ASM PMIR7 series incremental encoder magnetic rings

The Posirot PMIR7 series incremental encoder magnetic rings from ASM are available in three sizes to accommodate different shaft sizes and yield up to 184,320 pulses per revolution in conjunction with the quadrature encoder read head PMIS4. Both units were designed to operate in harsh environments.

This non-contact incremental encoder system consists of a magnetoresistive read head, PMIS4, and a dual-channel magnetic ring, PMIR7. The sensor head is completely enclosed in a metal housing and generates the industry standard A, B, Z output pulses for quadrature detection with reference mark. The PMIR7 magnetic rings come in three sizes that can be press-fitted onto 27, 35 or 50 mm shaft diameters. The side tracking tolerance of this magnetic encoder is ±1 mm.

The shielded metal housing of the compact PMIS4 sensor read head offers a high level of protection against EMI and thermal overload. The enclosure has an IP67 rating to protect against dirty environments, and since this encoder operates magnetically, the read head still functions even when the magnetic scale is operated in dirty industrial environments with contamination such as oil and dust.