Summary of Contents for SENSIRION SEK-SVM4x
- Page 1 Version 1.0 SEK-SVM4x – Quick Start Guide Stäfa, October 2021 © Copyright Sensirion AG, Switzerland Confidential...
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Page 2: Table Of Contents
6. Changing the temperature offset (expert mode) 7. Set the tuning parameters for the VOC Index (expert mode) 8. Using the memory feature for the VOC Index (expert mode) 9. Restarting the SVM41 with the new parameters (expert mode) © Copyright Sensirion AG, Switzerland Confidential... -
Page 3: Connecting Your Svm41 To A Computer
Connecting your SVM41 to a computer USB port computer USB-UART cable Windows/Mac/Linux (included in SEK-SVM4x) SVM41 SEK-SVM4x landing page (included in SEK-SVM4x) © Copyright Sensirion AG, Switzerland Confidential... - Page 4 Get ControlCenter software… Download the recent version of ControlCenter for Windows, Mac, or Linux and install it. When launching the software, you should see the SVM41 appearing in the list of connected sensors. © Copyright Sensirion AG, Switzerland Confidential...
- Page 5 …and start using it Now you are good to go for starting your first measurement by pressing the Start button. © Copyright Sensirion AG, Switzerland Confidential...
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Page 6: Measuring Rht
Measuring RHT The results of temperature (left panels) and humidity (right panels) are displayed under the tab “RHT”. temperature relative humidity © Copyright Sensirion AG, Switzerland Confidential... - Page 7 Measuring RHT The upper panels show the values including temperature compensation. This is used, e.g., to compensate self- heating effects by the PCB. The temperature offset used for this compensation can be adjusted (see later). © Copyright Sensirion AG, Switzerland Confidential...
- Page 8 Measuring RHT The lower panels show the values without any compensation. © Copyright Sensirion AG, Switzerland Confidential...
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Page 9: Measuring Voc
The results of VOC are displayed under the tab “VOC”. The upper panel shows the processed VOC Index while the lower panel visualizes the VOC raw signal (i.e., resistance of the MOX layer). VOC Index VOC raw signal © Copyright Sensirion AG, Switzerland Confidential... - Page 10 The results of NO are displayed under the tab “NOx”. The upper panel shows the processed NO Index while the lower panel visualizes the NO raw signal (i.e., resistance of the MOX layer). Index raw signal © Copyright Sensirion AG, Switzerland Confidential...
- Page 11 You may notice that upon each restart, the VOC/NO Index output will be 0 for 45 s. This blackout time is normal and required by the sensor and Gas Index Algorithm to deliver first reliable data. © Copyright Sensirion AG, Switzerland Confidential...
- Page 12 • Hold a text marker next to the SVM41 (preferably close to the SGP41 without touching it) → How does it affect the gas signals? • Exhale onto the SVM41 → How does it affect all signals? © Copyright Sensirion AG, Switzerland Confidential...
- Page 13 SVM41 into the glass. This will produce NO → How do the gas signals look like now? Caution: Use only temperature-resistant glass. Do not perform the test next to flammable products. © Copyright Sensirion AG, Switzerland Confidential...
- Page 14 As you are an expert now you, may want to dig a little deeper First, stop the measurement by clicking the Stop button (1). Subsequently, press on the gear wheel next to the SVM41 in the sensor list (2). © Copyright Sensirion AG, Switzerland Confidential...
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Page 15: Changing The Temperature Offset (Expert Mode)
The difference between both sensors is the temperature offset. If you want the temperature offset to be saved permanently on the SVM41 press the Store button at the bottom (2). © Copyright Sensirion AG, Switzerland Confidential... - Page 16 If you want the tuning parameters to be saved permanently on the SVM41 press the Store button at the bottom (3). For more information, please, consult the application note Sensirion’s VOC Index for Indoor Air Applications. © Copyright Sensirion AG, Switzerland Confidential...
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Page 17: Using The Memory Feature For The Voc Index (Expert Mode)
Note: this feature must only be used for short interruptions (≤10 min). For more information, please, consult the application note Sensirion’s VOC Index for Indoor Air Applications. This feature is only available for the VOC Index and not for the NO Index. -
Page 18: Restarting The Svm41 With The New Parameters (Expert Mode)
Restarting the SVM41 with the new parameters Press the Done button (1). The configuration window will close automatically. Subsequently, press the Start button in the main window (2). All set parameters will now be applied for the new measurement. © Copyright Sensirion AG, Switzerland Confidential... - Page 19 © Copyright Sensirion AG, Switzerland Confidential...
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