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1. Digital vs. Analog Control in Proportional Applications

   ... Most electronic pressure regulators employ an inlet valve to increase pressure to the regulated volume, another valve to exhaust pressure, a sensor to measure pressure, and a controller to decide what ...

2. What You Need to Know About CV

   ... gravity of the fluid, and P is the pressure drop across the valve (psi). Because air is compressible, CV must have additional ... the same flow rate as 1 atm on the inlet of a valve and the exhaust to atmosphere. Flow rates between Nl/min and l/min to atmosphere can be ...

3. Case Study: Liquid Level Sensing

   ... rises, the float moves a rod that touches the pilot actuator valve which sends signal to a cylinder that opens a valve that release liquid ... override and a threaded port for venting or piping away exhaust. With ease of installation, accuracy, durability and cost ...

4. Pressure Control vs. Flow Control

   ... faucet. The controller (hand) turns the handle to open a valve (input action). The valve opens and (hopefully) allows water to flow from ... (EPR) is 2 valves and a sensor. One inlet valve, one exhaust valve and an internal pressure transducer actively measuring downstream ...

5. Practical PID Process Dynamics with Proportional Pressure Controllers

   ... electronic pressure regulators (EPRs) consisting of fill and exhaust valves, an onboard transducer, and PID controls to adjust response ... and a PI controller calculating a setpoint to a process valve (proportional controller) based on temperature readings from the ...

6. Cordis CPC Electronic Pressure Controls FAQ

   ... stability? A: Yes, to a certain level of flow. This is valve and application dependent. Will there be a traceable calibration ... A: Preferred is Loctite 545 or equivalent. Is the exhaust port threaded? A: Yes. CPC-C has #10-32 port. CPC-H has a 1/8" NPT ...

7. Stability vs. Fill-Time in Proportional Control Applications

   ... reason for oscillation in this situation is due to improper valve sizing allowing too much air to pass over the sensor element. In general, ... of air is detected by the sensing element, prompting the exhaust valve to open and discharge excess pressure from the volume, resulting ...

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