位置变送器大致可分为三部分：传感器本身、应用广泛的位置变送器和位移编码器。所有这些产品都用于检查和监控自动化运动序列，因此在工业应用过程中必不可少。
位置变送器是较为复杂的可编程式解决方案，它会针对特定的执行器进行优化，而且只能在此执行器上使用。这一点也同样适用于 Festo 位置变送器 SRBS，它用于检测摆动气缸 DRVS 和 DSM 上的轴旋转运动。SRBS 的特征包括：
在我们的产品组合中，还包括用于 Festo 气爪 HGD / HGPP /HGR 和 HGW 的位置变送器 SMH 。此传感器必须连接一个评估单元并遵循磁性霍尔测量原理。根据抓手的位置，在位置变送器中生成一个模拟量电信号。通过 SVE4 信号转换器转换成 2 个数字输出信号（对应 2 个夹钳位置）。
Position transmitters are used very generally to provide analogue feedback on the piston movement in a specific sensing range in applications such as ultrasonic welding, pressing in, screwing, clamping, detecting good/reject parts etc. They are able to detect the magnetic field of the piston magnet within the sensing range and evaluate it with high repeat position accuracy. The information is provided as a standardised 0–10 V, 4–20 mA analogue signal or via IO-Link®. In addition, the devices offer programming options for the preliminary evaluation of the signal information directly in the transmitter.
At Festo you will find four different position transmitters, all of which are based on the magnetic Hall measuring principle, but differ in size and therefore in their sensing range. The SDAS-MHS and SMAT-8M are small position transmitters and therefore the ideal solution for compact cylinders and grippers. The SDAS-MHS also offers the option of programming two switching points directly on the unit. This means it is not necessary to install a second cylinder sensor on small drives. The SDAT-MHS is the universal solution with sensing ranges of up to 160 mm, 0...10 V, 4...20 mA, IO-Link® and a programmable switching output. Our position transmitters deliver accurate results, fit nicely into pneumatic machines and applications and are extremely reliable.
Displacement encoders measure the distance between an object and a selected reference point, but are also used for positioning tasks. Our portfolio contains numerous products for a wide range of requirements.
We offer the displacement measuring system MME-MTS-TLF, which is based on a magnetostrictive measuring principle; it operates without any contact and measures absolute values. It is a conductive plastic potentiometer that enables a high travel speed to be achieved. The MME-MTS-TLF is mainly used in servo-pneumatic positioning technology and for soft stops.
Another displacement encoder is the MLO-POT-LWG – an absolute measuring push rod potentiometer with high resolution. It has plug-in connections and is suitable for strokes of 100 ... 750 mm. This product is characterised by its long service life.
The Festo displacement encoder MLO-POT-TLF offers high travel speeds and a long service life. It is an absolute measuring conductive plastic potentiometer with high resolution and plug-in connections that can be used for a stroke range of 225 ... 2000 mm.