SDI Diagnostics Astra BT Wireless Spirometer
SDI Diagnostics

SDI Diagnostics Astra BT Wireless Spirometer

SDI Diagnostics | SKU
In Stock
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The Astra BT Wireless Spirometer

The latest innovation from SDI Diagnostics!

Astra BT™ Spirometer is the solution for those searching for a fully-integrated AND wireless spirometer.  Complete package includes our AstraPro software.


Astra BT™ Features

Simplicity With Comprehensive Spirometry.

·                       Powered by two AAA batteries

·                       Ergonomic handle includes:

·                                     Visual connectivity indicator

·                                     Integrated temperature sensor

·                                     Lanyard

·                       Power save mode

·                       Transmit and share data and results with your EMR system

·                       Meets ATS standards

·                       NIOSH (National Institute for Occupational Safety and Health) Compliant

·                       Simultaneous F/V and V/T graphs


AccuFlo™ Digital Turbine

The AccuFlo™ bidirectional turbine with optoelectronic rotary sensor is easily detached for cleaning. Sapphire bearings ensure optimal performance for the life of the turbine. AccuFlo has a unique flow trigger algorithm that allows tidal breathing prior to the patient expiratory effort making the spirometry test easier for the patient and insuring quality test results.


AstraPro™ Software 


Choose either Pre- and Post-bronchodilator and bronchial challenge testing or use the incentive program with your pediatric patients or adults. The Astra BT communicates with AstraPro wirelessly via Bluetooth.


Astra BT™ Spirometer



Forced Parameters Measured



Forced vital capacity:



FEF25-75%, FEV6, FEV1/ FEV0.5, PEFT, Vext, FIVC, FIF50%, FEF50/FIF50,


QC Grades, FEV3, FEV0.5, FEV0.5/FVC, FEV3/FVC, FEV1/VC, FEV1/FEV6,


FEV1/PEF, FEV1/FIV1, PEF/PIF, FEV25%, FEF25%, FEF75%, FEF75-85%,


FET25-75%, FET100, FIV1, FIV1/FVC, PIF, MTT, MVV Ind, Lung age




MVV, Br./min




FVC, FEV1, PEF, FEF25-75%, PDX



Relaxed Parameters Measured



VC, TV, ERV, IRV, IC, Ti, Te, Tt, Ti/Tt

Maneuvers per patient:

8 Total; Best test and last test highlighted


Selectable – Kory, Miller, ATS, NLHEP (Ferguson)

Predicted sets:

Selectable – 20 Total

Ethnic correction:

Selectable – % Actual, Caucasian, Hispanic, African-American


Selectable – English, Spanish or French



Measurement Scale (BTPS)


Flow range

0–16 L/sec


0–10 L

Measurement method:

Infrared Interruption via Digital Turbine

 Dynamic flow resistance:

<1.5 cm H20/L/sec @ 14 L/sec



Measurement Precision (BTPS)


At highest volume:

+/- 3% or 50 ml

At highest flow:

+/- 5% or 150 ml

Time related precision:


Volume resolution:

<6 ml

Sampling frequency:

100 Hz




Calibration syringe


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