This document aims to help setting up an evaluation procedure with a Sensor Evaluation Kit (SEK) from Sensirion. All available Sensor Evaluation Kits can be found on the Sensirion website. The document outlines how to get started with the evaluation kit and how to install and use the necessary software.
The software is targeted to application and R&D Engineers who wish to evaluate a Sensirion Sensor within their application.
| Term | Explanation |
|---|---|
| SEK | Sensor Evaluation Kit, all available Sensor Evaluation Kits can be found on the Sensirion website |
| SensorBridge | The hardware component used to connect up to two sensors with the software |
| EDF | proprietary Sensirion file format for logging measurement values. Compatible with csv reading software such as Microsoft Excel |
| ControlCenter | The Sensor Evaluation Software provided by Sensirion |
| DataViewer | The sensor log viewing software provided by Sensirion |
| VOC Index | The proprietary Sensirion index to measure VOC concentration changes over a period of time. More information can be found here |
| NOX Index | The proprietary Sensirion index to measure NOX concentration changes over a period of time. More information can be found here |
| SHT | Sensirion Humidity and Temperature Sensor |
| STS | Sensirion Temperature Sensor |
| SCD | Sensirion CO2 Sensor |
| STC | Sensirion Thermal Conductivity CO2 Sensor |
| SVM | Sensirion Evaluation Kit for SGP Sensors |
| SGP | Sensirion Mox Sensor to measure VOC and NOX |
| SFA | Sensirion Formaldehyde Sensor |
| SPS | Sensirion Particulate Matter (PM2.5) Sensor |
| SEN | Sensirion Environnmental Module with multiple sensors |
| SDP | Sensirion Differential Pressure Sensor |
| SFM | Sensirion Mass Flow Meter |
| SLF | Sensirion Liquid Flow Sensor |
| LD | Sensirion Single-Use Liquid Flow Sensor |
For optimal usage the minimum recommended system requirements are the following:
- Intel i5 processor or above
- 64 bit OS
- 8 GB of RAM
- 128 GB Hard Drive
- Integrated Graphics or above
-
Windows:
- Windows 11
- Windows 10
- Windows 7 (Latest supported ControlCenter version is 1.31.1, newer releases do not support this OS version)
-
Linux:
- Ubuntu 18.04
- Ubuntu 20.048
- Ubuntu 22.04 (First supported ControlCenter version is 1.35.1, older releases do not support this OS version)
-
MacOS:
- macOS 13 (Ventura)
- macOS 12 (Monterey)
- macOS 11 (Big Sur)
- macOS 10.14 (Mohave) (Latest supported ControlCenter version is 1.31.1, newer releases do not support this OS version)
Note
-
For ControlCenter and DataViewer version 1.35.x you need to install following linux packages: apt install libqt6quickwidgets6 libqt6uitools6
-
ARM processors are not supported. The exception is the Apple Mx series of processors which are compatible with ControlCenter. Sensirion does not guarantee that ControlCenter will work with Raspberry Pi devices running Ubuntu Linux OS
The following Sensor Models are supported by the latest Software release:
| Type | Sensor | SensorBridge Required | Version |
|---|---|---|---|
| Temperature / Humidity | |||
| SHTC1 | Yes | ||
| SHTC3 | Yes | ||
| SHTW2 | Yes | ||
| STH2x | Yes | ||
| SHT3x | Yes | ||
| STS3x | Yes | ||
| STS4x | Yes | ||
| SHT85 | Yes | ||
| SHT4x | Yes | ||
| MOX Gas Sensors | |||
| SGP40 | Yes | ||
| SGP41 | Yes | ||
| Formaldehyde | |||
| SFA3x | No | ||
| PM2.5 | |||
| SPS3x | No | ||
| CO2 | |||
| SCD3x | Yes | ||
| SCD4x | Yes | ||
| Differential pressure | |||
| SDP31 | Yes | ||
| SDP8xx | Yes | ||
| Gas flow | |||
| SFM3000 | Yes | ||
| SFM3003 | Yes | ||
| SFM3019 | Yes | ||
| SFM3119 | Yes | ||
| SFM3200 | Yes | ||
| SFM4100 | Yes | ||
| SFM4200 | Yes | ||
| SFM4300 | Yes | ||
| SFM4311 | Yes | ||
| SFM3200AW | Yes | ||
| SFM3300AW | Yes | ||
| SFM3300D | Yes | ||
| SFM3400AW | Yes | ||
| SFM3400D | Yes | ||
| Thermal Conductivity | |||
| STC31 | Yes | ||
| Liquid Flow | |||
| SLF3S | No | ||
| LD20 | No | ||
| Modules | |||
| SVM3x | No | ||
| SEN4x | Yes | ||
| SEN5x | Yes | ||
| SVM4x | No |
Sensirion provides a variety of Sensor Evaluation Kits for all the different sensor families and models produced. The variety and heterogeneity of the sensors makes it difficult to provide an all-in-one hardware evaluation infrastructure.
