The highest quality of respiratory measurement

Plethysmography is used to measure all the thoracic gas volume (VTG) whether in communication with the airways or not. VTG provides a true assessment of absolute lung volume. All gas dilution methods (i.e. helium dilution or nitrogen washout etc.) rely on the patency of airways to allow mixing with the gas resident in the open areas of the lung. If airways are completely obstructed, mixing cannot occur beyond the obstruction and therefore the measurement may underestimate the true lung volume.

The Body Box 5500 series is a precise, elegant pulmonary function instrument that can ensure the highest quality of respiratory measurement for many years to come!









Designed for comfort and flexibility

Patients can easily exit the cabin should they feel uncomfortable and there is communication for reassurance and testing instruction. The ComPAS Freedom™ software design focuses technician attention on the patient. The tests are carried out quickly with the least inconvenience or patient concern. The cabin interior is quiet, bright and very easy to maintain for cleanliness. With our heritage of working with research centers and teaching hospitals, the Body Box 5500 series offers a wide range of testing capability. The design of both hardware and software provides flexibility in preferences of testing protocols. The craft of the valving makes such versatility possible. The plethysmograph cabin, electronics and patient valve assembly have all been carefully matched to suit tests on subjects ranging from very small children to people of considerable stature. The patient valve can be simply adjusted to ensure comfort and proper testing posture. The shutter valve is both quiet and efficient. It utilizes compressed gas to gain the efficiency and reliability of pneumatic sealing over thousands of operations.

Years of reliable testing

Too many pulmonary function instruments in today’s competitive market are designed with obsolescence in mind. Not so with any of the Morgan Scientific or MediSoft products! It is not unusual for our systems to operate for 15 years and there are countless examples of even greater longevity. Furthermore, the cost of maintaining the magnificently engineered Body Box is far less than other manufacturers. Not only is the cost of service negligible, but the costs of testing supplies are also far less than alternative systems. For DLCO studies, only a single cylinder of diffusion gas is required.

Excellence in single breath diffusion testing comes from years of experience

The Body Box 5510 model provides classic DLCO measurement in a pressure-less breathing circuit thus avoiding errors caused by demand valves. Before each individual test, the circuit is checked for a vacuum and all bag filling and sampling is automated. The low deadspace circuit design and precision gas analysis results in high reproducibility of DLCO results.

Scientific gas conditioning and measurement

A quick-release absorber ensures full fidelity gas analysis by removing the interference of water vapor and carbon dioxide in exhaled samples. This allows for measurement of TLC by nitrogen recovery for subjects unwilling to sit in the closed cabin.

Testing is as easy as 1,2,3…

ComPAS Freedom™ software matches the excellence of the Body Box hardware. For many customers, it is the extension of our program first introduced in 1980. Throughout the evolution of Morgan Scientific software, each new edition, sometimes even crossing operating systems, has provided full conversion of patient data.

ComPAS Freedom™ guides each test maneuver with clear, helpful screens. From the morning’s calibration to complete testing, the software guides, instructs and assists in assurance of high quality testing. Using ComPAS Freedom™ gives any operator a wise, helpful colleague sitting by their side!

The foundation of all testing is ComPAS Freedom™-SQL®, the network-enabled edition of our ground breaking pulmonary analysis software. Backed by the power of Microsoft’s SQL Server®, ComPAS Freedom™-SQL® will propel your laboratory into the information age. With ComPAS Freedom™-SQL® on your network, technicians can test patients at multiple stations within your lab or even throughout the hospital. Test results are immediately available using any computer equipped with the ComPAS Freedom™-SQL® software.

ComPAS Freedom™-SQL®, while powerful out of the box, can be easily customized to suite the unique needs of office locations or small and large hospitals. Need to automatically send test results to your hospital’s mainframe? Need detailed records transmitted to the patient billing department? With the versatility and power of ComPAS Freedom™-SQL® anything is possible.

