Flow rate chart card with background

Who it’s for

Process engineers, plant operators, and maintenance technicians ask “can I see flow rate trend and operating status at a glance?” The background variant combines a trend chart with a full-card color signal for wall-mounted control room displays.

What it does

A device reporting flowRate = 22 m³/hr renders a time-series trend line, the current value, and delta figures on a card whose entire background fills with the operating level color: blue for Low (below 10 m³/hr), green for Normal (10–30 m³/hr), orange for Elevated (30–50 m³/hr), and red for High (above 50 m³/hr).

• Full-card background color makes flow rate operating level readable across a room without reading the number
• Time-series trend chart shows whether flow rate is stable, rising, or declining
• Delta percentage and absolute delta quantify how much flow has changed from the previous period
• Shows one sensor’s data per widget; add multiple widgets to monitor different pipes or pumps side by side

How to set up

Data keys

Key	Role	Type	Description
flowRate	Chart series	Timeseries	Flow rate in m³/hr; change the key name to match your device’s telemetry key
Latest	Latest value	Timeseries	The headline figure above the chart. Its own color ranges are where the band colors are edited
Delta percent	Percentage change	Timeseries	Change against the previous period, as a percentage
Delta absolute	Absolute change	Timeseries	Change against the previous period, in the key’s own unit

The widget ships with a simulated function datasource key labeled Flow rate, so it draws random values until you point the datasource at a device and rename the key.

To point it at your own device: open the dashboard in edit mode, open the widget’s Datasources, pick the entity or entity alias, and replace the function key with the key your device reports.

How to customize

• To change the operating thresholds — edit the color ranges on the Latest data key.
• To change the background colors — edit the color of each range on the Latest data key.
• To change the units — change the Units field in the widget settings to match your flow meter’s output.

Tips

• On a control room wall display, the colored background announces current flow status from across the room while the trend chart shows whether the process is stable or changing.
• Use this card when you need both a trend signal and at-a-glance status in a visually prominent format — for example, one card per pipeline segment on a process overview screen.
• Use consistent operating colors across all flow rate widgets.