Currently the Evaluation Kits are split into two categories:
- All-in-one Evaluation Kits with direct USB support
- Evaluation Kits requiring a Sensorbridge to communicate with a desktop computer. More information regarding the SensorBridge can be found in a later section.
The table with the supported sensors above outlines the hardware requirements for the different Sensor Evaluation Kits.
- I2C bus with speed up to 1Mhz
- SPI bus with CS
- 1.2V - 5.5V selectable supply
- Suitable to deliver up to 250mA @5V
- Analogue in pin (0V - 5V)
- PWM in pin
- Weight with packaging and USB cable: ~140g
There are two interfaces that can be used. Each implements the SHDLC protocol.
- USB Virtual Com Port (connector on the right)
This interface offers a fast plug and play option. It is available on every computer and is usually suitable for up to a couple of devices on a normal desktop PC. - RS485 (connector on the left)
This interface offers more flexibility in terms of a bus system. Multiple devices can easily be attached to one bus and powered by just one supply. Furthermore, long distances can be achieved by this differential bus interface. To use this, an RS485 interface is required for the computer.
- RJ45 (Sensor to Eval Kit)
There are two RJ45 connectors each offering the following signals:
- USB Micro (Eval Kit to Computer)
The USB micro connector is used to do the usual SHDLC communication.
- JST (RS485) - (Eval Kit to Computer)
The standard RS485 connector offers a robust connection with a lock mechanism. The connector offers the RS485 interface.
http://media.digikey.com/photos/JST%20Photos/SM04B-GHS-TB(LF)(SN).jpg
To download ControlCenter please visit our website where you can find the latest and previous releases. For customers based in China please use the relevant download links. You can find the link to the website here: ControlCenter (sensirion.com) ControlCenter is available for Windows, MacOS and Linux Operating Systems. For a complete list of version compatibility please visit the compatibility section of this manual.
Please note that installing ControlCenter requires administrator permissions. Please consult with your IT department in case administrator permissions need to be granted.
To install ControlCenter for Windows please follow the Installation Wizard and install the additional libraries when prompted at the end since they are necessary for the proper communication with SensorBridge. After installation, ControlCenter can be launched without administrator rights.
After downloading the dmg files please follow the Installation Wizard and enter the administrator password when prompted by the Wizard. When running the installer, you have to allow executable in the System Preferences -> Security & Privacy -> General tab. Else the installer will not show up.
After installation, ControlCenter can be launched through the applications folder.
The ControlCenter package for Ubuntu comes with a ready to run application. Simply extract the contents of the compressed folder after download and double click on the ControlCenter executable.
Please note that for Ubuntu Linux 22.04 and ControlCenter and DataViewer version 1.35.x you need to install following linux packages: apt install libqt6quickwidgets6 libqt6uitools6
There are currently two ways to start evaluating a Sensirion sensor with ControlCenter:
Which of the two ways depends on the specific evaluation Kit. Please refer to the Required Hardware section of the manual to determine whether or not SensorBridge is required for the evaluation.
To connect an SEK via SensorBridge to your computer follow the next steps:
- Use the adapter cable supplied with your SEK and connect it to the female connector on the evaluation board
- Connect the RJ45 connector of the adapter cable to either of the two RJ45 ports on the SensorBridge
- Use the supplied nano-USB to USB cable to power and connect the SensorBridge to your computer
- Launch ControlCenter
To connect an SEK via USB cable to your computer follow the next steps:
- Use the adapter cable supplied with your SEK and connect it to the female connector on the evaluation board
- Connect the USB connector of the adapter cable to your computer
- Launch ControlCenter
ControlCenter comes with reasonable default configurations for each sensor to start the sensor evaluation. To further customize sensor configuration you can find the sensor settings as a green gear button in the 'Config' column next to each connected sensor in the device list.
