Apparatus and Associated Methods

A computer program comprising computer code configured to determine the temperature and fluid relative vapour pressure of an environment using an apparatus,

• the apparatus comprising first and second sensor elements, the first sensor element comprising a first sensor material and the second sensor element comprising a second sensor material, wherein the first sensor material is configured such that an electrical property of the first sensor material is dependent upon the temperature of the environment in which the first and second sensor elements are located, and the second sensor material is configured such that the same electrical property of the second sensor material is dependent upon the relative vapour pressure of a fluid in the environment in which the first and second sensor elements are located, the respective temperature and fluid relative vapour pressure dependencies of the first and second sensor materials allowing the temperature and fluid relative vapour pressure of the environment to be determined based on combined measurements of the electrical property of the first and second sensor materials in the environment,
• the computer code configured to measure the electrical property of the first and second sensor materials in the environment and determine the temperature and fluid relative vapour pressure of the environment based on the combined electrical property measurements.