Dwyer Series DA-21-153-10S Pressure Switch
In stock
SKU
00001445
Product Shipping Subject to Factory Availability Need Specifications? See PDF Section Below.
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 set points, is adjustable over the full scale.
Bourdon Tube Pressure Switch
Pressure Ranges to 8000 psi (551.6 bar)
SPECIFICATIONS
Wetted Materials: Brass, 403 SS, or 316 SS.
Temperature Limit: 180F (82C).
Pressure Limit: Maximum pressure of the operating range.
Enclosure Rating: General purpose, weatherproof or explosion-proof.
Repeatability: 1% of full operating range, 1.5% on DS-7300 models.
Switch Type: SPST mercury switch, SPDT mercury switch, SPDT snap switch, or SPDT hermetically sealed snap switch. Other circuit types available.
Electrical Rating: See chart on ”Ordering” page.
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 range 15S and 16S. Explosion-proof: 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 (2.7 kg). Explosion-proof: 8 lb (3.5 kg).
Deadband: See chart on ”Ordering” page.
Agency Approvals: CE (mercury switch units are not CE approved), UL, CSA, FM.
Pressure Ranges to 8000 psi (551.6 bar)
SPECIFICATIONS
Wetted Materials: Brass, 403 SS, or 316 SS.
Temperature Limit: 180F (82C).
Pressure Limit: Maximum pressure of the operating range.
Enclosure Rating: General purpose, weatherproof or explosion-proof.
Repeatability: 1% of full operating range, 1.5% on DS-7300 models.
Switch Type: SPST mercury switch, SPDT mercury switch, SPDT snap switch, or SPDT hermetically sealed snap switch. Other circuit types available.
Electrical Rating: See chart on ”Ordering” page.
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 range 15S and 16S. Explosion-proof: 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 (2.7 kg). Explosion-proof: 8 lb (3.5 kg).
Deadband: See chart on ”Ordering” page.
Agency Approvals: CE (mercury switch units are not CE approved), UL, CSA, FM.
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