Propane tank monitoring works by pairing a level sensor mounted on the tank with a delivery-side workflow that turns the reading into a scheduled fill before the customer runs out. The sensor reports the tank percentage (by cellular, satellite, or short-range radio to a gateway); the operator's system combines that reading with usage history and degree-day data to predict the run-out date; and a driver completes the fill and captures the delivery record in the field. The sensing hardware itself comes from third-party telemetry vendors, not from the operator's delivery or dispatch software.
What are the parts of a propane tank monitoring system?
A working monitor is three layers, not one gadget:
- The sensor. A level gauge reader (from telemetry vendors such as Otodata, Anova/Wesroc, or Skytracker) mounted on the tank's dial, reporting tank percentage on a schedule.
- The transport. The reading travels by cellular, satellite, or a local radio-to-gateway hop back to the operator's platform.
- The delivery workflow. The platform predicts the run-out date and schedules a fill; the driver then completes and records the delivery in the field.
How does monitoring turn a tank reading into a delivery?
The reading alone does not fill a tank. The operator's system runs an autofill calculation — current level, the tank size, the customer's historical burn rate, and degree-day weather data — to estimate when the tank will hit the reorder threshold (commonly ~25-30%). That predicted date drops the customer into a route. The driver fills the tank, and the delivered gallons and post-fill level get captured to close the loop and recalibrate the next prediction.
How is monitored autofill different from will-call?
| Dimension | Will-call (customer calls when low) | Monitored autofill |
|---|---|---|
| Who watches the tank | The customer | The sensor + the operator's system |
| Run-out risk | Higher — depends on the customer noticing | Lower — predicted before the reorder threshold |
| Route efficiency | Reactive, often urgent/off-route | Planned, batched into efficient routes |
| Customer retention (LTV) | Lower — easier to switch suppliers | Higher — the service is sticky |
| Best fit | Cost-conscious or new customers | Keep-full residential and commercial accounts |
What still has to happen after the monitor schedules the fill?
The sensor and the autofill math live in the office; the delivery happens in the field, often with no cellular signal. A monitored account still needs a driver to make the fill, and the delivery record still has to be captured at the stop — if it is not, the run-out prediction drifts on stale data and the visit leaves no documentation behind. Monitoring narrows the guesswork about when to go; it does not document the visit once the truck is there.
Where can I read more about the delivery side?
For how operators move customers from will-call onto a keep-full schedule, see converting will-call propane customers to automatic delivery. For how the office reaches the driver once a fill is scheduled, see how propane companies communicate with drivers. This answer is published by Propane Insider.