PAS Analyzer

Photo acoustic gas analyzer

The TRACE-GAS PAS analyzers combine reliability, speed and ease of use in one device. Developed for the calibration-free and direct measurement.

Photo acoustic spectroscopy

Key Features

no interfering signal an extremely accurate results

huge price advantage

low sample volume and small cell size

low amount of drift

Photo acoustic spectroscopy

Fields of Application


immission in ambient air


site selection of measuring stations


detection of nitrogen oxide sources


building of measuring networks

Technical Data

Technical data 
Ambient temperature5 – 35 °C (non condensing)
Inlet pressure800 – 1.200 mbar
Gas flow< 0,5 l/min (1)
CommunicationModbus TCP/IP/WLAN/Radio
Dimensions (L x W x H)19″ 3 HU (543 x 485 x 143 mm) or 39 cm (with battery 47 cm) x 16,5 cm x 39 cm
Supply voltage230 V AC/50 – 60 Hz or Li-Ion battery (10,4 Ah)
User interface (option) 7″ LCD (capacitive touch)
1 can be adjusted if necessary


SpecificationsPAS-NO2PAS-NO2 – Immission
Measurement range (FS) min.0 – 10 ppm0 – 1 ppm
Measurement range (FS) max.0 – 5.000 ppm
Limit of detection (LOD)1 @t10– t90 ≤ 3 s< 10 ppb (2σ)< 0,5 ppb (2σ)
Linearity< 1 % FS
Accuracy± 1 % FS
Zero drift< LOD in 8 h
Span drift< 1 % FS in 8 h
1 depending on filter settings and flow-rate

Need help?

We look forward to help you choose the perfect gas analysis products for your needs. Talk to us about different technologies and our gas analyzers or OEM sensors.


    Osterwalder Straße 12
    D-87496 Hopferbach


    +49 (0) 83 72 - 70 80