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 on a minimum deadband as low as 5% of full scale. Since many applications require higher deadbands, the SA1100 includes a seperate 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 setpoint and deadband adjustments are protected, yet clearly visible behind a clear polycarbonate window and are fully isolated from the electrtical components for additional saftey. A 7/16 open-end wrench is the only tool required to change settings. Terminal blocks are provided for switch wiring connections and both internal and external ground screws are included. Standard housing is weatherproof to NEMA standards 1 through 4X and 13; explosion-proof to NEMA 7, Class I, Groups B, C, & D; NEMA 9, Class II, Groups E, F, & G or CENELEC EExd IIC T6 (T amb. = 75°C) is UL/CSA listed and CENELEC certified to IP56. Optional construction adds drain to meet IP54. Daiphragm elements are available in either Buna-N or fluorocarbon for compatibility in many liquid or gas applications.
APPLICATIONS
Chemical petroleum, food and drug processing industries. Used indoor, outdoor or in explosion-proof area.
PHYSICAL DATA
Temperature Limits: -30 to 180°F (-35 to 82°C)
Maximum Operating Pressure: 1200 PSIG (82.6 bar)
Maximum Pressure Without Bursting: 3000 PSIG (206 bar)
Weather-Proof Rating: NEMA 1 to 4X and 13
Explosion-Proof Ratings: NEMA 7, Class 1, Groups B, C & D; NEMA 9, Class ll, Groups E, F & G
Process Connection: ¼" (K1) or ½" (K2) NPT(F)
Conduit Opening: ¾" NPT(F)
Switch Type: 1 or 2 SPDT snap acting
Wiring Connections: 3 screw terminals
Electrical Ratings: 15 A @ 125/250/480 VAC, 1/8 HP @ 125 VAC, ¼ HP @ 250 VAC, ½ A @ 125 VDC resisitive, ¼ A @ 250 A resistive.
Hermetically sealed contacts: Rated 5 A @ 125/250 VAC 5 A resistive @ 30 VDC.
Hermetically sealed gold contacts: Rated 1 A @ 125 VAC, 1 A resistive @ 30 VDC
Setpoint and Deadband Adjustment:
7/16" hex nuts
Housing Material: Copper free, die cast aluminum
Finish: Textured gray polyurethane
Connection Materials: Aluminum, brass or 316 SS
Wetted Materials: Buna-N fluorocarbon, aluminum, brass or 316 SS
Position: Within 20° of vertical
Weight: 3 ½ lbs. (1.59 kg)