In the sections below you find the documentation of all available configurations for the following sensors:
- SHT (Humidity and Temperature)
- SVM4x/SGP4x (VOC and NOx)
- SCD30 (CO2)
- SCD4x (CO2)
- SPS30 (Particulate Matter)
- SFA3x (Formaldehyde)
- SLF3S (Liquid Flow)
- SDP3x/SDP8x (Differential Pressure)
Note
To change the sensor settings or the configuration ControlCenter needs to stop measuring. Please, click the stop button to stop the measurement.
An exception to this, are some of the settings of SCD30 which can be adjusted only when the measurement is running
To evaluate the SHT4x you need to connect an SEK-SHT4x. Upon connecting the SHT4x you can:
- Choose a custom name for the sensor which will also be displayed in the plot
- Choose to log less data points in the range of 'every sample' to 'every 10th sample'
- Select the additional signals for Dew Point and Absolute humidity to be shown. Selecting either of the two signals creates an additional tab with the computed signals in the plot section.
Additionally, there are a number of specific SHT4x settings regarding the heater that the user can select:
- Heater power mode (High/Medium/Low)
- Heater duration and off-time
For more information please refer to the datasheet of SHT4x.
Please Note:
In case you have an SHT3x connected, you have the ability to turn on/off the ART mode on the sensor. With The ART (accelerated response time) feature activated the sensor will start acquiring data with a frequency of 4Hz. The ART feature is reset after a soft or hard reset of the sensor as well as after powering the sensor off. For more information please refer to the datasheet of SHT3x.
To evaluate the SGP4x you need to connect an SEK-SVM4x. Upon connecting the SVM4x you can:
- Choose a custom name for the sensor which will also be displayed in the plot
- Choose to log less data points in the range of 'every sample' to 'every 10th sample'
Below you can find how to change specific functionalities regarding the VOC Index and the NOx Index
You can change the temperature offset by entering a new value under the Device Parameters section and subsequently pressing the Apply button (1).
You can check if such compensation is needed by comparing the temperature raw value of the SVM4x with the temperature measured by an SHT on an FPCB (e.g., from a SEK-SHTxx) when placing both next to each other. The difference between both sensors is the temperature offset.
If you want the temperature offset to be saved permanently on the SVM4x press the Store button at the bottom (2).
There are different parameters which can be set by the user to influence the behavior of the VOC Algorithm. For each parameter, you can place the cursor on top of the i icon to receive more information about it (incl. default values in case you forget).
Enter the values in the fields keeping them within Min and Max ranges (1). Feel free to play with the parameters; you cannot destroy anything. Confirm the settings by pressing the Apply Algorithm Parameters button (2).
If you want the tuning parameters to be saved permanently on the SVM4x press the Store button at the bottom (3).
For more information, please, consult the application note Sensirion's VOC Index for Indoor Air Applications.
After restart, the VOC Algorithm on the SVM4x normally forgets everything which had been previously learned.
By checking the box next to Memory-Feature enabled, the VOC Algorithm remembers previous data and avoids the situation that the algorithm needs to learn from scratch.
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.
There are different parameters which can be set by the user to influence the behavior of the NOx Algorithm. For each parameter, you can place the cursor on top of the i icon to receive more information about it (incl. default values in case you forget).
Enter the values in the fields keeping them within Min and Max ranges (1). Feel free to play with the parameters; you cannot destroy anything. Confirm the settings by pressing the Apply Algorithm Parameters button(2).
If you want the tuning parameters to be saved permanently on the SVM4x press the Store button at the bottom (3).
For more information, please, consult the application note Sensirion's NOx Index for Indoor Air Applications
In case you need to transfer a baseline file for a specific SGP sensor to a different computer, you can find it here: C:\Users\<username>\Local\Sensirion\ControlCenter with the file extension '.json'.
To evaluate the SCD3x sensor you need to connect an SEK-SCD3x to a Sensorbridge. Upon connecting the SCD3x you can:
- Choose a custom name for the sensor which will also be displayed in the plot
- Choose to log less data points in the range of 'every sample' to 'every 1000th sample'
Below you can find how to change specific functionalities regarding the ASC (Automatic Self Calibration) and FRC (Forced Recalibration) algorithms
The algorithms ASC and FRC adapt the calibration of the SCD30, which allows for compensation of the sensors' drift over the entire concentration range. Both algorithms require only a single reference value for the desired manipulation. It is important to note that FRC and ASC do not differ in the applied adaption of the calibration -- using the same reference value for ASC and FRC will result in an identical manipulation of the calibration.
