Proportion Air Inc. High Precision Proportional Control Valve QPV
High-precision proportional control valve QPV series
Proportion Air Inc. High Precision Proportional Control Valve QPV
The QPV series from Proportion Air employs a unique closed-loop control technology that provides accurate pressure proportional to the command input signal. The feedback signal from the pressure sensor is compared with the command input signal in the electronic circuit, driving two proportional valves to control and supply pressure proportional to the command input signal. This suppresses hunting and step-like pressure rise behavior, enabling smooth pressure control. It also allows for high-precision pressure control even at low flow rates. In the DQPV type, the supply pressure can be monitored directly.
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basic information
The QPV series from Proportion Air employs a unique closed-loop control technology that provides precise pressure proportional to the command input signal. The feedback signal from the pressure sensor is compared with the command input signal in an electronic circuit, driving two proportional valves to control and supply pressure proportional to the command input signal. This suppresses hunting and step-like pressure rise behavior, enabling smooth pressure control. It also allows for high-precision pressure control even at low flow rates. In the DQPV type, the supply pressure can be monitored directly.
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Applications/Examples of results
【Features】 ■ High resolution ±0.005% FS ■ The supply valve operates proportionally for long life ■ Low pressure range from 0 to 1 kPa to high pressure range up to 1 MPa ■ OPV1 type is a single loop ■ QPV2 type can interface with various external sensors, pressure, flow, load, etc. ■ Optional vacuum (negative pressure) control is also available 【Applications】 ■ Pressure supply device for testing and calibrating measuring instruments ■ Tire manufacturing process ■ Welding and painting robots ■ Tension control in automated production lines ■ Pressure supply for various dispensers ■ Gas regulators (FM explosion-proof model) ■ Pressure supply for medical devices
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Company information
Air Water Mechatronics Co., Ltd. ST Division handles excellent measurement/control equipment focused on the most important themes of pressure and flow in the field of measurement and control in the industrial sector. In pressure measurement, as the Japanese distributor for Setra Systems, we have supplied numerous pressure sensors domestically for many years. Setra's pressure sensors are characterized by high precision and sensitivity, and are used in many advanced technologies, including semiconductor manufacturing equipment. Additionally, to accommodate various industrial pressure measurement scenarios, we also handle products from companies such as BD and Honeywell. We manufacture digital pressure gauges that incorporate or externally attach these pressure sensors. Within our company, various pressure standards with traceability to national standards are installed in a strictly air-conditioned calibration inspection room, allowing us to conduct inspections and recalibrations in-house. Regarding flow measurement, we offer unique and high-value-added products for both liquid and gas (mass flow). For liquids, we primarily provide small, cost-effective, and highly accurate turbine flow meters, as well as Coriolis flow meters. We respond to diverse needs with disposable sensors for pharmaceutical and medical manufacturing, as well as certified sensors for food and beverage applications.
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