Level Measurement & Control


Vibrating limit level detection

January 2018 Level Measurement & Control

Kobold has introduced its Kobold NSV level monitors to measure low-density (powdery), fine-grained bulk solids, such as plastic granules, cement, and food like flour, sugar and animal feed. The devices work by the vibrating fork principle. The fork, specifically designed for use in bulk solids, continuously vibrates, and when it is covered by a medium, the vibration behaviour changes. When the device detects this change, it is displayed on a red LED. An additional relay output is provided for signal transmission.

The NSV limit level detectors are ruggedly, but compactly constructed of stainless steel and are insensitive to humidity in materials. Mounting is possible from the top and from the side of a bin, so devices are not only suitable for protection against over-filling, but also signal minimum level accurately. Mountable evaluation electronics are well protected at the top of the device ending in a protection class IP65 plastic terminal box.

Specific versions with elongated neck pipe of up to 3 m make it easy to install vibrating forks in varying heights. The devices have no mechanical moving parts and are thus virtually maintenance-free. The NVS can be used in explosion-proof areas according to ATEX II 1/2 D Ex tD A20/A21.

For more information contact Instrotech, +27 (0)10 595 1831, [email protected], www.instrotech.co.za



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Pressure sensors for hydrogen applications
Instrotech Pressure Measurement & Control
Keller manufactures isolated piezoresistive pressure sensors. The great advantage of the piezoresistive measuring principle is its high stability.

Read more...
Cloud-based inventory management software
Endress+Hauser South Africa Level Measurement & Control
Netilion is an award-winning cloud-based IIoT ecosystem designed for industrial processes. It connects the physical and digital worlds to send valuable information from the field straight to your phone, tablet or other device.

Read more...
Level sensing, conveyor control and grid resistors
DRH Components Editor's Choice Level Measurement & Control
DRH Components is a specialist electric component and systems supplier with a focus on the control of electric motors. As part of its wide variety of products, the company markets the entire Bindicator range. Bindicator manufactures sensors for dry bulk and liquid level measurement.

Read more...
Wind turbines with smart sensors
Instrotech Motion Control & Drives
The wind’s usable kinetic energy increases with the wind speed. Wind turbines, therefore, use kinetic energy to generate torque and then rotational movement. The rotor, consisting of three rotor blades, ...

Read more...
Infrared camera for condition monitoring and early fire detection
Instrotech Temperature Measurement
The Optris PI 640i thermal imager is the smallest measuring VGA infrared camera, with a body-sized volume of 45 x 56 x 90 mm, and weighing only 269 to 340 g, depending on the lens. It counts among the most compact thermal imaging cameras on the market.

Read more...
Pressure monitoring for oil and water tempering machines
Instrotech Pressure Measurement & Control
Temperature plays a significant role in many manufacturing processes. In such cases, a tempering machine is used to maintain the manufacturing process at the desired temperature. Keller supplied PR-21Y piezoresistive pressure transmitters to a client specialising in developing and producing oil and water tempering machines.

Read more...
Level measurement under extreme plant processing conditions
VEGA Controls SA Level Measurement & Control
Level measurement in LNG and LPG processes is about answering the simple question: “How much product is in the tank?” However, obtaining an exact value is not easy. The products are often under pressure, cryogenic, and highly explosive. Sensors from Vega have been operating successfully in all stages of the LNG/LPG process for many years.

Read more...
Temperature monitoring in the metal casting process
Instrotech Temperature Measurement
During metal casting, the liquid material is poured into a mould, and after solidification becomes a solid body. Both too-high and too-low casting temperatures can lead to quality defects. The compact Optris PI 05M infrared thermal imaging camera from Instrotech can monitor the casting process.

Read more...
Grounding of hydrostatic level sensors
WIKA Instruments Level Measurement & Control
Hydrostatic level sensors are very often installed in outdoor applications, primarily in the water and wastewater industries. A good connection to ground is essential when installing hydrostatic level sensors, since no grounding or poor grounding can result in destruction or damage to the level sensor.

Read more...
Interference-resistant pressure transmitters
Instrotech Pressure Measurement & Control
Instrotech offers a pressure transmitter from Keller for temperature compensation and protection from electromagnetic fields (EMC) in the recently approved 21Y Series.

Read more...