Custom-Off-The-Shelf: The New ‘COTS’ Goods

For decades there has been an initiative to source COTS (Commercial-off-the-shelf) goods when possible, and for good reason. COTS goods generally are less expensive, more readily available and easier to dual source.

Inductosyn: End of an Era, New Opportunities or Both?

Recently, obtaining the Inductosyn and components for maintenance has become more difficult. For decades the Inductosyn from Farrand Controls / Ruhle Companies sat near the top of the rotary sensor hierarchy. Providing sub 2 arcsec (0.5 mdeg) accuracies, it combined the robustness of a resolver with the performance of the best optical encoders. Despite its shortcomings, it found plenty of customers, from airborne infrared and radar systems, to telescopes, satellite communication antennae (SATCOM), machine tooling and low-pressure vacuum chambers.

Improved Encoder Accuracy Brings Hidden Benefits

Capacitive rotary encoders such as those from Netzer Precision are known for their low profile, high noise immunity and excellent accuracy. As a result, they are an excellent choice for applications such as camera systems, radar, slip-rings and robotic joints. Often times in these tasks the encoder is used for velocity feedback, ensuring a smooth […]

Intrinsically Safe Absolute Rotary Encoders

In the most hazardous environments, where an explosive atmosphere consisting of flammable gas or vapor is regularly present and a sensor fault cannot be risked, Intrinsically Safe (IS) sensors may be the best sensing option. Generally, these sensors are paired with a barrier which limits the amount of electrical and thermal energy that can enter the Hazardous Area to an amount that is so small that even in the situation of a sensor fault, there is not enough energy to cause an ignition.