Siemens Differential Pressure Monitor

Differential Pressure Monitor

The Differential Pressure Monitor (DPM) is an integral part of the APOGEE ® Automation System. The monitor measures and displays the differential pressure between a room and its adjoining space. It is used for monitoring in hospital pharmacies and isolation rooms, and also in labs, areas surrounding labs, holding rooms, and other areas where knowledge of the differential pressure is important.

The Differential Pressure Monitor can operate stand-alone or networked to the APOGEE Automation System. When used with the APOGEE Automation System, alarm, differential pressure values, and status point information can be communicated via a Local Area Network (LAN) to a central terminal for display and recording.

Features

• Through-the-wall differential pressure measurement
• Digital display of pressure (inches of water / Pascals)
• LED indicators for normal and alarm status
• Audible horn indicates alarm condition
• Return from power failure without operator intervention
• Optional 2-position keyed switch disables alarms, available in separate models enabling alarms for: > negative pressure (infectious isolation) > positive pressure (protective isolation)
• Control parameters assigned and changed using the Portable Operator's Terminal
• Proven system architecture

Description

The DPM consists of the following:

• A Liquid Crystal Display (LCD) which displays:
  • State of pressure mode key switch (optional)
  • Pressure monitoring mode
  • High pressure alarm
  • Low pressure alarm
  • General failure
  • Status of door switch
  • Anteroom status
  • Differential Pressure (In.w.c. or Pa)
• 2 LED status lights: green indicating normal operation; red indicating alarm condition
• Audible horn with Horn silence button
• Interfaces to:
  • One or two Remote Pressure Transmitters
  • APOGEE LAN communication
  • Portable Operator's Terminal port
  • Auxiliary alarm relay output
  • 4-20 mA output of pressure
  • Door switch contact
• Optional 2-position keyed switch disables alarms for space cleaning and maintenance.
• Separate keyed switch models for: > negative pressure (infectious isolation) > positive pressure (protective isolation)

Monitor Specifications

NOTE: Authorities having jurisdiction over healthcare facilities may not allow monitors with keyed switches. Please check with local codes before ordering.

Remote Pressure Transmitter

The Remote Pressure Transmitter (RPT) measures the differential pressure between a room and its adjoining space. The RPT uses thermal anemometer technology to measure the air pressure differential between two spaces. These values are then transmitted through a proprietary output signal to an input of the DPM, which converts the signal to a differential pressure measurement. The RPT is designed to be mounted in a through-the-wall installation. It is calibrated after installation. This calibration is made easy through the use of a proprietary NIST traceable calibration tool.

RPT Specifications

Product Ordering Information

NOTE: DPM with 3-position Keyed Switch, 547-001, is only offered as a service replacement part. Contact your local Siemens Building Technologies office for assistance.

Related Documents

• Healthcare Isolation Rooms Architectural and Mechanical Design Considerations Technology Report