Radar Level Sensors measure Liquids in Tougher ApplicationsFollow article
Why is Radar used?
Non-contact Pulse Radar provides direct measurement from the transmitter to the liquid surface. It has been utilized in extremely challenging applications for level measurement of liquids, sludge, slurries, and solids. Since Pulse Radar is non-contact and has no moving parts, little to no maintenance is required and no calculations or compensation is necessary against the following liquid properties:
- Liquid Density
- Liquid Viscosity
- Dielectric or Conductivity changes
Pulse Radar also provides you with the following application advantages:
- Continuous, non-contact level measurement for liquids, pulps, and slurries
- Process temperature range: -40⁰F (-40⁰C) to 302°F (150°C)
- Process pressure range: -14.5 psi (-1bar) to 580 psi (40bar)
- Accuracy is not affected by environmental conditions including the following
Where is Pulse Radar used?
The level measurement and control industry today offers many different measurement technologies. Each technology has its strengths and weaknesses. It is important to select the right technology for your application. Pulse Radar transmitters are intended for storage, process and lift station applications with extreme environments like foam, vapours, condensation, vacuum, high temperature or vacuum. Pulse Radar is widely used in the following industries:
Bulk Storage Applications Including
- Batching and Dosing
- Power and Energy
- Food and Beverage (including wine and distilleries)
- Marine Transport Cargo Shipping
- Water & Wastewater Treatment
- Gas and Petroleum
- Power and Energy
- Water & Wastewater
- Lift Station
- Waste Collection
The EchoPulse® 26 GHz or 6.3 GHz Pulse radar transmitter is configured via a push-button display on the sensor face. Program the scale of your application with engineering units as well as advanced liquid measurement adjustments like:
- Fast Level Changes
- Turbulent / Agitated Surface Adjustment
- Enable Foam Filter Tuning
- Stand Pipe / Still Well Applications
What is an EchoCurve?
The EchoCurve displays the primary echo return(s) that the sensor is currently seeing graphically, the location and amplitude of the return(s), and the numeric air gap from the sensor’s measurement location to the liquid below. Pressing the ESCAPE button will display the EchoCurve.
Above the echo return peak is a floating arrow to represent the measured liquid level.
Creating a New False EchoCurve
Obstruction in the tank (mixer blades, sidewall weld joints or material build-up, submersible pumps, piping, etc.) or tall tank risers or installation fittings can create false echo returns that impair the sensor’s measurement. The EchoCurve maps all echo returns within the tank, differentiating between good and false echoes, and stores those identified as false into the False Echo Curve, so they will not be considered in the level measurement.
EchoPulse® Pulse Radar Transmitter – General Purpose Applications
Flowline EchoPulse’s with five (5) different product configurations maximizes application bandwidth delivering high performance to value transmitters for repeatable, accurate and reliable level measurement solutions
The EchoPulse® LR10 is a general-purpose 26 GHz radar level transmitter that provides continuous level measurement up to 32.8’ (10m) with a 4-20mA signal output. Its PFA coated horn targets easy application conditions with corrosive media, light agitation, condensation, or vapour and installation in a low-profile tank adapter or flange fitting.
The EchoPulse® LR15is a general-purpose 26 GHz radar level transmitter that provides continuous level measurement up to 98.4’ (30m) with a 4-20mA signal output. It has 3 available horn sizes for challenging application conditions with low or non-corrosive media, light surface foam or agitation, higher temperature or pressure, condensation or vapour and installation in a tank adapter, flange fitting or metal standpipe.
The EchoPulse® LR20is a general-purpose 26 GHz radar level transmitter that provides continuous level measurement up to 65.6’ (20m) with a 4-20mA signal output. It has a PTFE coated flanged horn for challenging application conditions with corrosive media, light surface foam, or agitation, higher temperature or pressure, condensation or vapour and installation in a flange fitting.
The EchoPulse® LR30is a general-purpose 26 GHz radar level transmitter that provides continuous level measurement up to 98.4’ (30m) with a 4-20mA signal output. The IP68 (aka, packaging will endure submersion RE: outdoor environmental applications) Pulse radar transmitter is intended for industrial wastewater, municipal storm or sewer lift station, reservoir, river, canal, flume or weir (OCM) application located below or above grade. The LR30 is designed for challenging application conditions that may include light surface foam or agitation, small trash or plant material, wind, condensation or intense vapor. Each transmitter comes with a 32.8’ (10m) cable, mounting bracket and display module.
For more information on our ‘Level Best’ solutions, visit www.flowline.com