Body Box Specifications

Standard Testing Capability:

* Routine Spirometry (SVC, ERV, IC etc.)
* Flow Volume Loops (FVC, FEV1, PEFR, FEF25-75 etc.)
* Maximum Voluntary Ventilation (MVV, FEV1 x 35 etc.)
* Volume of Thoracic Gas (VTG, FRC, IC, TLC, RV, RV/TLC etc.)
* Airways Resistance (Raw, sGaw, sRaw, Gaw, VTG, FRC, TLC etc.)
* Bronchial Provocation (PD20, PC20 – any and all parameters)
* Manual Entry (ABG’s, Oximetry and Exercise)

Optional Testing Capability:

* Single Breath Diffusion (DLCO, VA, DL/VA etc.)
* Maximum Inspired and Expired Pressures (MIP/MEP)

General Specifications

* Body Box Dimensions: (H x W x D) 69.3 x 34.25 x 27.95 in / 176 x 87 x 71 cm
* Body Box Weight: 286 lbs (130 kgs)
* Internal Volume: 960 Liters
* Patient Chair: Pneumatic adjustable
* Body Box Door Closing: Simple external & internal lever mechanism
* Power Requirements: 100 to 250 VAC
* Power Consumption: Approx. 100 VA
* Warm-up Time: Approx. 15 min

PC Interface

* Serial Interface: 12 & 14 bit digitization
* Sampling Frequency: 100 and 500 Hz /channel
* Serial Transmission: 115, 200 baud
* Isolation circuit: System fully isolated by optical infrared
* Computer: PC Compatible
* Operating System: Windows® 98.ME, XP, NT or 2000
* Recommended RAM: 512MB
* Recommended Speed: 2 GHz or greater

Pressure Transducers

Box Pressure, Mouth Pressure & Flow: Semiconductors protected from overload
  *Box Pressure: 0.5 cmH2O
  *Mouth Pressure: 50.0 cmH2O
  *Mouth Pres. (MIP/MEP): 150.0 cmH2O
  *Mouth Flow: 5.0 cmH2O
  *Box Pressure: 0.0001 cmH2O
  *Mouth Pres. and Flow: 0.001 cmH2O
  *Linearity: < 0.1%
  *Accuracy: < 0.01%
  *Calibration standards are supplied
  *Box Pressure: 30ml integrated pump
  *Mouth Pressure: Pressure manometer
  *Mouth Flow: 3 Liter Cal Syringe

Patient Manifold

* Pneumotachograph: Lilly Style
* Range: 0.001 to 15 L/sec
* Resistance: 0.4 cmH2O/L/sec
* Accuracy: < 3%
* Linearity: Look-up table
* Calibration: Using a 3L syringe
* Pneumotach Cleaning: Easily disassembles for cold sterilization
* Patient Valve: Pneumatic operation at 50psi
* Deadspace: < 100ml
* Valve Support Arm: Fully adjustable

Standard Gas Analyzers

Helium Analyzer: Thermal conductivity
  * Range: 0 to 15% He
  * Accuracy: +/- 1% (2 – 14% He)
  * Response Time: Fixed to 30 seconds
Oxygen Analyzer: Galvanic Cell
  * Range: 0 to 100% O2
  * Accuracy: +/- 1% (0 – 100% O2)
  * Response: Time Fixed to 30 seconds
Carbon Monoxide: Chemical Fuel Cell
  * Range: 0 to 0.500% CO
  * Accuracy: +/- 2% (0 – 0.3% CO)
  * Response Time: Fixed 30 seconds

Optional Gas Analyzers

Combination CO & Methane Analyzer: Rotating filter high-speed infra-red spectrometer
  * Range: 0 to 0.350%
  * Accuracy: 50ppm
  * Response Time: < 0.1 secs (10 – 90% FS)
O2 Analyzer Paramagnetic
  * Range: 0 to 100% O2
  * Accuracy: +/- 1% (0 – 100% O2)
  * Response Time: 2 secs (10 – 90% O2)

Design & Manufacturing

The Body Box 5500 series instruments are manufactured in this state of the art modern facility with clinical research, precision engineering and computer design departments.

The mouthpiece structure is cleverly designed for simple adjustment and quick disassembly for sterilization. To ensure patient safety and years of trouble-free operation, the shutter mechanism is pneumatic.