The major difference between ASC and FRC is the source of the reference value. FRC requires an input from the host site whereas ASC generates a reference value autonomously from historical sensor data. For calibration in a production line, we recommend to apply FRC after assembly of the device. In applications where the end device is placed in well-ventilated buildings, we recommend to activate ASC to account for potential sensor drifts. If conditions at the end user do not fulfill the requirements necessary for ASC, FRC provides means to mitigate deviations.
You can find more information about the ASC and FRC in the application note Field calibration for SCD30.
For testing purposes, the FRC feature can be executed by using the Sensirion SEK EvalKit by going through the following procedure:
- Connect the SCD30 to the SEK EvalKit and start the ControlCenter software.
- Open the Setting dialog box of SCD30:
- Hit OK and confirm FRC implementation
For testing purposes, the ASC feature can be switched on and off via the Sensirion SEK EvalKit by going through the following procedure:
- Connect the SCD30 to the Sensorbridge and start the ControlCenter software.
- Open the Setting dialog box of SCD30
- Toggle the ASC setting.
Please note:
Continuous automatic self-calibration can be (de-)activated with the following command. When activated for the first time a period of minimum 7 days is needed so that the algorithm can find its initial parameter set for ASC. The sensor has to be exposed to fresh air for at least 1 hour every day. Also during that period, the sensor may not be disconnected from the power supply, otherwise the procedure to find calibration parameters is aborted and has to be restarted from the beginning. The successfully calculated parameters are stored in non-volatile memory of the SCD30 having the effect that after a restart the previously found parameters for ASC are still present. Note that the most recently found self-calibration parameters will be actively used for self-calibration disregarding the status of this feature. Finding a new parameter set by the here described method will always overwrite the settings from external recalibration and vice-versa. The feature is switched off by default. To work properly SCD30 has to see fresh air on a regular basis. Optimal working conditions are given when the sensor sees fresh air for one hour every day so that ASC can constantly re-calibrate. ASC only works in continuous measurement mode.
The ASC status is saved in non-volatile memory. When the sensor is powered down while ASC is activated SCD30 will continue with automatic self-calibration after repowering without sending the command.
Please find more information regarding the ASC on the Interface Description Sensirion SCD30 Sensor Module.
Important:
The source of truth are always the application notes and the datasheets for the sensor. The information provided in this manual is indicative, subject to change and has as a goal to guide the users for the use of the tool,
To evaluate the SCD4x sensor you need to connect an SEK-SCD4x to a Sensorbridge. Upon connecting the SCD4x you can:
- Choose a custom name for the sensor which will also be displayed in the plot
- Choose to log less data points in the range of 'every sample' to 'every 1000th sample'
The user can interact with the SCD4x the same way with the SCD3x for the ASC and FRC. Please refer to the SCD3x section for how to turn on/off the ASC and FRC through ControlCenter.
Please note:
For ASC and FRC, ControlCenter sends the commands to the sensor and reads the status from it, this means that the behavior is defined by the sensor and not from ControlCenter. You can find more information regarding the behavior in different modes in the SCD4x Datasheet and in the SCD4x Low Power Operation application note and in the SCD4x CO2 Sensor Evaluation Kit: Introduction video.
To evaluate the SPS30 sensor you need to connect an SEK-SPS30 via the supplied USB cable to the laptop. Upon connecting the SPS30 you can:
- Choose a custom name for the sensor which will also be displayed in the plot
- Choose to log less data points in the range of 'every sample' to 'every 1000th sample'
- Switch the auto cleaning 'on/off'
- Choose the auto cleaning interval if auto cleaning is enabled
- Trigger cleaning manually
To evaluate the SFA30 sensor you need to connect an SEK-SFA30 to the measuring computer via the supplied USB to UART cable. Upon connecting the SFA30 you can:
- Choose a custom name for the sensor which will also be displayed in the plot
- Choose to log less data points in the range of 'every sample' to 'every 1000th sample'
Please refer to the datasheet and the developers' website for more in depth information.
