You need to filter sensor measurements from your IoT devices?

Get yourself ready to learn how to use calculators to filter Industrial IoT sensor values by comparing with greater than operations.

This calculator will output a defined value if the input value is greater than the value you specify. Otherwise, the input value is written out unchanged.

For example, if you need to output a specific value like 500, every time your sensors report temperatures above 85 degrees, then you can use this calculator to output your desired value only when your sensor measurements go higher than your threshold, 85. All other sensor value readings will be saved in a new field as the same value as the input, e.g., 84, 28, etc.

To get started go to your Device manager on

Click the IoT device you’d like to set up with calculators.

Next on the device details page, click the Other Calculators button in the drop down options under Configure Data Path. You’ll see it highlighted with a red oval in the web browser screenshot.

Make your new calculator by selecting Compare / Filter : Greater than a constant as the type in the drop down menu.

Click the blue plus / + button to create your calculator after you’ve given your new calculator a name.

Next up is the Edit Calculator window where you’ll configure the settings you want.

Add any notes in the notes field, you’ll see an example in the screenshot where this compare calculator is filtering ambient weather sensor information – whenever relative humidity sensor values are greater than 80%.

Choose the output field / column where you’d like to store your calculator results. In this example we’re using Calculated 06 column

Your input channel is the source of your incoming sensor data that will run against your filter. In this case it’s relative humidity percentage from a Meteo micro-climate weather station sensor.

The 1st calculation variable is the value against which the incoming data is checked. Any sensor measurements greater than this value will trigger the output. In our example we’ve typed in 80 as the comparison number.

Your 2nd calculation variable is the value you’d like to substitute if the incoming sensor data is greater than the value in the calculation variable 1 field.

In this How To Tutorial we’ve used 999 to make it obvious and easy to see when the IoT filter calculator is doing its job.

Click the green save button to save your calculator settings in the clouds.

You’ll now see the results all throughout your software features.

For example, you’ll see your newly born calculator working in your historizer, a.k.a. device details page, showing all of your historical data.

In the screenshot you can see the relative humidity and calc 6 columns are highlighted with red rectangles.

Whenever the humidity sensor measurement is above 80 then the Calc 6 sensor field is 999, and when it’s below 80, then your calc 6 field remains your original, unchanged IoT sensor reading.

Your graphs, Esri 2D and 3D maps, JSON APIs, and all other features now show your calculator results too. Notice how the graph quickly visualizes, with a drastic jump, whenever the weather and humidity change exceeds our critical threshold of 80%. In this test case it’s from me breathing directly on the sensor to nail home the point. Luckily my breath is pretty humid. I bet yours is too.

Since is an open platform, your calculators use Industrial IoT sensor readings from any sensor, like 4-20mA water level sensors used for flood warning systems.

You probably saw in the list of calculators that there a whole bunch of calculators you can use and combine. See our Blog and other write-ups with stories on how to use other calculators like:

You can use calculators with sensors made by any hardware manufacturer. Here are some favorites used by our customers around the world – Flowline, Senix, Alphasense, Yoctopuce, Clairair, McCrometer, EKM, In-Situ, Campbell Scientific, Vaisala, Decagon / METER, and Eno Scientific.

And your organization can use any combination of networking technologies to upload Industrial IoT sensor information to Valarm Tools Cloud in real-time.

Whether it makes the most sense for you to use 3G GSM mobile cell networks, WiFi, ethernet, or other networking technologies like Ingenu, we’ll help you deploy your most effective remote monitoring systems to save you time and money.

Take a gander at our Customer Stories Page with remote monitoring and Industrial IoT sensor use cases, stories from the field, and case study applications.

How does all of your remote monitoring information help you improve your organization’s operations? See our Web Dashboards that visualize, alert, map, and analyze remote assets, environments, and other factors that are important for you and your teams.


Don’t hesitate to get in touch with a ‘Howdy Edward’ in an email to me at