Series
635S
Pressure Transmitter
0.5% Full Span Accuracy, 4-20mA ranges to 5000 psi

Dimensional Enlargement


The Dwyer Series 635S Pressure Transmitter, sensing pressure of compatible gases and liquids, sends a standard 4-20 mA output signal. A single positive pressure can be measured with an accuracy of ±0.5% of full span. The versitile circuit design enables operation in 2,3, or 4 wire current loops.

 

PHYSICAL DATA

GENERAL

     Pressure Connections: 1/8" NPT Female

     Media Compatibility: Gases and Liquids compatible with 316 SS and 316LSS.

     Electrical Connections: Terminal Block.

     Housing: ABS.

     Weight: 4.5 ounces (128 grams).

     Adjustments: Accessible potentiometers.

ELECTRICAL
     Power Supply: 10-35 VDC (2, 3 or 4 wire), 16-26 VAC (4 wire).

     Output Signal: 4-20 mA DC (limited at 38 mA DC).

     Loop resistance: DC; 0-1300 ohms maximum AC; 0-1200 ohms maximum

     Current Consumption: DC; 38 mA maximum AC; 76 mA maximum.

PERFORMANCE AT 70°F (21.1°C)
     Zero Output: 4 mA DC

     Span Output: 20 mA DC.

     Span: 16 mA DC.

     Accuracy: 0.5% of span (includes linearity, hysteresis & repeatablity).

     Warm-Up Time: 10 minutes.

ENVIRONMENTAL
     Operating Temperature: 20 to 120°F (-6.7 to 49°C).

     Thermal Errors: ± 0.02%/°F .

 

STOCKED MODELS

Ranges in psid (bar)

Model
Number
As Stocked Min. Range Max. Range
635S-1 0 to 30 0 to 20 0 to 40
635S-2 0 to 50 0 to 40 0 to 60
635S-3 0 to 100 0 to 60 0 to 120
635S-4 0 to 200 0 to 100 0 to 250
635S-5 0 to 500 0 to 250 0 to 600
635S-6 0 to 1000 0 to 600 0 to 1250
635S-7 0 to 2000 0 to 1250 0 to 2500
635S-8 0 to 4000 0 to 1250 0 to 5000