To evaluate the SLF3S sensor you need to connect the evaluation kit to the measuring computer via the supplied USB cable and the adapter cable as shown in the picture.
Upon connecting the SLF3s you can:
- Choose a custom name for the sensor which will also be displayed in the plot
- Choose to log less data points in the range of 'every sample' to 'every 1000th sample'
- Select which type of liquid to measure by changing the calibration between water and Isopropyl Alcohol (IPA)
Please refer to the datasheet for more in depth information.
To evaluate the SDP3x or SDP8x sensor you need to connect an SEK-SDP3x or SEK-SDP8x to the SEK-Sensobridge via the supplied USB to RJ45 cable. Upon connecting the SDP3x/SDP8x you can:
- Choose a custom name for the sensor which will also be displayed in the plot
- Choose to log less data points in the range of 'every sample' to 'every 1000th sample'
- Change the temperature compensation mode from Differential Pressure to Mass flow
- Adjust the mesurement unit
For more information please refer to the datasheets for SDP3x and SDP8x.
The main functionality of ControlCenter is to visualize the live measurements from the different sensors. This is why the plot section is one of the most important elements of the application and our goal is to create an experience as intuitive as possible.
Upon connecting a sensor via SensorBridge or via a dedicated cable and clicking refresh if ControlCenter is running or launching ControlCenter if it is not running the sensors are automatically identified and a set of predefined plots are generated automatically. The plots are automatically bundled based on the measurement type. For example, when connecting an SCD41 and an SHT40. We see the following plots:
-
CO2:
-
SCD41 measurements connected on port 2 of SensorBridge
-
-
RHT:
-
Relative Humidity from the SHT4x sensor inside the SCD41 connected on port 2 of SensorBridge
-
Temperature from the SHT4x sensor inside the SCD41 connected on port 2 of SensorBridge
-
Relative Humidity from the SHT4x sensor connected on port 1 of SensorBridge
-
Temperature from the SHT4x sensor connected on port 1 of SensorBridge
-
On each plot on the top right there is a green cogwheel where the user can get in the plot settings. The settings might differ slightly per different signal. The user can:
- Toggle on/off the autoscaling
- Adjust the time format
- Toggle on/off the data value visualization on hovering over the data
- Adjust the minimum range for the y axis of the plot
- Restore the defaults
The user interaction regarding plots is very intuitive. ControlCenter provides a legend to help users familiarize themselves with the interaction when hovering over the "?" icon on the top left of each plot. The legend shown is the following:
- By double clicking the right mouse button inside the plot area the view is reset
- Since the plotting of the measurements is live, the user is restricted from going back in time on the x axis
- Using the center mouse wheel, will zoom in/out on the y axis towards the area the mouse pointer shows
- The same functionality can be achieved by holding the right mouse button and dragging up and down with the mouse
- Moving up and down in a zoomed in plot is done by holding the left mouse button and dragging up and down with the mouse
As mentioned in earlier sections, the plots in ControlCenter are automatically generated to make the experience of the user as intuitive and easy as possible. In addition to the automatically generated plots, the user has the option to create custom plots by navigating to the custom plots section on the bottom left of the application.
Upon clicking the button, a pop up window appears to create the custom plot. The user can select which signals from which sensors will be displayed on the custom plot as well and add them, as well as create a name for the custom plot.
Upon creating the plot, a new tab is created with the signals of the custom plot stacked.
Please note:
The custom plot is persistent between refreshing of the sensors but not between restart of the application.
Apart from visualizing the live plots another main functionality of ControlCenter as an evaluation tool is to facilitate in the logging of the measurements for different experiments during the applications.
By default, logging is enabled for all of the sensors and the logging starts together with the measurement.
The logs are stored in EDF files. The EDF file is a proprietary Sensirion format modeled out of the CSV format. Therefore it is compatible with Microsoft Excel and other csv file handling capable editors.
Under Settings -> Application Settings, the general ControlCenter settings can be found. Here you can:
- See in which directory the log files are saved and choose a different directory.
- Choose between logging data from each connected sensor into its own log file (default) and logging all data from connected sensors into one single file.
- Change the temperature between Celsius and Fahrenheit degrees
- Adjust the Plotting line thickness
A really important aspect of our mindset at Sensirion is to actively solve problems of our users, therefore gathering feedback and supporting our users is of outmost importance to us.
