The Dwyer Series H2 is designed for sequencing two different actions as pressure of a liquid or gas increases or decreases.
Explosion-proof, UL & CSA Listed for Class I, Groups B, C & D and Class II, Groups E, F & G.
The design consists of two concentric pistons operated by a single diaphragm with one pressure chamber. Each piston actuates a separate switch independent of the other.
The switches may be adjusted to operate together, at opposite ends of the range or at two intermediate set points. The threaded top is removed to field adjust or service switches without disturbing electrical or pressure connections.
The Duotect® switch is explosion-proof and weatherproof. It can be mounted in any position and is not affected by vibration.
Features
Explosion-proof and weatherproof housing provides device protection for outdoor use or harsh environment operation
UL listed, CSA approved to support rigorous process applications and regulations
Independent piston action design for either gas or liquid allows switches to active together or independently based on settings
Mounting in any position and not affected by vibration provides reliable switching for equipment