Electronic pressure regulators are also known as electronic air pressure regulator or digital pressure regulator. As the name suggests itself, it is a type of pneumatic (air) pressure regulator that is controlled by electronic command signal or by digital IO method. Electronic pressure regulators have many advantages over mechanical regulators. A mechanical regulator will maintain pressure downstream, most effectively with constant flow rates. However, downstream flow and pressure will often fluctuate in most applications. Pumps and compressors deliver pulses, and the pressure will fluctuate with demand. When a mechanical pressure regulator lacks accuracy or can’t respond fast enough, the result is uneven pressure output. This simple device might be good enough when accuracy isn’t as crucial. However, an electronic/digital pressure regulator delivers better accuracy and dynamic output pressure regulation by utilizing a control signal and the feedback signal to create closed-loop pressure control.

Selections of KaoLu’s Electronic Pressure Regulator – please click on photos for further product specification

KaoLu offers a wide pressure range available to our customers, with industry’s most competitive high accuracy, repeatability, steady pressure at high flow, and high resolution. Below shows our standard selections of digital pressure regulator:
1. QKL-B1T/B3 – available in the 0 – 8 bar adjustable range.
2. QKL-B1S / B3H – available from 0 – 30 bar adjustable range. Customizable pressure range is possible with up to 3500 L/min of flow.
3. QKL-B4H – available up to 70 bar

All regulators comes with selections of either analogue or digital command and feedback signal.

Our electronic pressure regulator has the flexibility to achieve a wide range of customers’ requirements, such as pairing with an external pressure transducer distant away from the regulator, pairing with a volume booster if the customer requires high flow rate when filling a big vessel, pairing with a pressure booster when you require high pneumatic pressure, or adjusting the ramping speed when customers requires that the target pressure is reached in a specific time frame. These are some of the endless possible combinations that our customers use our pressure regulator. Please check our videos in youtube channel for some of our electronic air pressure regulator interesting applications:
https://www.youtube.com/channel/UCjQ9bjuSOT_csnVA9if4_EQ 


What Electronic Pressure Regulator Do
Electronic pressure regulators, also known as digital pressure regulators or electronic air pressure regulators maintain a constant output pressure within a pressurized system even if there are fluctuations in the incoming pressure to the regulator. Mechanical pressure regulators are typically only adjustable by hand, limiting their usability in high tech applications. When using an electronic pressure regulator with a digital control system, the precise output pressure is controllable via slight adjustments to the control signal. An internal pressure transducer creates a true closed-loop control device and offers a feedback voltage of the current output pressure. By reading this feedback signal from an electronic regulator, control systems can make real-time adjustments, greatly improving consistent pressure regulation in the most demanding applications.


How Electronic Air Pressure Regulators ( Digital Pressure Regulators ) Work
Electronic pressure regulators are a big improvement over mechanical regulators—they are fairly simple and very effective at allowing better control. They use a fill valve and a vent valve to maintain the outlet pressure at the desired set-point. A small inner pressure sensor monitors the output pressure and the digital controller adjusts the flow output of the internal valves to retain the required set-point (i.e. closed-loop control). That means that when you set the desired pressure, the regulator will maintain this pressure even with changing flow rates through the system. The internal pressure transducer gives immediate feedback to adjust the flow of either the fill or vent valve so the output pressure remains static


When the control signal increases, the internal proportional valve activates, increasing pressure into an internal pilot chamber. When this happens, more of the inlet pressure passes through the proportional fill valve and into the pilot chamber. The pressure in the pilot chamber grows and causes the upper surface of the diaphragm to operate. Because of this, the air supply valve linked to the diaphragm opens, and a portion of the supply pressure becomes output pressure. This output pressure goes back to the control circuit using the pressure sensor. The fill valve will continue to slightly adjust until the output pressure is equivalent to the desired set-point of the control signal.
Please refer to our website for further selection of electronic pressure regulator.
https://www.genndih.com/proportional-pressure-regulator.htm