One broker for every BMS and meter operator.

From the plant room to the brokerage, one way in.

Whichever system the site has, its readings arrive the same way: one encrypted connection that the site opens outwards, with its own username and password, and an address on every reading of client, site, plant item and reading.

How the readings get their names.

Nine checks on every reading, and the reading itself is never altered.

Each reading carries its flags and each point a running grade: ok, warn or bad. Counts for every site, and a view of only the flagged ones.

• Out of range: a value that cannot physically be, such as a pressure arriving at a hundred times its true value.
• Unlikely: possible, but outside where that kind of reading normally sits.
• Return hotter than flow on the same piece of plant. Two sensors have usually been swapped.
• Meter gone backwards: an energy, volume or hours counter has dropped. A reset or a swapped meter.
• Frozen: the same number for three hours on a reading that should move. A stuck sensor, not a steady network.
• Gone quiet: nothing heard for four times the usual gap. The last value is re-sent marked stale, so nobody relies on an old number.
• Late or wrong clock: the station's timestamp is well behind, or cannot be believed.
• Unknown unit: a unit that is not on the agreed list. Units are brought to one standard, so Fahrenheit becomes Celsius and psi becomes bar.
• The BMS's own status words travel unchanged alongside the grade.

To the people and systems that need it, and no one else.

Data goes only to recipients you have approved. Each one has its own login and its own permission: which readings, which details and how often.

Where the model helps, and where it is kept out.

• Helps name the readings. For the ones the rules were unsure about, the model suggests the plant item and the reading. It only suggests; an engineer approves.
• Never touches live data. No reading is read, checked, stored or sent by the model. The checks are physics and arithmetic and take a fraction of a second.
• Never reaches the plant. The brokerage cannot change anything in a plant room, with or without a model.
• Where the thinking happens. The Parker link hands every checked reading to the platform, where the model, the watchpoints and the control states work on data they can trust.

Built to be audited and built to be busy.