Dwyer Series SA1100 Diaphragm Operated Pressure Switch

Dwyer Series SA1100 Diaphragm Operated Pressure Switch,
is weatherproof and explosion-proof in one economical enclosure. Extremely rugged construction assures
excellent reliability in chemical, petroleum and industrial plants. New design also
provides burst pressure protection to 3000 psi (206 bar). The rolling diaphragm
design maintains a constant effective area to minimize friction. This results in a
minimum deadband as low as 5% of full-scale. Since many applications require higher
deadbands, the SA1100 includes a separate adjustment of this when necessary. A
pump being used to control liquid level in a tank would be a typical situation where this
feature would be important. Both set point and deadband adjustments are protecte,
yet clearly visible behind a clear polycarbonate window and are fully isolate from
the electrical components for additional safety. A 7/16˝ open-end wrench is the only
tool required to change settings.