Keystone

The Keystone system is the result of Pulmonary Data Services 20+ years of experience in building and advancing the technology of pulmonary function analyzers. This system is a simple, inexpensive but comprehensive analyzer with advanced software for total automation and control of lung function measurements.

The keystone uses a direct displacement spirometers. Lung volume measurements are determined by the steady state helium method and diffusion analysis is determined by the single-breath method.

Features

• Totally automated test sequencing
• Single pneumatic valve for all procedures
• Simultaneous, direct pen-linked and computerized graphing
• 100% sterilization ability for the breathing circuit and valve
• Menu driven software with on-line help
• Automated leak detection, calibration and linearity verification
• Self-calibrating gas analyzer
• on-screen display of QC data during test procedures
• User definable:
  • Report Formats
  • predicted values
  • screen and report graphics
  • automated test procedures
  • trend analysis
• Multiple graphic overlays
• Exceeds all published standards – ATS, NIOSH, OSHA and Social Security

Specifications

Spirometer type dry rolling seal

Measuring Range 0-10 Liters

Accuracy ± or 50ml over 10 liter range

Resistance < H₂O mm/sec direct pen-linkage strip chart recorder

Helium Analyzer Type Thermal conductivity

Carbon Monolide Analyzer Type Electrochemical cell

Electical Voltage Requirements 120 vac/5 amp

Leakage Current less than 100 micro-amperes A/D Converter

Dimensions 15” x 15” x 24”

Weight 53lbs