The S3391 is a magnetic proximity sensor with a threaded metallic case, hermetically sealed reed contact, and IP 67 protection. It operates with a normally open (NO) output, handling up to 50 VA at 230 V and 0.5 A, with a maximum switching frequency of 230 Hz. The sensor uses a nickel-plated brass case, has an operating temperature range of -25 to +100°C, and is connected via a 2 m cable with 2 × 0.14 mm² conductors. Its operating distance is specified in Table 1 for use with compatible magnetic units, and it complies with RoHS and the EMC directive.
Magnetic sensors are actuated by the presence of a permanent magnet. Their operating principle is based on the use of reed contacts, which consist of two low reluctance ferro-magnetic reeds enclosed in glass bulbs containing inert gas. The reciprocal attraction of both reeds in the presence of a magnetic field, due to magnetic induction, establishes an electrical contact.
| Fargo Controls, Inc. | |
|---|---|
| Product Category | Proximity Sensors |
| Product Number | S3391 |
| Product Name | Magnetic Proximity Sensor |
| Sensor Technology | Magnetic Proximity Sensor |
| Body Shape | Cylindrical; Threaded Barrel |
| Operation Distance | 0.7874 inch (20 mm) |
| Switching Frequency | 0.2300 kHz |
| Operating Temperature | -13 to 212 F (-25 to 100 C) |
