Showing posts with label King Gage. Show all posts
Showing posts with label King Gage. Show all posts

Tuesday, November 3, 2015

Capable Single Tank Level Display Solution

Oil Refinery Storage Tanks
Oil Refinery Storage Tanks
Earlier this year, King Gage released their LP1 Tank Level Indicator. The unit provides a number of integrated features that give the user accurate indication of tank liquid level. Mate the LP1 with any level sensing instrument that produces a 4-20 ma output signal and it can calculate tank inventory based upon hydrostatic pressure or direct level measurement. Tank level is displayed directly in engineering units, referencing a capacity profile that correlates the transmitter output to actual tank geometry. All application parameters are preprogrammed at the factory, based upon supplied application data, and stored in nonvolatile memory. Options include an isolated 24 Vdc transmitter power supply, Modbus communications, and more.

This simple, accurate, flexible unit can be easily applied in many industrial process measurement and control settings. Discuss your application possibilities with a product specialist to save time and take advantage of their wide range of application experience.

Wednesday, November 12, 2014

Guided-wave Radar Level Sensing

Time domain reflectometry for guided-wave radar level
 Guided-wave Radar Level Sensing based
upon Time domain reflectometry (TDR)
(image courtesy of Wikipedia)
Guided-wave radar (GWR) uses a probe immersed in the process media to guide high-frequency electromagnetic waves into the media being measured, and then analyzes the reflected energy to determine level.

GWR is based upon the phenomena of time domain reflectometry (TDR). TDR begins with the initiation of a low-energy electromagnetic pulse of energy into a process through a probe. The subsequent measurement of the energy reflected from the surface of the medium being measured is communicated from the probe to the instrument electronics. By analyzing the reflected waveform, a calculation of level can be made. The instrument then correlates the waveform information to a continuous, or switched, output signal.

Guided-wave radar level transmitter
Guided-wave radar
level transmitter
(courtesy of King Gage)
Guided-wave radar isn’t dependent or subject to the process media properties it is sensing, unlike other electronic level sensing technologies, and can be used for both liquids and solids.

GWR is best suited for the following types of applications:

  • Processes undergoing turbulence or changing density or viscosity.
  • Moving, agitated, foaming, vaporous or circulating surfaces.
  • Processes with higher temperatures and pressures.
  • Sticky or gummy processes, such as oil, paint, rubber or tar.
  • Fine particulate processes such as carbon black, salt, or grain.

One significant advantage to guided-wave radar is that build up on the probe has no effect on the accuracy. While this might be counter-intuitive, the GWR technology “ignores” the relatively insignificant amount of probe build up. This is because the signal returned from the electromagnetic pulse corresponding from the actual process media level is always larger than any reflected signal from build up, which makes it easy for the instrument to determine the difference.

For more information on guided-wave radar level controls, contact:

Mountain States Engineering and Controls
1520 Iris Street
Lakewood, CO 80215
303.232.4100 Phone
303.232.4900 Fax