Visual Set Point Adjustment, Adjustable Null Zone. Equipped with a single pole, double throw floating contact switch (not snap acting) so it functions as a null switch.
Visual Set Point Adjustment, Adjustable Null Zone. Equipped with a single pole, double throw floating contact switch (not snap acting) so it functions as a null switch.
Features
Service | Air and non-combustible, compatible gases |
Temperature Limits | -30 to 110°F (-34.4 to 43.3°C) |
Pressure Limits | 10 psig (68.95 kPa) continuous, 25 psig (172.4 kPa) surge |
Switch Type | Single-pole double throw (SPDT) floating contact (not snap action) |
Process Connections | ⅛" (0.3175 cm) NPT |
Electrical Rating | Non-inductive: 2.5 A at 110 V AC, 1.5 A at 220 V AC, 1 A at 24 V DC, 0.5 A at 110 V AC Inductive: 1 A at 110 V AC, 0.5 A at 220 V AC, 0.5 A at 24 V DC (De-rate 70 to 80% for very slow pressure changes) |
Connections | Electrical: 3 screw type, common, normally open and normally closed Process: ⅛" female NPT |
Mounting Orientation | Diaphragm in vertical position |
Set Point Adjustment | Screw type |
Agency Approvals | CE |
Weight | 4 lbs (2.18 kg) |
Click on a category to view a selection of compatible accessories with the Dwyer 1640-2 Differential Pressure Switch (1.0-4.0"w.c.) with SPDT switch.
Service | Air and non-combustible, compatible gases |
Temperature Limits | -30 to 110°F (-34.4 to 43.3°C) |
Pressure Limits | 10 psig (68.95 kPa) continuous, 25 psig (172.4 kPa) surge |
Switch Type | Single-pole double throw (SPDT) floating contact (not snap action) |
Process Connections | ⅛" (0.3175 cm) NPT |
Electrical Rating | Non-inductive: 2.5 A at 110 V AC, 1.5 A at 220 V AC, 1 A at 24 V DC, 0.5 A at 110 V AC Inductive: 1 A at 110 V AC, 0.5 A at 220 V AC, 0.5 A at 24 V DC (De-rate 70 to 80% for very slow pressure changes) |
Connections | Electrical: 3 screw type, common, normally open and normally closed Process: ⅛" female NPT |
Mounting Orientation | Diaphragm in vertical position |
Set Point Adjustment | Screw type |
Agency Approvals | CE |
Weight | 4 lbs (2.18 kg) |
Click on a category to view a selection of compatible accessories with the Dwyer 1640-2 Differential Pressure Switch (1.0-4.0"w.c.) with SPDT switch.