EL-PRESS Digital Electronic Pressure Meter & Controller

Brand: Bronkhorst

The EL-PRESS series electronic Pressure Meters and Controllers have a well-proven compact thru-flow design and are available in pressure ranges from psi: 0 to 5,802 (kPa: 0 to 40,000, bar: 0 to 400), both in absolute and relative (gauge) pressure.

A differential pressure transducer can also be supplied in the ranges of 2 to 100 mbar up to 0.3 to 15 bar. The pressure controller performs with high accuracy and repeatability and should be specified for forward or backward pressure control. 

Todays EL-PRESS series are equipped with a diaphragm type piezoresistive pressure sensor and a digital pc-board as standard and offer high accuracy, stability and reliability.

The basic digital pc-board contains all of the general functions needed for measurement and control. In addition to the standard RS232 output, the instruments also offer Analog I/O. As an option, an integrated inter-face board provides DeviceNet, PROFIBUS DP, Modbus, EtherCAT, PROFINET or FLOW-BUS protocols.

The latter is a fieldbus based RS485, specifically designed by Bronkhorst for their mass flow and pressure metering and control solutions.
Features
  • High accuracy and repeatability
  • High pressure capability up to 400 bar
  • Stable control even at varying process volumes
  • Optional metal sealed and downported constructions
  • Analog I/O signals: 0-5(10) V / 0(4)-20 mA
  • Digital communication: RS232, DeviceNet, PROFIBUS DP, Modbus-RTU/ASCII, EtherCAT, PROFINET or FLOW-BUS

Specifications

Accuracy

  • ± 0.5 % of Full Scale

Applications

  • Autoclave
  • Gas & Liquid Chromatography
  • Protective Gas Pressure Control in Extrusion Moulding Processes
  • Reactors Pressure Control
  • Semiconductor Processing
  • Vapour Pressure Control in MOCVD Processes

Approvals & Certifications

  • ISO 9001, 14001

Communication

  • DeviceNet: Add 48 mA at 24 V
  • EtherCAT: Add 66 mA at 15 V or 41 mA at 24 V
  • FLOW-BUS
  • Modbus ASCII/RTU
  • PROFIBUS DP: Add 53 mA at 15 V or 30 mA at 24 V
  • PROFINET: Add 77 mA at 15 V or 48 mA at 24 V
  • RS-232

Consumption

  • Maximum

Electrical Connectors

  • Analog / RS-232 / PROFIBUS DP Power: 9-Pin D-Connector Male
  • DeviceNet: 5-Pin M12 Male
  • FLOW-BUS/Modbus-RTU/ASCII: RJ45 Modular Jack, EtherCAT/PROFINET: 2* RJ45 Modular Jack (In/Out)
  • PROFIBUS DP Bus: 9-Pin D-Connector Female

Environmental Protection

  • IP40 (Ingress Protection)

Operating Temperature

  • -10° to 70° C (14° to 158° F)

Output

  • 0-10 Vdc
  • 0-20 mA Sourcing
  • 0-5 Vdc
  • 4-20 mA Sourcing

Power Supply

  • 15-24 Vdc

Pressure Range

  • psi: 0 to 5,802 (kPa: 0 to 40,000, bar: 0 to 400) - Electronic Pressure Transducer
  • psi: 0.07 to 1.45 (kPa: 0.05 to 10, bar: 5 to 100) - Electronic Pressure Controller

Repeatability

  • ≤ 0.1 % of Reading

Response Time

  • 2 µs

Seat / Seal Material

  • Seals: EPDM
  • Seals: Kalrez (FFKM)
  • Seals: Viton

Sensitivity

  • 0.1 % of Full Scale/°C
  • Less than psi: 0.08 (kPa: 0.6, Mbar: 6)

Stability

  • Control N₂: ≤ ± 0.05 % of Full Scale

Tube Connection

  • 1/4” O.D. Tube
  • 1/8” O.D. Tube

Wetted Materials

  • 316L Stainless Steel
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