You can provide generic feedback for ControlCenter or request support through the feedback button located in two places in ControlCenter:
- Under the help menu tab where you can also find the link to this manual
- Through the feedback button on the top right corner of the main view of ControlCenter
Alternatively you can find the links also here:
If you request any type of additional support please do not hesitate to contact us by writing a quick note to [email protected] with the topic 'ControlCenter Feedback'.
Dataviewer is the sister tool of ControlCenter to visualize logged measurements. Dataviewer can recognize edf files and visualize the measurements in a grid of plots
Dataviewer can be accessed as a completely separate program or can be launched through ControlCenter by clicking the Dataviewer Button on the left side of the application.
When launched through ControlCenter, DataViewer automatically loads the current log of measurements.
Over the next sessions, we will go through what are the EDF files, how to open a log file on DataViewer, How to navigate the plots and we will finish with a brief explanation of our algorithms processing section of DataViewer.
EDF is a (UTF-8 encoded) plain text file modeled after the CSV data exchange format. It is an internally standardized measurement data format at Sensirion. You can recognize them by the file ending: mydatafile.edf. If you use the latest version of Sensirion ControlCenter all data will be logged in EDF files.
When ignoring the first few metadata lines that are all prefixed with the hash character (#), the EDF format is fully compatible with CSV files using the <tab> column separator. Sensirion ControlCenter logs all data as EDF files.
Since EDF files are text files, they can be opened and viewed with any text editor. If you installed the latest version of Sensirion ControlCenter on a Windows PC double-clicking EDF files will open it in Microsoft Excel, provided that Microsoft Excel is installed.
Most data analytics programs that support CSV files will be able to open or import EDF files when treated as CSV files. In some cases, it might be necessary to change the file ending from .edf to .csv and/or the header lines that are prefixed with the hash character (#) must be removed using a text editor. It is advisable to keep a backup of the original file before performing those changes.
When opening EDF files with Microsoft Excel the data should be displayed in a meaningful way, similar to the textual representation of the file. However, in some cases related to regional/locale settings, Microsoft Excel misinterprets the data. If your data looks like this it is most likely due to Excel misinterpreting the decimal separator. EDF always uses the dot (.) character as decimal separator, which may have a different meaning in your regional settings. E.g. If your regional settings use the dot (.) character as thousands-separator, the textual value "24.3202" (corresponding to a temperature of roughly 24°C degrees centigrade) will be misinterpreted as 24_320_200. This can be seen here. There are several solutions to this particular problem:
Solution 1: Import the EDF file with the Text Import Wizard. This solution will only affect the file you import but not any other files
- Under the advanced option, you can enter "." for decimal separator and some other symbol for the thousands separator. The thousands separator doesn't matter because it is not used in EDF files. Just make sure that it is different from the decimal separator.
- For more information see the full description of the text import wizard on the official Microsoft Office support website.
Solution 2: Change the settings for all Excel files
- This affects all Excel files but not any other office products.
- Follow the step-by-step solution on the official Microsoft Office support page or office tooltips.
Solution 3: Change the system settings
- This changes the system default and, in turn, all applications that use the system default, e.g. Excel, Word or any other program that might rely on it.
- Follow the step by step solution on office tooltips.
Opening a log file through DataViewer is very intuitive, it can be simply done by either double clicking on the edf file itself if DataViewer is associated with this filetype or if Dataviewer is open you can use the "+" symbol on the bottom left part of the application as highlighted in the picture
Dataviewer is split in 4 different sections:
- Navigation panel
- Plot section
- Timeline slider
- Sensor visualization settings
The active log files sorted by date are shown in the navigation panel. Upon clicking on a log file you can see the relevant information about the measurement and the sensor used.
In this section all the signals present in the measurement file are plotted in a similar way with ControlCenter. The signals are automatically assigned to tabs, custom plots are also saved and visualized if the logging functionality was enabled for them.
More information about the plot interaction can be found in a latter section.
The timeline bar situated on the bottom of the application is used to travel between different points in time. The timeline is in actual date timestamps to facilitate the user with all the different measurements.
The range of the timeline can be adjusted to by dragging either of the red bars on each side of the timeline bar. The plots are automatically adjusted to fit the range of the timeline bar.
In addition as shown in the plot interaction section later on, zooming in on a plot adjusts the range of the timeline bar accordingly.