Spectacular Reporting CapabilityElectronically, there is no other plethysmograph that can match the quality of transducers and components employed, nor the innovation of the design. The entire electrical assembly can be easily accessed via a hinged panel. If need be, it can be exchanged in less than five minutes by removing the panel from the cabin wall.

The Body Box 5500 series

  • Superbly crafted instrument cabins featuring the finest aluminum extrusion techniques
    Precision engineering of glass doors, seals and patient valving
  • Hand crafted with the pride and skill that is the heritage of Europe’s finest engineering workshops
  • All-round glass panel enclosure provides comfort and reassurance to subjects normally wary of being in a closed space
  • Highly skilled craftsmen using the finest materials manufacture each plethysmograph to impeccable standards.


Body Box calibration is very simple and fast; each step is guided by clear and helpful pictorial screens. During calibration sequences, the instrument is skillfully checked for optimum performance and ATS standards of measurement. Body Boxes are supplied with verifiable testing standards: a 3-Liter calibration syringe (for flow and volume), a fluid pressure manometer (for mouth pressure), a 30ml sinusoidal pump and separate pressurizing pump (for box pressure calibration and cabin seal verification).

Imbedded Help

ComPAS Freedom™ is equipped with a detailed, clear, illustrated “Help” system that is a mine of information. From background on pulmonary physiology, to detailed instructions on report building and system maintenance; ComPAS Freedom™ HTML Help has all the answers! Chapters of the “Help” system can be printed for inclusion in departmental procedure manuals.

Coaching the Patient 

Although the Body Box is simple to operate, some measure of patient coaching is required. Tests of VTG can be done at quiet (normal) breathing, or with shallow panting. At the beginning of each maneuver for either VTG or Raw, a “coaching screen” allows the technician to simulate the mouth shutter closure and the desired panting frequency. An electronic metronome can be engaged during both coaching and testing to assist the patient.

Routine Plethysmography

Testing The design of ComPAS Freedom™ allows for a wide variety of testing protocols. In each case, the tests are controlled by the simple use of a [Spacebar] or the mouse. Since the Body Box 5500 series cabins equilibrate so quickly, testing with the doors closed is fast and accurate. In less than 20 minutes, a full range of plethysmographic studies together with spirometry, flow volume loops and DLCO can be run and verified by repeat efforts.

The most “user-friendly” Bronchial Provocation Testing capability ever!

With many PFT systems, Bronchial challenge testing is a tedious and confusing test. Using ComPAS Freedom™ however, it is made straightforward and quite delightful! Each step is organized and assisted with intelligent prompts and timers. The testing is professionally guided through each of the drug levels making use of ATS effort checking and a clear visual display of the dose response curve. Any form of challenge testing from Methacholine to Cold Air or Exercise protocols can be accommodated.

Spectacular Reporting Capability

ComPAS Freedom™ reports go far beyond the limited designs of alternative software! A comprehensive “Report Designer” is supplied with ComPAS Freedom™ together with a wide selection of standard reports. Typical report options include:

* Single Page Screening Spirometry Reports
* Multi-page Full PFT Reports
* Multi-page Comprehensive Reports – PFT, Body Box and ABG results
* Bronchial Provocation Reports – with dose response curve and interpretation

* Disability Reports – large scale volume-time graphing
* Summary Reports – showing all efforts and variables
* Quality control and Administrative Reports
There is no limit to the layout and design capability available. Reports can be batch printed on busy days. Elegant Networking: ComPAS Freedom™ SQL® can be the ‘framework’ for a complete pulmonary department network. Test results can be sent around the network for Physician review and signature before going on to the hospital main frame. Ask for further details of the ComPAS Freedom™ Departmental Network.

