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Series-1640
Dwyer® Differential Pressure Switch, Floating Contact, High/Low Actuation
- Floating null switch supports applications requiring two set point actions such as open and close damper control
- Visible set point indicator simplifies operation and trouble shooting
- Large diaphragm provides low range accuracy providing precise control
Series-1640
From
$
813.25
Product Overview
- Compliance CE
- Electrical Connection Screw Terminal
- Materials, Wetted Consult Factory
- Media Compatibility Air, Argon, Carbon dioxide, Helium, Nitrogen, Non-Corrosive Dry Gases
- Mounting Orientation Vertical Diaphragm
- Operating Temperature, Max 110 °F
- Operating Temperature, Min -30 °F
- Pressure Type Differential
- Process Connection Size 1/8 in
- Process Connection Type NPT Female
- Proof Pressure Up to 10 psi
- Set Point Adjustment Internal Screw
- Switch Note SPDT floating contact (not snap action), Non-inductive — 2.5A @ 110 VAC; 1.5 A @ 220 VAC; 1 A @ 24 VDC; 0.5 A @ 110 VAC; Inductive — 1 A @ 110 VAC; 0.5 A @ 220 VAC; 0.5 A @ 24 VDC (de-rate 70-80% for very slow pressure changes)
- Switch Rating Non-inductive: 2.5A @ 110 Vac, 1.5 A @ 220 Vac, 1 A @ 24 Vdc, 0.5 A @ 110 Vac; Inductive: 1 A @ 110 Vac, 0.5 A @ 220 Vac, 0.5 A @ 24 Vdc
- Switch Type SPDT NO/NC, Selectable
- Weight 2.18 kg
The unique electric switch design in the Series 1640 Floating Contact Null Switch for High and Low Actuation is another Dwyer Instruments, LLC innovation. The
Dwyer® Model 1640 Differential Pressure Switch resembles the high precision large diaphragm Series 1630 switches. However, the Model 1640 is equipped with a single
pole, double throw floating contact switch (not snap acting) so it functions as a null switch.
As the diaphragm moves in response to pressure changes, it moves the floating contact to cause switching action at two preset points with no switching action between
these points. The “high” circuit will be closed when rising pressure differential reaches the preset level. The “low” circuit will be closed when falling pressure differential
reaches the preset level.
CAUTION: FOR USE ONLY WITH AIR OR COMPATIBLE GASES.
Product Applications
- Damper positioning
- Duct air control