The S3251 is a NAMUR inductive proximity sensor with a 2 mm operating distance, designed for flush mounting, and features a plastic case. It operates from a 5 to 30 Vdc supply, with an output current below 1 mA when a metal target is present and above 3 mA when absent. The sensor has a maximum operating frequency of 2000 Hz and a repeatability of ≤ 3%. It is rated IP 67 and functions in temperatures from -25 to +70 °C. It conforms to NAMUR standards (DIN 19234) and complies with the EMC directive.
Working Principle
These sensors act as a variable resistor. With the active surface free, they have a low output resistance. In the presence of a metal target the output resistance is high. The resulting variation in the current is used to control a signal amplifier.
Technical Characteristics
Nominal voltage: 8 Vdc (7,7 - 9V) - Load resistance 1K ohms Output current: In the presence of metals < 1 mA Output current: In the absence of metals > 3 mA These sensors can be used in a variable voltage field from 5 to 30 Vdc.
Amplifiers
All the NAMUR sensors can operate in connection with the following amplifiers: ALNC type for 1 sensor; ALTP delayed type for 1 sensor or ALN2 type for 2 sensors. Furthermore, they can be connected to the electronic rotation controls CRTP.
Features:
| Fargo Controls, Inc. | |
|---|---|
| Product Category | Proximity Sensors |
| Product Number | S3251 |
| Product Name | NAMUR Inductive Proximity Sensor |
| Sensor Technology | Inductive Proximity Sensor |
| Body Shape | Rectangular |
| Operation Distance | 0.0787 inch (2 mm) |
| Switching Frequency | 2 kHz |