Call for immediate assistance 877-738-3424

Bacterial Filter Kits
5554548-B Filter with Rubber Mouthpiece 50/Box

5554595 Filter, Rubber Mounthpiece, and Noseclip 50/Box

Drierite 1 LB Jar

PFT111600 – Each

Bacterial/Vital Filters

5554100 100/Box

Disposable Nose clips

5550047 – Box of 100

Pneumotach Filter Screen


Reusable Nose Clip

PFT9015 – Each

Complete Absorber Column

PFT71025 – Each

Inspirate Bag (Large)


Expirate Bag (Small)


Green Soda Lime

PFT71594 – Each

1. Why is a Body Box the best alternative for PFT testing?

Because it is the ‘gold standard’ for obtaining clinical lung volume data in patients with obstructive disease. No gas dilution technique (i.e. helium dilution or nitrogen washout) can reach areas of the lung with non-communicating airways. Not only is Plethysmography more accurate, it is a considerable time-saver; in the time it takes to do one helium dilution FRC, many measures by Plethysmography can be achieved.

2. Can the patient open the cabin door from inside?

Yes! For claustrophobic subjects, the cabin is light and comforting and the door can indeed be opened from inside. 

3. Does the Body Box meet ATS and ERS recommendations?

Yes! Not only does this instrument meet and exceed all the new recommendations, the testing screens have been specifically designed around the guidelines and suggested protocols.

4. Does the cabin equilibrate quickly for testing?

Yes! Typically, testing can commence after only one to two minutes of temperature equilibration.

5. Can the Body Box 5500 also do DLCO testing?

Yes! The Body Box can offer either high-speed or traditional methods of DLCO testing.

6. What tests can be billed with the Body Box 5500?

Flow Volume (Pre and Post), Spirometry, MVV, Lung Volumes (VTG), Airways Resistance, Bronchial Challenge and MIP/MEP’s. With the addition of the gas analyzers, DLCO can also be added.

7. Is the Body Box difficult to calibrate?

No! The ComPAS Freedom™ software guides the user through clear simple screens with pictorial instructions and careful review of the results. Automated calibration routines check for leaks and proper instrument performance. All systems are supplied with a sinusoidal box pressure pump, 3-liter calibration syringe and mouth pressure manometer.

8. Can routine Spirometry tests be carried-out sitting outside the cabin?

Yes! The mouthpiece arm assembly will ‘swing’ outside of the cabin for those patients too nervous to enter the cabin.

9. Does the mouthpiece shutter require maintenance to avoid leaks?

No! The mouthpiece shutter is operated by compressed gas (either compressed air or diffusion gas) to ensure years of trouble-free and maintenance-free performance.

10. Can the Body Box accommodate wheelchairs?

Yes! The model 5565 is specially designed to allow for wheelchair access or routine testing. These models have two-doors and are slightly wider than the standard cabin. A ramp with gentle incline facilitates the maneuvering of a wheelchair into the cabin.

11. Does the Body Box speed-up lung volume testing?

Yes! Not only can studies of VTG (Volume of Thoracic Gas) and Airways Resistance be done very quickly, they are far more accurate than gas dilution techniques on subjects with chronic obstruction. In the time it take to do one measure of FRC by helium dilution, up to 6 more accurate measures of FRC could be done by Plethysmography!

12. Is the Body Box suitable for an office practice?

Absolutely! The Body Box equipped with diffusion gas analyzers can be your complete PFT system in one. It is the only system available that can reliably measure lung volumes in obstructive lung disease. The Body Box is designed for long life with minimal service requirement and the footprint is no more than that of a standard desk. Given the low cost of maintenance and expected longevity, it is a highly cost-effective system to own and operate.

13. Is the Body Box inexpensive to operate?

Yes! The Body Box only requires a single cylinder of DLCO gas for all tests. An ‘H’ cylinder of gas will allow for approximately 300 complete PFT studies. The system does not require pre-packaged proprietary chemical filter packs or expensive chromatograph columns. No service contract is needed; a simple replacement of two cells by the user is all that is necessary approximately every 18 months. The Body Box will save you thousands of dollars in service and maintenance cost demanded by other manufacturers!

14. Is the Body Box suitable for children or subjects with small capacities?

Yes! The pneumotachograph is highly sensitive and will easily measure very small volumes and flow rates. The optional single breath diffusion design using high discriminating analyzers is particularly well suited to sick patients or small children.

PFT Diagnostics

P.O. Box 455
Ellsinore, MO 63937

Phone: 877.738.3424