Kobold has a turbine wheel flowmeter, model DOT, that is perfectly suited to low viscosity applications. Proven turbine wheel technology measures and monitors difficult media such as distilled water, acids, bases, alcohol and additives, as well as several chemical or pharmaceutical compounds.
The unit comprises a helically shaped turbine rotor supported in two tungsten carbide bearings and a rotor of solid ferritic stainless steel in a grade compatible with the metered liquid – all contained within a housing of non-magnetic stainless steel. This housing allows use in applications of up to 250 bar and temperatures of -20 to 120°C.
A pick-off coil with a permanent magnet core is mounted in the housing adjacent to the rotor blade tips so that a magnetic circuit is set up via the rotor blades. Rotation of the rotor varies the resistance of this magnetic circuit and the flux changes induce a small voltage within the coil, the frequency of which is directly proportional to the rotor speed and therefore proportional to the volumetric flow rate.
The effects of increasing viscosity reduce the linear flow range and shifts the k-factor. Furthermore, the effect of viscosity depends on the frequency (rpm of rotors). Therefore the smaller the meter, the higher the effect of viscosity on the linearity curve.
Independent of medium conductivity, the robust DOT features an accuracy of ±0,2% to ±0,5% of full scale and a repeatability of ±0,02% to ±0,05% under steady flow conditions. The standard model DOT is available in 10 different measuring ranges from 0,11 – 1,1 m³/h up to 55 – 550 m³/h for pipe diameters of 15 to 150 mm. Process connection can be G or NPT thread, DIN or ANSI flanges. Higher ranges and diameters can be supplied up to a pipe diameter of 300 mm. The standard meter is available with a pre-amplified square wave pulse output. Alternatively, the meter is supplied fitted with integral instruments.
Radiometric density measurements Mecosa
Flow Measurement & Control
Radiometric density measurements are used wherever conventional measurement techniques fail. Successful applications can be found in a wide variety of industries, especially where harsh process environments and difficult measuring conditions prevail.
Read more...Battery-powered magmeter
Flow Measurement & Control
The RWEM/D battery-powered electromagnetic flow meter from Royce Water Systems is ideal for water and wastewater systems located at remote sites.
Read more...Precise process and maximum savings with VEGABAR VEGA Controls SA
Flow Measurement & Control
Accurate measurementsof differential pressure is crucial for safety, efficiency and optimising operational processes. For over 40 years, VEGA has supplied industry-leading pressure measurement solutions, establishing itself as a trusted expert with a proven track record in sensor technology.
Read more...Innovative solutions for low flow dosing with high precision Mecosa
Flow Measurement & Control
n the food, pharma, and chemical manufacturing industries, precision and efficiency are of utmost importance. Bronkhorst High-Tech has developed a flexible solution that meets today’s requirements for highly accurate dosing, whether continuous, in ratio, or in batches.
Read more...Battery-powered magmeter
Flow Measurement & Control
The RWEM/D battery-powered electromagnetic flow meter from Royce Water Systems is ideal for water and wastewater systems located at remote sites.
Read more...Smart technology for municipal services VEGA Controls SA
Flow Measurement & Control
A new wave of smart technologies has emerged from VEGA Instruments, promising a revolutionary impact on the efficiency and dependability of municipal services.
Read more...Sustainable journey with hydrogen Mecosa
Flow Measurement & Control
Bronkhorst High-Tech, the Dutch leader in flow measurement and control, has been focusing on hydrogen applications in the renewable energy market for some time, and for good reason.
Read more...Custom solutions for pressure measurement Instrotech
Sensors & Transducers
Wherever pressure sensors are needed, a solution can normally be found in the Keller product catalogue. However, there are often great benefits to optimising a product specifically for integration and use in complete existing systems.
Read more...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...Optimise sludge treatment and reduce operational costs Endress+Hauser South Africa
Flow Measurement & Control
The Endress+Hauser inline measuring devices, the Proline Teqwave MW 300 and the Proline Teqwave MW 500, determine the total solids content of wastewater directly through microwave transmission.
printer friendly version