# Calibrated sensor resolution

The calibrated sensor resolution is a parameter that depends on the calibrated sensor type. This value must be entered correctly as it is used for the uncertainty calculation.

The table below presents the typical values for standard temperature sensors used in B3 system.

| Sensor type                                     | Node type        | <p>Calibrated sensor resolution</p><p>\[°C]</p> |
| ----------------------------------------------- | ---------------- | ----------------------------------------------- |
| FT011 and FT04x Digital temperature sensor      | BBO, WIN, S2     | 0.0625                                          |
| FH009 and FH010 Digital RH / temperature sensor | BBO, S2          | 0.01                                            |
| FT012, FT003, FT008, FT020 PT100 sensor         | BBO, WIN, S2     | 0.01                                            |
| Parent temperature sensor                       | WIN              | 0.01                                            |
| FH012 and FH013 Digital RH / temperature sensor | BBO, WIN, S2     | 0.01                                            |
| FU002 Transport Logger card Standard            | Transport Logger | 0.5                                             |
| FU003 Transport Logger card High Resolution     | Transport Logger | 0.0625                                          |
| FU004 Transport Logger card High Temperature    | Transport Logger | 0.0625                                          |
| BTiny temperature sensor                        | BTiny            | 0.05                                            |

For any other sensor types the correct resolution value must be defined.

A look at the sensor readings in B3 may be helpful as the resolution is the smallest change in the readings that can be observed for a sensor. A standard digital sensor like FT011 in stable conditions has the readings like in the example below.

<figure><img src="https://2641614999-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0lFbL66Jd9kHaF8jF97P%2Fuploads%2FAGGFpBMejRCuuVpzqGr6%2Fimage.png?alt=media&#x26;token=59f76634-a149-483a-90a6-379953311cba" alt=""><figcaption></figcaption></figure>

We can see that the minimum change here is 0.06°C. If we can confirm this observation on a longer set of values, then we may say that the resolution is 0.06°C.

The readings for a WIN node built-in parent sensor indicate that this sensor has resolution of 0.01°C.

<figure><img src="https://2641614999-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0lFbL66Jd9kHaF8jF97P%2Fuploads%2FFlqoFIdUeJABxRGemgfG%2Fimage.png?alt=media&#x26;token=6cdadae3-43e0-45e0-8e53-9c0b2f73a6dd" alt=""><figcaption></figcaption></figure>