Main features


Low Running Costs

Reducing running costs in spirometry means reducing the number of disposable items. BTL’s peumotachograph uses reusable sensors and mouthpieces. Instead of printing on expensive thermal paper, it simply saves the report in an electronic form.


Paediatrics Use

BTL spirometer is well prepared for use with paediatric patients. It features modern 3D encouragement animations, paediatric predictions and calculates parameters such as AEX that are useful particularly when assessing children.


Professional Diagnostics

BTL spirometer was designed with respect to ATS/ERS 2005 standard. It performs FVC, SVC and MVV tests, allows choosing desired predictive norm and also provides automatic interpretation from ATS, BTS, Enright and GOLD. Recorded spirometry curves and parameters can always be compared with those from previous examinations.


BTL CardioPoint®

BTL CardioPoint software is a versatile and complete solution integrating ECG, stress test, Holter, ABPM and spirometry into one unified platform. Its number of possible diagnostic, graphic and network configurations make it a software that adapts to the user rather than the user having to adapt to the software.

Technical parameters

BTPS correction automatic
Inspire/Expire yes/yes
Forced spirometry FVC, FEV0.75, FEV1, FEV3, FEV6, PEF, FEV0.75/FVC, FEV1/FVC, FEV3/FVC, FEV6/FVC,
FEF50, FEF25, MMEF, FET25, FET50, MIF75, MIF50, MIF25, PEFT, FIF50, FEF50/FIF50,
FEF50/VC, FEV0.75/FEV6, FEV1/FEV6, FIV1/FIVC, VEXT, Lung age, Aex, FEF25-75, VEXT,
PRE/POST broncho-challenge test yes
Relaxed spirometry SVC, ERV, IRV, TV, IC, IVC
Maximum voluntary ventilation MVV, MVVf, MRf
Predictive values
ECCS 1983, ECCS/ERS 1993, Zapletal 1977, Roca, Barcelona 1986, NHANES III 1999, Knudson 1983,
Knudson 1976, ITS 1984, Crapo 1981, Lam 1982, Pereira 1996, Gore 1995, GLI 2012, Hou Shu 1990, 
Jia Ju-cai 1990, Sun Bin 1990, Liu Shi-Wan 1990, Liu Guo-Hua 1990, Zhu Xi 1990, Wu 1961, Ip 2006,
Polgar 1979, Wang Yang 2013, Perez Padilla 2003, Platino 2006, PDPI 1992, Thai 2000
Interpretation ATS, BTS, Enright, GOLD, ATS+GOLD
Child Incentive yes
Flow range (litres/s) 16 l/s (inspire/expire)
Accuracy (50 ml/s to 16 l/s) ± 5% or 50 ml (whichever is greater)
Volume ranges (litres) 0.025 to 8 litres
Accuracy (0.025 to 8 l) ± 3% or 50 ml (whichever is greater)
Flow resistance < 79 Pa / l/s
Temperature sensor + 10°C to + 40°C
Temperature sensor accuracy ± 2%
Relative humidity sensor 0 to 100% RH
Humidity sensor accuracy ± 4% for 25°C, 30%–80% RH
ADC resolution 15 bits
Sampling frequency 1000 Hz