MADE IN GERMANY

PAS
Photoacoustic gas Sensor
Ammonia NH31000 ppm
smartGAS item number: PA-242105-00000

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Self-controlledor partiallycontrol via a connected PLC
Compact Design
Zero-calibration by external command or automatic
Measured values continuously accessible via UART data stream
Status indicated by LED
Automatic compensation of the water vapor cross-sensitivity
Designed for 24/7 operation

Application examples
Gas analysis
Biogas application
Environmental monitoring
Process control
Emission monitoring

Available equipment
Gas coolerParticle filter
Gas pump
Mounting equipment
Galvanically isolated output

smartGAS Mikrosensorik GmbH I Huenderstr. 1 I 74080 Heilbronn I Germany
T +49 7131 797553-0 I F +49 7131 797553-10 I sales@smartgas.eu I www.smartgas.eu

Available design in support
Mechanical Installation
Data communication
Gas pre-treatment

DS_ PA-242105-00000_1000ppm
Edition 01_03/2022

PAS I Ammonia NH3 I PA-242105-00000
General features
Measurement principle:

Photoacoustic

Measurement range:

0 ... 1000 ppm Full Scale (FS)Gas supply:

by flow (nearly atmospheric pressure)

Flow rate:

0.1 ... 2.0 l / min

Mounting dimensions:

127 mm x 96.5 mm x 200 mm (L x W x H)

Warm-up time:≤ 10 minutes

Measuring response*
Digital resolution:

0.1 ppm

Detection limit (3 σ):≤ 5 ppm

Repeatability:≤ 1% of measured value plus ± 2 ppm

Long term stability (zero):≤ ± 2 ppm over 24 h periodLong term stability (span):≤ 1% of value ± 3 ppm over 24 h period

Electrical parameters
Power Supply

12 Volts DC ± 1%

Power consumption:

10 minute heat up approx.45 Watts / Operation approx. 15 Watts

Communication:

TTL-UART and digital I/O’sCalibration:

Zero-calibration by external command or automatic

Climatic conditions
Operating temperature:+10°C – +40 °C

Storage temperature:+10°C – +40 °C

Air pressure:

800 – 1150 hPa
0 – 95 % relative humidity (not condensing);
Housing has to be purged with dry air or nitrogen.

Ambient humidity:***

Typical values related to 1013 hPa, Ta = 0 °C, flow = 0.7 l / min for dry (not condensing) and clean sample gas.
Stated values exclude calibration gas tolerance.
Adjustable only via smartGAS Calibration-Tool SW.

All rights reserved. Any logos and/or product names are trademarks of smartGAS. The reproduction, transfer, distribution or storage of information contained inthis brochure in any form without the prior written consent of smartGAS is strictly prohibited. All specifications – technical included – are subject to change
without notice. Depending on the application, the target gas and the measurement range the technical data may differ. No liability is accepted for any
consequential losses, injury or damage resulting from the use of this document or from any omissions or errors herein. The data is given for guidance only. It does
not constitute a specification or an offer for sale.
For more information, please visit www.smartgas.eu or contact us at sales@smartgas.eu
Please consult smartGAS sales for parts specified with other temperature and measurement ranges. At first initiation and depending on application and ambientconditions recalibration is recommended. Recurring cycles of recalibration are recommended.

smartGAS Mikrosensorik GmbH I Huenderstr. 1 I 74080 Heilbronn I Germany
T +49 7131 797553-0 I F +49 7131 797553-10 I sales@smartgas.eu I www.smartgas.eu

DS_ PA-242105-00000_1000ppm
Edition 01_03/2022