Brass Bourdon Tube SPDT Pressure Switch w/ Snap Action Switch & Adj. Deadband (0 - 30" HG VAC)

Brass Bourdon Tube SPDT Pressure Switch w/ Snap Action Switch & Adj. Deadband (0 - 30" HG VAC)

The Mercoid DA/DS Series is one of the world’s broadest lines of pressure switches. The DA/DS Series has extremely high sensitivity and great repeatability. The DA Models are equipped with two external adjustments, one for setting high pressure operating point, the other for setting low pressure operating point. Deadband, the difference between high and low setpoints, is adjustable over the full-scale. The DS Models are equipped with a single external adjustment for setting operating point only. For mercury-free switches, choose between the snap action switch or hermetically sealed snap action switch. Hermetically sealed mercury switch also available.

Applications:

• Compressors
• Mechanical HVAC or process equipment
• Pump control

Features:

• Visible calibrated dial
• On/off indication
• Adjustable, fixed deadband, or manual reset
• External switch setpoint adjustments
• Minimum deadband is obtainable at any point in the range
• Pressure Ranges of full vacuum to 8000 psig.
• UL listed, CSA approved. Many models FM approved.
• General purpose, weatherproof or explosion-proof enclosures
• Single or two stage operation

Specifications:

• Wetted Materials: Brass, 403 SS, or 316 SS.
• Temperature Limit: 180°F (82°C).
• Pressure Limit: Maximum pressure of the operating range.
• Enclosure Rating: General purpose, weatherproof or explosionproof.
• Repeatability: +/-1% of full operating range.
• Switch Type: SPDT
• Electrical Rating: See electrical ratings chart.
• Electrical Connections: Screw terminal.
• Conduit Connection: General purpose: 1/2" hole for conduit hub. Weatherproof: 1/2" conduit hub. Explosion-proof: 3/4" female NPT.
• Process Connection: General purpose and weatherproof: 1/4" male NPT, 1/2" male NPT on ranges 15S and 16S. Explosionproof: 1/2" male NPT and 1/4" female NPT.
• Mounting Orientation: Vertical.
• Set Point Adjustment: Thumbscrew.
• Weight: General Purpose: 4 lb (1.8 kg), weatherproof: 6 lb (2.7kg), explosion-proof: 8 lb (3.5 kg).
• Deadband: See Ranges and Differentials Chart