Whether dealing with the concentration or the mixing ratio, the density of liquid media is of high importance in processes such as the food or chemical industry. Kobold’s DWF mechanical density meter is designed specifically for the monitoring and continuous measurement of liquid media and 2-phase liquids. Once it is calibrated to the respective medium, the density is measured by means of a float and transmitted to the outside without magnetic contact. Even multi-phase media can be safely managed with this measuring principle.
At 1% of the measuring range, repeatability and linearity of the robust field device are very high. The stainless steel or Hastelloy instrument can stand medium temperatures up to 150°C and pressures up to PN 40. Three different sizes ranging from a maximum of 2500 l/h to a maximum of 10 000 l/h make it possible to adjust the system optimally to the respective task. The nominal widths of the process connections are DN 25 for the smaller device and DN 50 for the two larger devices.
An easy to read mechanical indicator is located directly on the measuring device. The electrical output signal 4... 20 mA is for remote transmission. Additional limit value contacts can also expand the application possibilities as needed with the respective switch outputs and a transducer with communication protocols such as HART, Profibus PA or Foundation Fieldbus. With an IP65 degree of protection, the high quality and robust measurement instrument is very well designed for a harsh process environment. It fulfils industrial norms and standards and is certified for use in explosive areas.
The DWF’s main features include:
• A large spectrum of wetted materials.
• Magneto-resistive signal transmission.
• High temperature application option.
• High pressure application option.
• Excellent heat tracing technology.
The DWF is used for density metering of liquid media in pipes. The scale on the device shows the density rate expressed as grams per litre or kg per mN. Applications include density metering, monitoring and control of liquid media. The DWF is excellent for processes operating under difficult and rough operating conditions. The device is also available with additional electrical equipment for process monitoring and control.
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...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...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...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...Cone penetration testing Instrotech
Pressure Measurement & Control
Everyone has walked along a wet beach at some time and noticed how the damp sand wobbles like jelly when stepped on several times. This may be fun on a beach, but it’s no joke at a construction site or in an earthquake. Houses and streets built on drained swampland or unconsolidated soil or sediment can sink in certain situations, after which they must be condemned for use.
Read more...Infrared measurement technology for scrap recycling Instrotech
Temperature Measurement
Instrotech offers fire protection with infrared cameras and IR measurement technology. One application is a shredding facility in a scrap recycling plant that operates unmanned for an extended period and has known risks for starting a fire.
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...Networked beer tanks Instrotech
Sensors & Transducers
A level measurement with a remote transmitter is highly practical for detecting hazards and other level and fill-level applications. Take pubs, for instance, where an emptying beer tank could be equally dangerous.
printer friendly version