The spare parts needed for repair of SPS310 spirometer sensors with trumpet outlet are no longer available, meaning we can no longer repair SPS310 sensors. The model was in sale from 2000-2009.
You may identify the model by looking at the trumpet shape in the bottom of the handle, where the PC-cable goes into the spirometer sensor, or look at the silver sticker.
If your spirometer has been repaired before, your trumpet spirometer may look like this:
Ask your supplier for a discount when upgrading your old SPS310 spirometer for a newer model.