Public Devices

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Compressed air costs us more than lighting and heating together. This is where I prove it to people.

Dewatering the pit. If this stops, work stops, so it gets watched properly rather than checked on.

Broiler house. If ventilation fails you lose the flock, not a day of growth.

Feed pump on the boiler. It threw a bearing in March and took the boiler down with it. Now it is watched.

Thirty seven degrees, tight tolerance. A short excursion overnight invalidates a week of work and you would never know.

Frost watch through the season. One night is all it takes.

Monitoring at the board. We had equipment failing and nobody could say why. Turned out to be sags, not the equipment.

Cycle counts, utilisation, and every short stop. Quoted capacity and actual capacity have never been the same number.

District meter. Night flow is the number that matters. Whatever is still moving at three in the morning is leaking.

Spindle load and utilisation. Mainly useful when quoting.

A zone on ageing pipework, metered on its inlet against the volume billed within it. Physical leakage runs at the same rate all night, so where the loss is water in the ground rather than water unbilled, the minimum night flow says so plainly.

Sat beside a busy road. Mornings are worse than I expected. Still air holds everything in until the sun gets up.

22 kW drive on line two. The vibration trend is the entire reason it is monitored.

Small server room on a precision unit. Honestly this is here so I know how much headroom is left in the hottest week of the year.

96 kWp across the warehouse roof. I check yield against irradiance most mornings. When it drifts below where it should be, the panels want washing.

No grid out here at all. Solar and the battery bank carry most of it and the set fills the gap. I mostly watch the fuel. We lost about 200 litres over two months before this went in.

LPG in a hotel kitchen. Reads zero nearly always. That suits me fine.

18 kWp teaching array. Students can see where the losses go instead of taking my word for it.

Incoming supply for the whole building. Tenants ask what happened. Now I can tell them.

One residential zone of a distribution network, metered on its single inlet, with the volume billed inside the zone alongside it. The gap between the two is non-revenue water, and splitting a network into zones is what turns one town-wide loss figure into somewhere to send a crew.

One classroom. Watch CO2 climb through a lesson and nobody argues about opening a window again.

Main cold store, product for export. Since we started logging door time the arguments stopped.

Carbon monoxide in the underground car park. The fans used to run on a timer whether anyone needed them or not.