SPECIFICATIONS
Wetted Materials:
    Pressure Chamber: Aluminum with PTFE impregnated anodized coating, brass, or 316 SS.
    Diaphragm: 316 SS.
    O-ring: Fluoroelastomer.
Temperature Limit: -40 to 180°F (-40 to 82°C).
Pressure Limits: 750 psig (51 bar).
Enclosure Rating: O enclosure none. PC and SC enclosures meet NEMA 4X standards.
Switch Type: Type 1: SPDT snap switch. Type 1HS: SPDT hermetically sealed snap switch.
Electrical Rating: Switch Type 1: 15 A @ 120/240/480 VAC, 1/8 HP @ 125 VAC, 1/4 HP @ 250 VAC. Switch Type 1HS: 5 A @ 120/240 VAC.
Electrical Connection: Screw terminals on Type 1 switch, terminal block on Type 1HS switch.
Process Connection: 1/8" female NPT and 1/2" male NPT.
Mounting Orientation: Within 20° of vertical.
Setpoint Adjustment: Knurled screw cap with indicating scale.
Weight: A1S: 9 oz (.25 g), A1B: 6 oz (.17 kg).
Deadband: Fixed, see deadband chart below.

Deadband Chart - psig (bar)

Model	Range	Deadband at Minimum Range	Deadband at Maximum Range
A1S with Type 1 Switch	3-20 (.21-1.4)	1 (.07)	3 (.21)
	15-150 (1.0-10.3)	5 (.34)	15 (1.0)
	25-250 (1.7-17.2)	8 (.55)	25 (1.7)
	50-500 (3.4-34.5)	15 (1.0)	50 (3.5)
A1S with Type 1HS Switch	3-20 (.21-1.4)	1.5 (.10)	4 (.28)
	15-150 (1.0-10.3)	10.5 (.72)	40 (2.8)
	25-250 (1.7-17.2)	9 (.62)	50 (3.5)
	50-500 (3.4-34.5)	14.5 (.99)	42 (2.9)