System for monitoring an environment

1. A sensor unit connectable to a gateway, and configured for measuring at least one environmental parameter, and configured to be calibratable relative to said environmental parameter(s), and further configured for storing:

electronic information associated with a validated calibration status of the sensor unit,

a sensor measurement measured by the sensor unit,

one or more associated calibration values of a calibration associated with the sensor measurement, wherein the sensor measurement is traceable to the calibration values via the use of a known reference, thereby obtaining traceability between the sensor measurement and the calibration values, and wherein the sensor unit at least partially simultaneously stores the sensor measurement and the one or more associated calibration values of the calibration associated with the sensor measurement, and

a unique identity of the sensor unit,

wherein the validated calibration status of the sensor unit comprises a calibration certificate, the calibration certificate being an electronic document,

wherein the electronic document comprises verifiable authenticity and authorship information; and

wherein the at least one environmental parameter is configured to be transmitted from the sensor unit along with the electronic information associated with the validated calibration status comprising the electronic document and the unique identity of the sensor unit, thereby securing that the calibration status specific to the uniquely identified sensor unit is tagged to the sensor measurement.

2. The unit according to claim 1 , wherein the validated calibration status further comprises an encrypted fingerprint stored on the sensor, the fingerprint enabling a secure validation of the calibration certificate.

3. The unit according to claim 2 , wherein the fingerprint is obtained by a hashing function.

4. The unit according to claim 1 , wherein the validated calibration status further comprises a validated traceable calibration status.

5. The unit according to claim 1 , wherein the unique identity of the sensor unit is a hardware encoded identification for machines.

6. The unit according to claim 5 , wherein the hardware encoded identification for machines is a silicon serial number.

7. The unit according to claim 1 , further configured for storing electronic information associated with the measured parameter(s).

8. The unit according to claim 1 , comprising an identification circuit (ID IC) as a hardware encoded identification.

9. The unit according to claim 8 , wherein the ID IC is configured for tracing or tagging the electronic information stored on the memory unit.

10. The unit according to claim 1 , wherein the sensor unit is configured to be disposable.

11. The unit according to claim 1 , wherein the gateway is configured for receiving and storing the electronic information of the sensor unit.

12. The unit according to claim 1 , wherein the gateway is configured for replaceable sensor units.

13. The unit according to claim 1 , further comprising a first indicator unit configured to indicate an attachment status between the sensor unit and gateway.

14. The unit according to claim 13 , wherein the first indicator unit is visible.

15. The unit according to claim 1 , further comprising a second indicator unit configured to be activated when the measured parameters deviate from a predetermined threshold value.

16. The unit according to claim 15 , wherein the second indicator unit is visible or an electronic information.

17. A method for calibrating multiple temperature sensor units, comprising the steps of:

providing multiple temperature sensor units each according to claim 1 ,

mounting the multiple temperature sensor units on a rack,

arranging the rack with the temperature sensor units in a liquid, and

performing a calibration routine such that each temperature sensor units is calibrated relative to the temperature of the liquid and storing a calibration state on each temperature sensor unit and associating each temperature sensor unit with a unique identity.

18. The method according to claim 17 , further comprising the step of storing a calibration state on each temperature sensor unit and associating each temperature sensor unit with a unique identity.

19. The unit according to claim 1 , configured for encryption or hash securing the measured and stored parameter(s).

20. The unit according to claim 1 , wherein the gateway is configured for receiving, storing, and transmitting the electronic information of the sensor unit.

21. The unit according to claim 1 , wherein the at least one environmental parameter is temperature and/or humidity.

22. The unit according to claim 1 , wherein the sensor unit is configured for being directly mechanically and/or electrically detachably attached to the gateway.

23. The unit according to claim 1 , wherein the verifiable authenticity information further comprises an indication of alteration or non-alteration of the calibration certificate since a production of the calibration certificate from a calibration laboratory.

24. A gateway system for monitoring an environment with respect to at least one environmental parameter, the system comprising:

at least one calibratable sensor unit configured for measuring at least one environmental parameter, said sensor unit having a unique identity and a validated calibration status associated with electronic information stored thereon,

wherein the sensor unit comprises raw measurement data measured by the sensor unit and associated calibration values of a calibration for each measurement data, wherein the measurement data is traceable to the calibration values via the use of a known reference, thereby obtaining traceability between the raw measurement data and the calibration values,

wherein the validated calibration status of the sensor unit comprises a calibration certificate, the calibration certificate being an electronic document,

wherein the electronic document comprises verifiable authenticity and authorship information,

at least one power unit connectable with the sensor unit(s) and configured for receiving, storing, and transmitting information pertaining to the unique identity, the validated calibration status, and said environmental parameter(s) from said sensor unit; and

wherein the at least one environmental parameter is configured to be transmitted from the sensor unit along with the electronic information associated with the validated calibration status comprising the electronic document and the unique identity of the sensor unit, thereby securing that the calibration status specific to the uniquely identified sensor unit is tagged to the measurement data.

25. An environmental surveillance system comprising a plurality of networked gateway systems according to claim 13 , wherein each of the gateway systems are configured to transmit information pertaining to the unique identity, the validated calibration status, and environmental parameter(s) from each sensor unit connected to said gateway system, and wherein the environmental surveillance system is configured to receive said information via said network, process said information in order to detect an outlier and store the unique identity, the calibration state and said environmental parameter(s) from each sensor unit.

26. A method of using a sensor unit connectable to a gateway, and configured for measuring at least one environmental parameter, and configured to be calibratable relative to said environmental parameter(s), the method comprising steps of:

storing electronic information associated with a validated calibration status of the sensor unit on the sensor unit,

storing a sensor measurement measured by the sensor unit on the sensor unit,

storing one or more associated calibration values of a calibration associated with the sensor measurement for obtaining traceability between the sensor measurement and the calibration values, wherein the sensor measurement and the one or more associated calibration values of the calibration associated with the sensor measurement are stored at least partially simultaneously on the sensor unit, and

storing a unique identity of the sensor unit on the sensor unit,

wherein the validated calibration status of the sensor unit comprises a calibration certificate, the calibration certificate being an electronic document,

wherein the electronic document comprises verifiable authenticity and authorship information; and

wherein the at least one environmental parameter is configured to be transmitted from the sensor unit along with the electronic information associated with the validated calibration status comprising the electronic document and the unique identity of the sensor unit, thereby securing that the calibration status specific to the uniquely identified sensor unit is tagged to the sensor measurement.