Smc Kabushiki Kaisha

Tomoyuki Okuyama

Haruhiko Okuno

Yutaka Shimomoto

Mitsuhiro Saitoh

Akio Sato

Takashi Takebayashi

Ryosuke Takeuchi

Tadao Nakajima

Ge Pinghou

Koji Ouchi

Pressure detection switch with a terminal box

Each of pressure-detecting switches to be connected to one another has a first connector provided at one side section and a first connector provided at the other side section. Electric wiring is mutually effected for the pressure-detecting switches by attaching/detaching the first connectors. The pressure-detecting switches are mutually fixed by using a fixing mechanism arranged for the side sections to effect the function for mutually attaching/detaching the pressure-detecting switches.

Position-detecting apparatus

Pressure detection switch

In a multi-channel pressure sensor controller, measured pressure signals from a plurality of pressure sensors to each of which a channel number is assigned are subjected to selection at a multiplexer using a selection signal based on the output of an arithmetic and control unit; the measured pressure signal from the selected pressure sensor is converted by an A-D converter into a digital value; under the control of the arithmetic and control unit, a display unit shows an indication of the digital value converted by the A-D converter and the channel number assigned to the pressure sensor outputting the measured pressure signal having the digital value; a threshold stored in advance for the channel number is compared with the digital value obtained by performing Analog-Digital conversion on the measured pressure signal from the pressure sensor associated with the channel number; and an indication based on the output of the comparison is shown at an alarm indicator lamp for a channel number provided on an alarm unit under the control of the arithmetic and control unit.

Multi-channel pressure sensor controller

Pressure detecting sensor

Pressure sensor

Portable pressure gauge

A positioning detector detects whether a workpiece has been positioned on a reference surface even when the pressure of a fluid supplied from a fluid pressure source and applied to the workpiece varies. A fluid is jetted from a nozzle toward a surface of the workpiece, and a back pressure of the fluid developed behind the nozzle is detected. A fluid pressure bridge is composed of the nozzle, a variable restriction, and a pair of fixed restrictions, and is connected to a semiconductor pressure sensor for detecting the difference between the back pressure and the pressure of a fluid vented through the variable restriction. The semiconductor pressure sensor has output terminals connected to a plurality of comparators for comparing the pressure difference detected by the semiconductor pressure sensor with respective different thresholds. Depending on the detected pressure difference, the comparators produce a different combination of output signals to selectively energize a plurality of light-emitting diodes for allowing the user to visually confirm the positioning of the workpiece with respect to the reference surface.

Positioning detector

Growing community of inventors

Toride, Japan

Tomoyuki Okuyama