Flow rate range chart

Who it’s for

Process engineers, plant operators, and maintenance technicians ask “how long has this pipeline been in each flow operating band over the shift or day?” They need a chart that shows not just current flow but the time spent in each zone.

What it does

A device reporting flowRate = 22 m³/hr renders a time-series area chart overlaid on horizontal color bands: 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). The chart background is divided into these zones so operators can instantly see which operating band the flow rate occupies at any point in time. A data zoom slider lets operators examine any sub-period in detail.

• Color-banded area chart shows flow rate trend against operating zone boundaries simultaneously
• Data zoom slider lets operators focus on any time window — a full shift, a process transition, or a specific incident
• 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

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.

Value ranges

Range (m³/hr)	Level	Color
0–10	Low	Blue
10–30	Normal	Green
30–50	Elevated	Orange
50+	High	Red

How to customize

• To change the operating thresholds — open the widget settings and adjust the band boundaries.
• To change the band colors — edit the color for each operating band in the widget settings.
• To change the units — change the Units field in the widget settings to match your flow meter’s output.

Tips

• Use the data zoom slider to isolate a batch run and confirm that flow stayed within the Normal band throughout the production window.
• A line that repeatedly dips into the Low band during a shift is a sign of intermittent issues such as air pockets, partial blockages, or pump cavitation — zoom in to find the exact timestamps.
• Pair with a fluid pressure range chart on the same row to see whether flow dips align with pressure spikes, which can indicate valve-related restrictions.