Paroscientific Digiquartz® Model 745 High Accuracy Pressure Standard. Meteorological sensor that logs pressure data.

The measurement frequency of this instrument is 1Hz, with a data frequency of 2 minutes for the datasets held at CEDA. For the purposes of the Snowdon Mountain Railway GNSS experiment, it was mounted on a train of the Snowdon Mountain Railway (SNTR) as it travelled up and down the mountain, co-located with a GNSS receiver.

This instrument was hosted by ETLG Ltd.