Universal Flow Monitors Inc in Hazel Park, MI, US (United States)

A flow control loop consisting of a flowmeter, controller, and control valve is used to control the flow of a gas to a process. Measurements from a pressure transmitter installed some time ago indicate the incoming air pressure is typically two bar, but that it can vary from one to 2. 

Microprocessor-based differential pressure flow transmitters are generally more accurate and exhibit a larger turndown than analog differential pressure flow transmitters. As a result, fewer models (capsule sizes) are needed to measure the applicable differential pressure ranges. click for more... 

A percentage of measured distance statement describes a parameter that is in error by a constant percentage of the actual distance measurement. For capacitance level measurements, the actual distance measurement is the distance from the bottom of the sensor to the material. 

Hydrostatic level measurement systems are based upon physical properties that are related to the density of the material. These systems are typically applied to liquid or slurry levels, but other levels may be measured in some processes. 

Level measurement systems that have non-mechanical sensors that do not contact the material include laser, non-contact radar, and ultrasonic level measurement technologies.