A new line of capacitive proximity switches monitors liquids, pastes, and bulk materials — even through nonmetallic dividing walls. The devices can also be used as limit switches, contact-free position switches, and pulse generators for counting, as well as for monitoring, positioning, and distance and speed measurement. The switches are enclosed in PPO or PTFE synthetic housings and 304-stainless-steel or nickel-plated brass metal housings and potted in epoxy resin. The devices are available as four-wire switches in sizes M12, M18, and M30 (pnp or npn with changeover outputs), two-wire switches (ac/dc, NO) in sizes M18 and M30, embeddable or nonembeddable versions. Connection is by a standard 2-m cable or S12 connector.
2 Business Park Rd., Old Saybrook, CT 06475,