Dwyer 1626-1 Series 1620 Single and Dual Pressure Switch Range - .15-1.5" w.c.

About Dwyer 1626-1 Series 1620 Single and Dual Pressure Switch Range - .15-1.5" w.c.

Dwyer 1626-1 Series 1620 Single and Dual Pressure Switch Range - .15-1.5" w.c.

Model - 1626-1

Range - .15-1.5" w.c.

Description - Single and dual pressure switch, range .15-1.5" w.c., .10 min. deadband, .20 max. deadband, 0.5 adj. diff. between set points.

The Dwyer 1626-1 Single and Dual Pressure Switch has a range of .15-1.5" w.c., 10 min. deadband, 20 max. deadband, and 0.5 adj. diff. between set points.
Our old faithful switch design is still best where highest precision combined with diaphragm sealed leak proof construction and mounting simplicity are required. Model 1626 and 1627 differential pressure switches are identical in design and construction except that Model 1626 has a single electric switch and Model 1627 has dual electric switches. Model 1627 can therefore provide dual control when required. It can be set to open or close two independent electrical circuits, each preset for its own actuation pressure. Both units have diaphragm sealed motion take outs providing maximum protection against leakage.
CAUTION: FOR USE ONLY WITH AIR OR COMPATIBLE GASES.

Product Applications

• Damper positioning
  
• Duct air control
  

Features

• Up to 3900 readings can be saved
  
• Entire memory can be read out in only 10 seconds
  
• Watertight housing (IP65)
  
• ComSoft 3 Basic Windows-compatible software facilitates graphs and tables, prints data, smoothes measurement curves, targeted value observation using crosshair function as well as logger programming and setting of limit values
  
• Data transfer via serial interface

Specifications

• Service: Air and non-combustible, compatible gases
  
• Wetted Materials: Consult factory
  
• Temperature Limits: -30 to 130°F ( -34.4 to 54.4C)
  
• Pressure Limits: Max. 50 in. w.c. (12.44 kPa) continuous, 2 psig (13.79 kPa) surge
  
• Switch Type: 1626, Single-pole doublethrow (SPDT); 1627, two Single-pole double-throw (SPDT)
  
• Repeatability: ±1%
  
• Electrical Rating: 15 A @ 120-480 VAC, 60 Hz. Resistive, 1/8 HP @ 125 VAC,1/4 HP @ 250 VAC, 60 Hz
  
• Electrical Connections: 3 screw type, common, normally open and normally closed
  
• Process Connections: 1/8" female NPT
  
• Mounting Orientation: Diaphragm in vertical position. Consult factory for other position orientations
  
• Set Point Adjustment: Screw Adjustment
  

Precision Switching for Low Pressure Applications

Engineered for accuracy, the Dwyer 1626-1 is ideal for controlling or monitoring differential pressure in gas installations. Its adjustable setpoint and snap-acting SPDT contact ensure reliable circuit switching, making it an industry standard in HVAC, process control, and safety interlocks.


Durable and Easy to Install

Featuring a rugged ABS/polycarbonate housing and factory calibration, the 1626-1 is built to withstand harsh environments. The NEMA 1 enclosure rating offers protection for indoor installations, while the included mounting hardware enables hassle-free surface mounting.


Versatile Control with Safety in Mind

With a maximum pressure of 28" w.c., and electrical ratings suitable for both AC and DC circuits, this switch integrates seamlessly with a range of control systems. Its internal screw allows precise setpoint adjustments for targeted operational thresholds, enhancing process safety and efficiency.