Not a smart project but another that I need pressure data for, both above and below atmospheric - so gauges required. Can anyone tell me if this is a vacuum gauge?

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And, what do I need to place between a gauge (pressure and/or vacuum) and pressure chamber which will fluctuate between above and below atmospheric pressure to obtain a pressure or vacuum reading, ie some form of fast operating check valve that can operate at 50 to 150Hz? There is no requirement to 'trap' the reading as in compression testers. The range of pressures for the above is +/- 1.4bar and for another measurement (pressure only) circa 1.1 bar but with momentary 4bar peak.
Any ideas anyone (TK!)?