Replacement chart strips are available for dual thermohygrographs from G. Lufft Mess- und Regeltechnik GmbH. These chart strips are compatible with the following device models: 8170, 8172. The following chart strips are available for Lufft dual thermohygrographs: TTH 825, TTH 737, TTH 713, TTH 735, TTH 711, 733.
You can find the respective device number on the base plate of your Lufft device. The diagram number can be found at the bottom right of the recording paper.
