Sensor has separate head

The AP-40 Series Digital Pressure Sensor from Kayence is a high-speed, negative pressure type pressure sensing system designed for semiconductor and other electronic applications. The AP-40’s design, which features a separate amplifier and sensor head, provides a high-speed response and minute pressure sensing capabilities that, the company says, exceed the capabilities of any other available pressure sensing system. Because of its separate sensor head design, the AP-40 reduces ‘tack-time’ and increases throughput.

The AP-40’s pressure sensing element is built into a separate sensor head and therefore it can be mounted at or near the absorption pad directly on the suction device and the amplifier can be mounted in a remote, convenient location. Multiple amplifiers can now be located in a single, conveniently accessible location.

This design feature has made it possible to significantly reduce the size of the sensor head itself. With the AP-40, there is no direct pneumatic connection between the sensor head and the amplifier which significantly reduces the piping length required for the pneumatic connection.

By separating the sensing element from the amplifier and installing it at the absorption pad site, there is no time loss due to the pressure transient propagation in the piping between the amplifier and sensor head (as in conventional systems) before the pressure values can be measured.

With the AP-40, pressure is measured at the remote sensor head, not in the amplifier. AP-40 pressure sensing is virtually instantaneous since the pressure value is transmitted electronically to the amplifier where it is displayed and processed by upper/lower limit and alarm logic.