Air Quality Sensor Calibration
Learn how you (as an advanced user) can calibrate your Verkada Air Quality Sensors
Verkada Air Quality Sensors have an assortment of different readings that allow you to gain more insight into your building or monitor areas where video monitoring is not allowed. The data available depends on the model of the sensor.
You can use Verkada sensors to monitor temperature, humidity, carbon dioxide, and other environmental conditions throughout indoor spaces to identify possible impacts on human health or asset performance.
The Verkada Air Quality Sensor calibration interface:
Allows you to calibrate your sensors to your specification needs and easily download a certificate to verify compliance.
Provides another level of actionability and verification to the rich data collected by Verkada sensors.
Our sensors are factory-calibrated and rated to the specified
accuracy in the SV20 Series Air Quality Sensor overview
for a minimum of 10 years.
Calibrate a Verkada sensor
The temperature and humidity sensors onboard the SV20 Series and SV11 sensors are individually tested and calibrated. To ensure their continued accuracy, recalibration (using an external reference device) is necessary.
For the calibration, Verkada uses transfer standards, which are subject to a scheduled calibration procedure. The calibration of the reference, used for the calibration of the transfer standards, is National Institute of Standards and Technology (NIST)-traceable through an ISO/IEC 17025 accredited laboratory.
Enable sensor calibration globally
View sensor calibration data
On Sensor Calibration, select the reading you want to calibrate.
You should be able to see all of your devices, their site, calibration status, current reading if an offset has been applied, when and who updated it, and the next due date.
Device Name—Name of the device you want to calibrate.
Site—Location of the device you want to calibrate.
Status—Status of the device.
N/A—No calibration has been applied.
Calibrated—A calibration profile has been applied.
Past Due—The calibration profile has expired.
Current—Current reading of the selected sensor reading.
Offset—Offset error that is applied in the calibration profile.
Last Updated—Date the sensor was calibrated.
Updated By—User who applied the calibration.
Due Date—Due date for the next calibration. The calibration procedure should be done on or before this date.
Using a reference device, take a reading while holding your reference device next to your sensor. The closer you are to the sensor, the more accurate your calibration is.
a. Enter this reading in the Reference Reading field.
b. If you see an "Offset exceeds range" warning, this means that the device is reading a value past its typical accuracy. We recommend that you check your reference device and ensure you have properly followed the installation guidelines.
c. If you see the "Offset limit reached" warning, this means you’ve reached the offset limit for the reading. Either your reference device is wrong or your sensor may not be operating properly. For assistance, contact Verkada Support.
Download the most recent calibration certificate
You may need to download a calibration certificate to provide to a third party. You can do this done during the calibration process or you can retrieve it at a later date using the calibration page.
When you download a calibration certificate, it creates an audit entry in the org-wide audit log.
How it works
View calibration history
Verkada stores all of the different calibration events and certificates, as the calibration history, for each device. This means that every action is permanently logged, when you:
Apply a calibration
Reset a device to factory calibration settings
When you download a calibration certificate, it creates an audit entry in the org-wide audit log.
The history log shows the following:
What event took place (Factory Reset | Calibration)
The date when the event occurred
The offset that was applied
The reference reading that was taken during that calibration
The certificate number for that calibration
The user who made the change
Download calibration reports
Continue from how to View calibration history.
Reset a sensor’s calibration to factory defaults
Command allows you to use the factory calibration settings or reset your sensor back to factory default settings if a calibration profile is no longer needed.
Your sensor must be calibrated to reset it to factory defaults.
Click Reset to confirm to reset the factory settings for the specified device.
If successful, you will see a "Factory calibration reset complete" banner.
If unsuccessful, contact Verkada Support.
FAQ
What kind of calibration does Verkada offer?
Currently, the Air Quality Sensor Calibration page allows you to apply a standard one-point linear calibration to your sensors. Verkada uses a single point to calculate the difference between the reference value and the raw reading to create an offset correction for the error between the two, and then apply that offset to the sensor reading.
For example, if your sensor’s raw Temperature reading is 72˚F (22˚C), but your reference device shows 71˚F (21˚C), and your offset is – 1˚F. Once the calibration is applied, if your raw reading is 76˚F (24˚C), your sensor will show 75˚F (23˚C) in Command.
Need more help? Contact Verkada Support.
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