The Legris sensor fitting detects the absence of pressure and translates it to a high-pressure pneumatic output. When used to monitor the decaying or exhausting side of a pneumatic cylinder’s piston, it emits a positive output. When the cylinder comes to the end of its stroke, wherever that may be, the signal emitted from the sensor can then be used to pilot the next step.
Legris sensor fittings are very compact and can be mounted on the cylinder, on the control valve or on a terminal block provided it is between the cylinder and the flow control. For accuracy, the flow control regulator should be positioned as close as possible to the cylinder. It can also be fitted to a sensor fitting mounted on the cylinder.
Senses the end of the stroke and reverses the operation of cylinder sensor on each end (blind/red)
Variable end of stroke sensing capability not limited to a fixed return position
Mounting flow control directly on sensor provides an additional benefit of control without adding additional fittings
Pneumatic device does not require adjustment like mechanical devices
Pneumatic or electric version use with air piloted valve and solenoid piloted valve
No limit switch pneumatic or electrical
Models with pneumatic output sensor:
Supplied with permanent pressure. This is suitable for most applications.
Supplied by a branch made on the cylinder and control valve line on the opposite side. As the driving pressure supplies the sensor fitting no untimely signal can appear on start up.
Working temperature: 5°F to +140°F
Working pressure: 45 to 115 PSI
Breaking Pressure: 8.5 PSI
Sutable fluids: compressed air
Response Time: 3ms
Sequence valve signal
The threshold sensor is supplied with constant pilot pressure: this type of connection remains simple and is suitable for the majority of applications. It is therefore possible to produce various locking positions by supplying the threshold sensor with a conditional pilot signal.
The sensor fitting is supplied by a branch made on the cylinder and control valve line on the opposite side. As the driving pressure supplies the sensor fitting no untimely signal can appear on start-up.