The Series 501 Adjustable Differential Pressure Switch is designed for pressure, vacuum, and differential pressures. The dual scaled adjustment knob in inches water column and pascals allows changes to the switching pressure to be made without a pressure gage. The 501 is available with settings from 0.08 in w.c. (20 Pa) up to 20 in w.c. (5000 Pa). The silicone diaphragm and PA 6.6 body make the series 501 ideal for use with air and other noncombustible gases. Series 501 models meet UL508 and are constructed of plenum rated plastics. The compact size, adjustment knob and low cost make the 501 the perfect choice for HVAC applications.
Product Applications
· Monitoring air filters and ventilators.
· Monitoring industrial cooling-air circuits.
· Overheating protection for fan heaters.
· Monitoring flows in ventilation ducts.
· Controlling air and fire-protection dampers.
· Frost protection for heat exchanges.
Service:
Air and non-combustible, compatible gases.
Wetted Materials:
501: Diaphragm material: Silicone; Housing material: POM; Switch body: PA 6.6; Cover: Polystyrene;
Temperature Limits:
Process and ambient temperature from -4 to 185°F (-20 to 85°C).
Pressure Limits:
Max. Operating Pressure: 40" w.c. (10 kPa) for all pressure ranges.
Switch Type:
Single-pole double-throw (SPDT).
Electrical Rating:
Max. 1.5 A res./0.4 A ind./250 VAC, 50/60 Hz; Max. switching rate: 6 cycles/min.
Electrical Connections:
Push-on screw terminals. M20x1.5 with cable strain relief or optional 1/2" NPT connection.
Process Connections:
5/16" (7.94 mm) outside diameter tubing, 1/4" (6.0 mm) inside diameter tubing.
Enclosure Rating:
NEMA 3 (IP54).
Mounting Orientation:
Vertically, with pressure connections pointing downwards.
Mechanical Working Life:
Over 106 switching operations.
Weight:
5.6 oz (160 g).
Agency Approvals:
CE, ETL approved to UL508.
Contact: info
Phone:
Tel: (310) 261-1657
Email: info@bestace-inc.com
Add: 21512 South Wilmington Avenue Carson, California 90810, USA.
