Retrotec’s magnehelic gauge system (right) – Retrotec DM-2 User Manual
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©Retrotec Inc. 2012
on the gauge. Note that it's important to zero the analog gauge by tapping the front panel before use,
as readings will be incorrect if the gauge does not read zero before any tubes are attached.
Figure 5: Digital and analog gauges display a pressure of 50.2 Pa. (RetrotecDigital DM-2 left); Retrotec’s magnehelic
gauge system (right).