All the sensors present in a measurement as well as the computed algorithms are shown in this panel.
- By clicking the "eye" symbol you can hide/show the measurements from a specific sensor
- By clicking on the sensor name you can highlight the measurements from this specific sensor by making them bold
The user interaction regarding plots is very intuitive. DataViewer provides a legend to help users familiarize themselves with the interaction when hovering over the "?" icon on the top left of each plot. The legend shown is the following:
- Click with the right mouse button the small "A" symbol on the bottom left side of the plot area to reset the view
- The same functionality can be achieved by right clicking inside the plot area. The area resets to the default view
- Zooming in a specific area of interest is done by holding the right mouse button and dragging to select the specific area.
- Using the center mouse wheel, will zoom in/out on the y axis towards the area the mouse pointer shows
- Panning left and right across the timeline when zoomed in a plot is done by holding the left mouse button and dragging left and right with the mouse
For SEN5x and SGP4x sensors, you can create your own custom algorithms for VOC and NOx index by clicking the algorithms button in the navigation panel on the left of the application.
By pressing the "+" button you can create virtual VOC index algorithms with different configuration parameters to tune the sensor in your specific application.
There are different parameters which can be set by the user to influence the behavior of the NOx Algorithm. For each parameter, you can place the cursor on top of the i icon to receive more information about it (incl. default values in case you forget).
Enter the values in the fields keeping them within Min and Max ranges . Feel free to play with the parameters; you cannot destroy anything. Confirm the settings by pressing the save button.
For more information, please, consult the application notes Sensirion's VOC Index for Indoor Air Applications and Sensirion's NOx Index for Indoor Air Applications.
Internal changes and bugfixes
Features
- Allow users to provide feedback for ControlCenter
- Support for SDP33
- Show single data point for plots on hover (only when measurement is stopped)
- Plot configuration is persisted
- Add plot grid to ControlCenter
Bugfixes
- ControlCenter for Ubuntu 22.04 runs without installing additional packages
- Fix issue with multiple flow sensors attached
Note
For ControlCenter and DataViewer version 1.35.x you need to install following linux packages: apt install libqt6quickwidgets6 libqt6uitools6
Features
- Add support for Ubuntu 22.04 LTS
- Add support for SFM3304 with Nicolay Cable
Bugfixes
- Fix issue with bold fonts not correctly showing on some Windows and OSX computers
- Fix issue of SCD4x settings not updated in view after factory update
Features
- Improved ControlCenter App Menu for better navigation
- Added the ability to persistently change - - Plot line thickness in ControlCenter settings
- Visual improvements on fonts for ControlCenter and DataViewer
- Improved the data management for DataViewer
- Added group operation support for DataViewer such as:
- remove all
- show/hide all
- highlight/unhighlight all
Bugfixes
- Fix issue when device is lost, entries are duplicated
- Fix crash on Ubuntu when SensorBridge with new PID/VID is connected for the first time
Features
- Add Support for SFM4300-50 product line
- Improved tooltips in the sensor configuration window
- UI and Plot Improvements in DataViewer
- Improve legends
- Replace Sensor by Data tab
- Only supported I2C frequencies can be selected in device configuration for ControlCenter
Bugfixes
- Fix read-out of serial number for SDP products
- Probing for Nicolay cable
- Do no show disconnect warning on firmware update
- Consistent tabs between ControlCenter and DataViewer
Features:
- Add signal units on DataViewer plots
- Support persistence of algorithm parameters in DataViewer
- Make DataViewer plots not consistent with ControlCenter
Bugfixes
- Fix zoom and resize issues in DataViewer
- Increase supported accuracy for plot auto-scale to 4 digits
- Fix double validator in sensor settings broken with German language settings
- Fix SFM4100 insufficient probing issue. This caused several SFM4100 products to show up when a defective sensor is connected
- Fix Nicolay cable not always detected on OSX and Linux
Features:
- SEN5x Firmware 1.0 support with all VOC, NOx and RH/T engine parameters
- Add support for all SDP31 and SDP8x products and I2C addresses
- Add support for SGD41 in ControlCenter
- Support SLF3S-4000B
- SVM41 startup-spinner and improved firmware upgrade
Bugfixes:
- DataViewer VOC/NOx algorithm tuning support
- Keep zoom level on add algorithm or data
- Keep signals hidden when adding algorithm
- Fix reset timeline button