QRS Orbit Portable Spirometer

QRS Orbit Portable Spirometer

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The Orbit portable spirometer features improved accuracy, portability and USB 2.0 connectivity. This next generation QRS Spirometer easily connects with your PC and rests on the table top.

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QRS Orbit Portable Spirometer



The Orbit is a full-function portable spirometer which connects directly to your Personal Computer, laptop or tablet. This spirometer simplifies testing by eliminating calibration and sterilization with disposable nose-clips and pre-calibrated mouthpieces. The Orbit integrates with Office Medic and cooperates with your EMR system.

Measured Parameters – FVC, FEV0.5, FEV1, FEV6, FEV3, FEV1/FEV6, FEV1/FVC, FEV3/FVC, PEFR, PEFT, FEF25%, FEF50%, FEF75%, FEF25-75%, FIVC, FIV0.5, FIV1, FIV3, FIV1/FIVC, FIV3/FIVC, PIFR, FIF50%, FIF25-75%, FIF.2-1.2, FVC/FIVC, Extrapolated Volume, EOTV, FET, MVV, RR, MTV, SVC

Language Options – English, Spanish, French, German, Japanese, Italian, Portuguese



Standards – The Orbit provides effective diagnostic tests and meets the following Standards:

  •  American Thoracic Society (ATS/ERS) 2005 Standard
  •  British Thoracic Society (BTS) Standard
  •  National Institute for Health & Clinical Excellence (NICE) Guidelines

Lung Age Calculation – Lung age is calculated for patients ages 20-84. It is equal to the predicted FEV1 that matches the patient’s actual FEV1. Lung age may differ based on the predicted equation chosen.

Patented, Pre-Calibrated Mouthpiece – With the Orbit spirometer system, everything the patient touches is thrown away. No sterilization or calibration is necessary, saving time for nurses, therapists and physicians.


No Batteries Required – The Orbit draws its power from the PC it is connected to by USB port.



The Orbit comes equipped with everything you need to begin testing.

  • Orbit Portable Spirometer
  • QRS Pre-Calibrated Mouthpieces, 2
  • Pressure Tubes, 2
  • Nose Clips, 5
  • Office Medic Software


Also included with the Orbit portable spirometer is a three-year warranty. 



Weight: 0.5 lb.
Height: 4.3” x 3.7” x 1.7”
Range (BTPS): FLOW: ±14 liters/second
VOLUME: 0.5-8 liters
Accuracy (BTPS): FLOW: ±5% of indication or ±200 ml/sec, whichever is greater for FEF 25-75 and ±10% of indication or ±300 ml/s whichever is greater for PEF
VOLUME: ±3% of indication or ±50 ml, whichever is greater for FVC and FEV1; ±10% of indication or ±15 L/min, whichever is greater for MVV
Precision (BTPS): FLOW: 5% of indication or 150 ml/sec, whichever is greater for PEF
VOLUME: 3% of indication or 50 ml, whichever is greater for FVC and FEV1
Calibration: ATS 3-speed or standard calibration check
Predicted Normals:

Adult: Crapo, Cherniack, Morris, Knudson 1983, Roberts, NHANES III, ECC/ERS/Quanjer

Pediatric: HSU, Knudson 1983, Polgar, Warwick, NHANES III, Zapletal, Wang, Quanjer

Tests Performed: FVC, Pre/Post Testing, Flow Volume Loop, MVV, SVC
Measuring Time: FVC – 60 seconds
SVC – 60 seconds
MVV – 15 seconds
Power Supply: 5 Vdc ±5% 100 mA from the host PC USB Port
Operating Conditions:

Temperature: 15-40°C

Humidity: 10-90% (non-condensing)

Atmospheric Pressure: 700-1060 hPa

Storage Conditions:

Temperature: -15-50°C

Humidity: 90% max. (non-condensing)

Atmospheric Pressure: 700-1060 hPa


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