All-Metal Viscosity Compensating Flowmeter and Switch - VKM


Viscosity causes liquid to stick to floats and metering tubes and can make media appear more dense than it really is. This can lead to large errors in flow measurement values with many types of commonly used flow instrumentation. KOBOLD’s patented viscosity compensation system in the VKM offers a measurement solution that is insensitive to a wide range of viscosity and density changes. This unique technology excels in applications where other standard options have been inconsistent or failed.


The VKM is suitable for a wide range of applications. It is commonly used within hydraulic, lubricating, or cooling systems. Available measuring ranges span from 0.03 to 0.12 GPM through 2 to 20 GPM. Stainless steel models offer a maximum pressure of 5,000 PSIG and brass models offer 3,600 PSIG. Fittings range from ¼” to 1” NPT and options include reed contacts, analog outputs, or compact electronics. The VKM also offers direct reading scales, inline connections, and universal installation for mounting in any orientation.


Not sure if the VKM is the solution for your exact application? We are here to help. Our experts are available by phone during normal business hours and ready to discuss your specific needs.