Performance Comparison of Thirty Two-Stage Demand Regulators,

Abstract

This report presents the results obtained from an evaluation of thirty commercially available two stage air demand regulators. The tests, carried out in the Admiralty Research Establishment Experimental Diving Unit (ARE/EDU) unmanned hyperbaric facility, followed procedures which have been agreed between ARE/EDU and NEDU Naval Experimental Diving Unit in the USA. The results of the ARE(EDU) tests on thirty, two-stage demand regulators showed that only two met the RECOMMENDED LIMITS for breathing resistance and work of breathing for the three ventilation rates at the maximum depth of 50 msw. A majority of the regulators exhibited a rapid degradation of inhalation response at a ventilation rate of 62.5 1/min, beyond their respective maximum depths or as cylinder pressures approached 30 Bar.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1984
Accession Number
ADA156596

Entities

People

  • I. A. Himmens

Organizations

  • Admiralty Research Establishment

Tags

DTIC Thesaurus Topics

  • Air Pressure
  • Air Supplies
  • Barometric Pressure
  • Breathing Apparatus
  • Diving
  • Flow
  • Gas Flow
  • Instrumentation
  • Pressure Transducers
  • Regulators
  • Resistance
  • Respiration
  • Respiratory Physiological Phenomena
  • Strain Gages
  • Test And Evaluation
  • Test Facilities
  • Underwater Breathing Apparatus

Readers

  • Materials Science
  • Systems Analysis and Design

Technology Areas

  • Autonomy