Temperature and Humidity Compensation
Review Sensor App compensation limits and how compensation affects alerts, historical data, and exports.
The Sensor App provides temperature and humidity compensation for correcting a confirmed fixed measurement difference.
Compensation Range and Step
| Measurement | Range | Step |
|---|---|---|
| Temperature | -5.0 to +5.0°C / -9.0 to +9.0°F | 0.1°C; 0.18°F per step |
| Humidity | -5.0 to +5.0% RH | 0.1% RH |
These limits apply to mrd_app on the mocreo branch. Compensation is an offset applied to a reading; it does not change the raw value reported by the node.
How Compensation Affects Alerts and Historical Data
The node reports an uncompensated reading, and the database stores that raw value. When an alert rule is delivered, the threshold is adjusted by subtracting the current compensation; the displayed event value is the raw value plus that compensation.
History queries and exports add the current calibration value to every returned point. Compensation periods are not archived, so changing the compensation also changes how older raw data appears the next time it is queried or exported.