Dwyer Series 634ES

Series 634ES Adjustable Range Pressure Transmitter

Dwyer Series 634ES
Series 634ES

0.5% Full Span Accuracy, Ranges to 5000 psi

The Dwyer Series 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.

 

Dwyer Series 634ES Specifications

  • 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°F (-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.

 

Available Models

MODELDESCRIPTION
634ES-0range 10 psi (0.69 bar), min. range 10 psi (0.69 bar), max. range 20 psi (1.38 bar).
634ES-1range 30 psi (2.07 bar), min. range 20 psi (1.38 bar), max. range 40 psi (2.76 bar).
634ES-2range 50 psi (3.45 bar), min. range 40 psi (2.76 bar), max. range 60 psi (4.14 bar).
634ES-3range 100 psi (6.9 bar), min. range 60 psi (4.14 bar), max. range 120 psi (8.3 bar).
634ES-4range 200 psi (13.8 bar), min. range 100 psi (6.9 bar), max. range 250 psi (17.2 bar).
634ES-5range 300 psi (20.7 bar), min. range 250 psi (17.2 bar), max. range 350 psi (24.1 bar).
634ES-6range 500 psi (34.5 bar), min. range 350 psi (24.1 bar), max. range 600 psi (41.4 bar).
634ES-7range 1000 psi (69 bar), min. range 600 psi (41.4 bar), max. range 1250 psi (86 bar).
634ES-8range 2000 psi (138 bar), min. range 1250 psi (86 bar), max. range 2500 psi (172 bar).
634ES-9range 4000 psi (276 bar), min. range 2500 psi (172 bar), max. range 6000 psi (414 bar).