Need to automagically add a particular number value to each of your sensor readings?

This write-up shows you how to use calculators for adding a constant to any of you sensor readings.

For example, when you need to add a number value (like 100) to every IoT device measurement, you’ll use this feature to set that up so it happens automatically.

First up you’ll click your IoT device in your Device Manager on

Then go to Calculators under the orange Data Path drop down menu in the upper right. It’s highlighted with a red oval in the screenshot.

Choose the type of sensor calculator you want to set up. In this case, you’ll configure the basic calculator for adding a constant to incoming sensor information.

Give your calculator a name as if it’s 1 of your adorable pets. Then click the blue + / plus button to create your new calculator and pop up the Edit Calculator dialog box.

In the calculator configuration window you’ll want to select your Output channel. This is the field on where the calculator results will be saved, written, and stored. In the example you’ll see we’ve picked the Calculated 01 sensor field as the output channel.

The Input Channel is the sensor column / field that you’d like to add the constant to.

In the Calculation Variable 1, you’ll type in the value you want to add to each incoming sensor device reading from your Input Channel.

You’ll see in the screenshot that in this example we’re adding 5 to all of the ambient temperature sensor measurements and saving that to the Calc 01 field.

Make sure you’ve got a name that makes sense for your sensor calculator. Type some sensible notes into the text box so you can remember what and why you’re doing these calculations to your sensor data.

Save your new sensor calculator. You’ll see your new sensor calculator is turned on, active, and ready to rock and roll.

Note that if you’ve got multiple calculators you can use the output of 1 calculator as the input to another 1. Just make sure you order your calculation operations by dragging them into the proper order in the general Configure Calculators window.

Now you’ll see that the sensor calculator is busy calculating. In all of the features you’ve now got the sensor calculator fields.

You’re seeing in the screenshots how the example calculator we just set up above now displays in the Device Manager’s IoT device details page, graphs, and Esri Arc GIS maps.

Note that these sensor calculator features can be used with any of your Industrial IoT devices you’ve got connected to

Like all of our customers, you probably manage sensors made by hardware manufacturers around the world, like Flowline, Senix, and Alphasense.

And your calculated IoT sensor readings can be integrated into your Web Dashboards to improve your organization’s remote monitoring capabilities.

Would you like to see additional sensor calculators?

Got any other feature requests for Valarm Tools Cloud /

Whether you need to monitor flood warning systems, bridges, air quality, hydraulics, tanks, water wells, or fleet vehicles with industrial equipment, we’re here and ready to help you. Please don’t hesitate to talk to us.

Get in touch with us at and we’ll work with you, your teams, and your organization to deploy effective remote monitoring systems.