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BRONKHORST EL-PRESS Series - User Manual

BRONKHORST EL-PRESS Series
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Doc. no.: 9.17.101 rev. I Date: 23-09-2020
ATTENTION
Please read this document carefully before installing and operating the product.
Not following the guidelines could result in personal injury and/or damage to the equipment.
EL-PRESS™ series
Digital Pressure Meters and Controllers
Instruction Manual

Table of Contents

Questions and Answers

  • F
    fergusongregoryAug 7, 2025
    How to troubleshoot no (fieldbus) communication in BRONKHORST Measuring Instruments?
    • T
      Taylor ChurchAug 7, 2025
      If your BRONKHORST Measuring Instruments have no (fieldbus) communication, several factors could be at play. First, examine the power supply, cable connection, and cable hook-up to ensure they are correctly configured. If the power supply isn't the issue, verify the node address; an invalid address can disrupt communication. You may need to change the node address. If problems continue after these checks, reset the instrument and restart the master. Should the issue persist beyond these steps, it's recommended to contact Bronkhorst for further assistance.
  • C
    Cody BaldwinAug 11, 2025
    What to do if BRONKHORST Measuring Instruments have no output signal?
    • I
      Isaiah TuckerAug 12, 2025
      If your BRONKHORST Measuring Instruments are showing no output signal, begin by checking the power supply, ensuring the cable connection and hook-up are secure. If power isn't the issue, consider whether the inlet pressure or differential pressure is too low; increasing it might resolve the problem. Another potential cause is clogged or blocked components within the piping, filters, or control valve. Try flushing the fluid system with clean, dry air. If the problem continues, contact Bronkhorst.
  • J
    James OneillAug 16, 2025
    Why measured value rises, but never reaches setpoint in BRONKHORST EL-PRESS Measuring Instruments?
    • B
      Brandon StephensAug 16, 2025
      If the measured value of your BRONKHORST Measuring Instruments rises but never reaches the setpoint, consider these potential causes. The piping, filters, or control valve may be clogged or blocked. To resolve this, flush the fluid system with clean, dry air. If the issue persists, contact Bronkhorst. Also, check if the inlet pressure is too low and increase it if necessary. Finally, examine the system for any leaks.
  • P
    pereznicoleAug 20, 2025
    What causes measured value to be lower than setpoint in BRONKHORST EL-PRESS Measuring Instruments?
    • J
      joshuabaldwinAug 20, 2025
      If the measured value or output signal from your BRONKHORST Measuring Instruments is much lower than the setpoint, several factors could be responsible. It might be due to inlet pressure or differential pressure being too low; in this case, increase the inlet pressure. Ensure you're using the instrument under the conditions it was designed for. Additionally, check for blockages in the piping, filters, or control valve, and flush the fluid system with clean, dry air. If the problem persists, contact Bronkhorst.
  • R
    roykaylaAug 25, 2025
    Why is the control behavior unstable in BRONKHORST Measuring Instruments?
    • K
      Katherine AlvarezAug 25, 2025
      Unstable control behavior in BRONKHORST Measuring Instruments can stem from a couple of key issues. First, the measurement might be disturbed by vibrations. If possible, avoid installing the instrument near sources of mechanical vibration. Secondly, an unstable inlet pressure can cause this problem. Try to eliminate pressure fluctuations, perhaps by installing a pressure regulator.
  • J
    jamie99Aug 28, 2025
    What to do if BRONKHORST EL-PRESS Measuring Instruments show continuous maximum measured value?
    • D
      Dustin LeeAug 29, 2025
      If your BRONKHORST Measuring Instruments are showing a continuous maximum measured value or output signal, there are two primary reasons this could be happening. First, the inlet pressure might be too high, so check the inlet pressure. Second, there could be a sensor failure, in which case you should return the equipment to the factory.
  • M
    Mrs. Cynthia BakerSep 2, 2025
    How to stop control valves oscillating in BRONKHORST EL-PRESS (P-800 series)?
    • D
      Daniel MarshSep 2, 2025
      If the control valves oscillate during the operation of your BRONKHORST Measuring Instruments (specifically the P-800 series), it could be due to the Controller Hysteresis being too low. To fix this, increase the Controller Hysteresis value.

BRONKHORST EL-PRESS Series Specifications

General IconGeneral
TypeElectronic Pressure Controller
Accuracy± 0.5% Rd plus ± 0.1% FS
Turndown1:50
Control Stability< 0.1% FS
CommunicationAnalog
Process connections1/4" or 1/8" NPT, BSP, VCR
Material (wetted parts)Stainless Steel 316L

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