Application Notes: Tank and Silo Measurement€¦ · Application Notes: Tank and Silo Measurement...
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1.877.696.2584 (TOLL FREE) | 303.649.1000 (PHONE) LASERTECH.COM (WEB) | [email protected] (EMAIL) Application Notes: Tank and Silo Measurement The Universal Laser Sensor (ULS) is used to measure tank levels in many industries, including food, agriculture and water treatment. The sensor can be mounted in an opening as small as 4 inches, aimed down at the measured surface. Because this is a repeating non-contact sensor, there is continuous measurement. The long operating range of the sensor means there is no limit on the tank size. The sensor can measure to solids and liquids regardless of opacity, viscosity, temperature or color. The screen view below shows a typical setup in a grain silo application. Because the air in a grain silo is filled with particulates, Last Target measurement mode is used. This allows the sensor to penetrate the ambient air in the silo to measure to the top of the grain pile. Silos or tanks filled with solids or liquids that do not create heavy particulates could alternatively use the Averaging Measurement mode. The screen image below shows 1 reading per second (1.0Hz) as the output measurement frequency. This frequency is derived from the Pulse Rate Frequency (PRF) and Pulses Per Measurement (PPM) set to 100 and 100 respectively. The resulting output frequency is then PRF/PPM or 1Hz. The distance from the tank opening to the top of the grain is 7.60 feet.
Transcript of Application Notes: Tank and Silo Measurement€¦ · Application Notes: Tank and Silo Measurement...
1.877.696.2584 (TOLL FREE) | 303.649.1000 (PHONE) LASERTECH.COM (WEB) | [email protected] (EMAIL)
Application Notes: Tank and Silo Measurement
The Universal Laser Sensor (ULS) is used to measure tank levels in many industries, including food, agriculture and water treatment. The sensor can be mounted in an opening as small as 4 inches, aimed down at the measured surface. Because this is a repeating non-contact sensor, there is continuous measurement. The long operating range of the sensor means there is no limit on the tank size. The sensor can measure to solids and liquids regardless of opacity, viscosity, temperature or color. The screen view below shows a typical setup in a grain silo application. Because the air in a grain silo is filled with particulates, Last Target measurement mode is used. This allows the sensor to penetrate the ambient air in the silo to measure to the top of the grain pile. Silos or tanks filled with solids or liquids that do not create heavy particulates could alternatively use the Averaging Measurement mode. The screen image below shows 1 reading per second (1.0Hz) as the output measurement frequency. This frequency is derived from the Pulse Rate Frequency (PRF) and Pulses Per Measurement (PPM) set to 100 and 100 respectively. The resulting output frequency is then PRF/PPM or 1Hz. The distance from the tank opening to the top of the grain is 7.60 feet.
1.877.696.2584 (TOLL FREE) | 303.649.1000 (PHONE) LASERTECH.COM (WEB) | [email protected] (EMAIL)
Application Notes: Crane Collision Avoidance
In this setup the Universal Laser Sensor (ULS) is measuring twice a second in Averaging mode. The 4 to 20mA is set to output 20mA when the sensor measures 20 meters, and output 4mA when the sensor measures 5 meters.
When the crane enters the 20-meter zone an alarm is continually flashed for both operators. As the cranes move closer to each other the 4 to 20mA current decreases. Both cranes shut down when they are within 5 meters of one another, to avoid a collision.
