Field contract
After decode, trend pressure in bar (or the unit on the datasheet), battery millivolts, and frame counter. Bleed air after install so the first uplink is not a trapped pocket.
Pair with flow kits on the same LoRaWAN application when you want both branch rate and header pressure.
Named fields
| Field | Type | Notes |
|---|---|---|
| pressure_bar | number | Gauge pressure after install |
| battery_mv | integer | Battery millivolts |
| fcnt | integer | Frame counter |
Example after decode
{
"pressure_bar": 2.15,
"battery_mv": 3220,
"fcnt": 88
}Byte offsets live in the decoder file shipped with the kit. If the first uplink disagrees with this example, trust the shipment file and the factory functional-test record.
Related pages
FAQ
Absolute or gauge?
Stock kits report gauge pressure unless the datasheet says otherwise. Confirm on the quote for sealed vessels.
Can I paste a flow decoder here?
No. Use the PS-270 profile only.
Why is pressure flat while fcnt moves?
The line may truly be stable. If fcnt stalls, the node is silent.
Bands?
EU868 and US915 in the standard quote. Confirm other plans before shipping.