D k instruments supplies float-type level switches. In these level switches all controls are made using modular concept. Standard assemblies are incorporated in a wide variety of arrangements to meet virtually any control application and allowing maximum interchangeability of assemblies. The company`s unique engineering and manufacturing capability handles users` special process requirements promptly without long delays at economical costs. The basic operation principle for magnetic switch action results from a change in liquid level, which moves a magnetic attraction sleeve [ss-410 ims] into the field of an externally located u-magnet.