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Dwyer Series 634ES

Adjustable Range Pressure Transmitter
0.5% Full Span Accuracy, Ranges to 5000 psi
 

Dwyer Series 634ESSeries 634ES Transmitters sense a single pressure for air, compatible gas or liquid and provide 4-20 mA output signal. Positive pressure can be measured within an accuracy of ±0.5% of span. The Series 634ES uses an isolated piezoresistive pressure sensor to produce a resistance change across a wheatstone bridge. Convenient 2-wire operation simplifies installation. Zero and span adjustments are fully protected inside a rugged die cast aluminum housing with durable gray polyurethane finish. Enclosure is designed to meet NEMA 4X requirements.

PHYSICAL DATA
Service: Compatible, gases & liquids.
Wetted Materials: Types 316, 316L SS.
Accuracy: ±0.5% F.S.
Stability: ±1% F.S./yr.
Temperature Limits: 20 to 120°F (-6.67 to 48.9°C).
Compensated Temperature Limits: 20 to 120° (-6.67 to 48.9°C).
Pressure Limit: 1.5x maximum pressure range.
Thermal Effect: ±0.025% F.S./°F (0.045% F.S./°C).
Power Requirements: 10 to 35 VDC (2 wire).
Output Signal: 4 to 20 mA.
Zero and Span Adjustments: Protected potentiometers located in auxiliary housing.
Loop Resistance: 1250 ohms DC max.
Current Consumption: 38 mA DC max.
Electrical Connections: Terminal block.
Process Connection: 1/4" (6.35 mm) female NPT x 1/2" (12.7 mm) male NPT.
Enclosure Rating: Designed to meet NEMA 4x.
Mounting Orientation: Not position sensitive.
Weight: 1 lb, 10.6 oz (754 g).
Agency Approvals: CE.
 
Popular Models
Model Number Range in psi (bar) Min. Range in psi (bar) Max. Range in psi (bar)
 634ES-0  15 (1.035)  7.5 (0.517)  40 (2.76)
 634ES-1  30 (2.07)  20 (1.38)  40 (2.76)
 634ES-2  50 (3.45)  40 (2.76)  60 (4.14)
 634ES-3  100 (6.9)  60 (4.14)  120 (8.3)
 634ES-4  200 (13.8)  100 (6.9)  250 (17.2)
 634ES-5  300 (20.7)  250 (17.2)  350 (24.1)
 634ES-6  500 (34.5)  350 (24.1)  600 (41.4)
 634ES-7  1000 (69)  600 (41.4)  1250 (86)
 634ES-8  2000 (138)  1250 (86)  2500 (172)
 634ES-9  4000 (276)  2500 (172)  5000 (414)