| Product Attribute | Attribute Value |
|---|---|
| Current Rating | 250 mA |
| Frequency, Switching | 1.3 kHz |
| Housing Material | Stainless Steel |
| IP Rating | IP67 |
| Measurement Range | 4 mm |
| Mounting Style | Non-Flush |
| Mounting Type | Non-Flush |
| Operating Voltage Range | 10-36 VDC |
| Output | DPST-NO |
| Primary Type | Inductive Proximity Sensors |
| Protection Class | Protection Class II |
| Sensing Range | 4 mm |
| Shielding | Unshielded |
| Supply Voltage | 10-36 VDC |
| Temperature, Ambient | -13 to 176 F (-25 to 80 C) |
Overview
Quarter-turn valve position sensors
Quarter-turn valves and pneumatic actuators are used for process control in industrial automation. Feedback systems indicate the open and closed position of the valve. ifm’s feedback system is compatible with all actuators using ISO NAMUR VDE 3845 standard mounting. This common standard exactly defines where the threaded holes for mounting the sensor must be located by the actuator manufacturer.
Challenge: Mechanical switchboxes have moving parts that can stick and break.
Solution: ifm’s sensor and target puck provide non-contact valve position feedback.
ifm’s IN sensors use standard inductive technology to provide non-contact detection of metal targets. A typical inductive sensor contains a ferrite core surrounded by a coil of wire to form an inductive circuit. An IN sensor incorporates two ferrite coils. These coils are positioned vertically inside the housing. The rotating puck, which is mounted on the actuator stem, contains two stainless steel targets positioned on the side of the puck, 90° apart, at different heights.
The system operates without contact or wear and is self-cleaning. It is virtually resistant to external influence and insensitive to mechanical stress such as vibration and shock.
As the valve opens, the puck rotates, moving one of the targets in front of one ferrite coil. The coil senses the target and provides a positive signal of valve-open position.
When the valve closes, the puck rotates and moves the second target in from of the second ferrite coil. The coil senses the target and indicates a positive valve-closed position.
Features:
