Design FeaturesSet points stay set not sensitive to shock, vibration, temperature variations, or other ambient conditionsNo "tracing" of fluctuating pressures no "teasing" of the electrical element. The switch is either "on" or "off."Reduces the adverse effects of pump ripple, contact chatter, fatigue, premature wear, and other common switch problemsMaximum life expectancy with lifelong reliability and precise repeatability assuredA wide range of set points available in each switch model series.646 Series FeaturesExplosion Proof Div. 1, 2U.L./CSANEMA: 4, 7, 9, 13Fire Resistant Steel BodyAmbient Temp. Range: -30 to 160 deg F Specifications Port Connection Type NPT Female Port Size 1/2" Connection Material Stainless Steel Circuitry SPDT Diaphragm/Pistom Material Polyimide Switch Setting Field Adjustable Electrical Connection Male conduit, wire leads Special Options Explosion Proof Min 4 VAC Set Point 26
