Proposal for replacement of Keyence Corporation's "VP-90".

Guide to Linear Encoders
Due to the discontinuation of the Keyence model "VP-90," Makome Laboratory is proposing replacement products.
As a replacement for the Keyence "VP-90," Makome Laboratory recommends the magnetic linear encoder system "SI-140."
The "SI-140" system utilizes magnetism to measure a scale that is evenly magnetized with alternating N and S poles, in a non-contact manner. Because it uses magnetism, it can measure lengths without being affected by non-magnetic materials. The head has a protective structure rated IP67 (compliant with IEC standards).
The output is provided as A and B phase outputs with a resolution of 0.1 mm. By using an incremental measurement device to quadruple the measurement, it can be used at 0.025 mm.
The detection distance between the head and the scale is 4±3 mm (1 to 7 mm), allowing for some variation in distance.
The output circuit is a MOS FET open-drain output, which can be extended up to 5 meters. Additionally, there is a separate line driver output type that can be extended up to 100 meters.
*The MOS FET open-drain is almost equivalent to an NPN transistor output.
Please contact us for evaluation samples.

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Introducing "SIE-140," which can replace "VP-90" with compatible electrical specifications.