measurement of aggressive liquids in small vessels, while the other has a plastic horn antenna for measurement in open flumes or gauge measuring waters. It also features level measurement up to 20 meters with 4-20 mA/HART–two wires; adjustable via display, key operation or PC with DTM; ATEX approvals; and insensitivity to temperature, pressure, etc.
Burkert Fluid Control Systems
Infrared laser for reflections
OptioLaser S300 liquid laser uses infrared 905 nanometer (nm) technology to detect all types of liquids, regardless of their dielectric properties. Its narrow beam divergence measures through grates and narrow passages, and even next to flat walls. OptioLaser S300 uses an infrared, low-gain GaAs laser diode with light energy of 905 nm; operates without the need of any calibration; is unaffected by background noise and vapor pressure; and handles low dielectric substances and acoustically absorbent materials.
Hawk Measurement Systems
Safe magnetic level
KM26 magnetic level gauges are custom engineered to meet ANSI/ASME B31.1, B31.3 requirements, and offer continuous total and/or interface level indication for a variety of liquids, including corrosive, flammable and toxic materials in industries such as oil and gas, chemical and power generation. Integrating it into the range of reliable level transmitters and point level switches provides one platform that's reported to save money and space, reduce weight, minimize leaks and increase safety.
Ultrasonic, vibrating fork, buoyancy
Flowline level sensors now include: LU10 series ultrasonic level switches, available in two styles and intrinsically safe: LZ12 vibration fork level switch for reliable level detection of dirty liquids; LP15 capacitance level switch for non-metallic tanks; LV10 general-purpose buoyancy level switch for reliable liquid level detection of relatively clean water and chemical solutions; and Switch-Pro remote, general-purpose level controllers offered in three configurations for alarm, pump and valve control.
Smarter, non-contact radar
Pulsar Model R86 is designed to change how users think about non-contact radar transmitters. Its 26-GHz radar signal has a smaller wavelength, resulting in smaller antennas and improved 1-mm resolution. With improved performance, circular polarization, high-temperature/high-pressure antennas, and advanced diagnostics, R86 offers a smarter, more reliable solution for process level applications.
Parabolic antenna for radar
Model W-100 PiloTrek 25-GHz pulse radar level transmitter has a 148-mm (5.8 in.) diameter parabolic antenna with a 6 in., ANSI R.F. flange, or it can use another suitable mounting flange. The compact, parabolic antenna is rated for 1.4 dielectric measurements at 49 ft. and up to 75 ft. for 1.8 dielectric media. Model W-100’s design is suitable for working pressures of 363 PSIG at 248 °F. It also has a 0.04-in. resolution, minimal 15.3-in. transition zone, and tight 6° beam angle for installation in vessels with internal false targets.
Nivelco Process Control Co.
Higher accuracy radar level
Extensive testing has proven an accuracy of ±1 mm can now be specified for the VegaPuls 64, an improvement over the original accuracy specification of ±2 mm. The level instrument is reported to be the first through-air radar for continuous liquid level measurement that operates with a transmission frequency of 80 GHz. Its small antenna—approximately the size of a quarter—allows it to be used in small tanks and compact vessels where radar technology has previously been unsuccessful.
VEGA Americas Inc.
Float principle for reliability
MM level sensor/transmitter delivers constant level indication/monitoring, regardless of conductivity, pressure and temperature. Its simple design, based on the float principle, ensures reliability. Available materials include stainless steel, PVC, PP or PVDF. It comes in models up to 236 in. for pressures up to 435 psi and for temperatures up to 266 °F. The fittings are either ANSI flange or NPT. Options include interface measurement, Pt100 or a temperature switch.
Kobold Instruments Inc.
Optical level sensor in plastic
VP02E is a photoelectric level sensor for liquid level detection, and its Type VP is an optical level sensor with unmodulated, infrared light for detection of liquids. Manufactured by Carlo Gavazzi, it's fitted with a built-in amplifier. VP02E's transmitter and receiver are completely self-contained in a solid plastic housing designed for mounting into a container wall. VP02E is also available in a polysulfone housing that's resistant to most acids and bases.
Newark element 14