Greisinger gmh 3151 barometer pressure gauge greisinger gmh 3151 p the greisinger gmh 3151 is a hand held barometer with data logger used for taking pressure measurements sensors up to 1000 bar available the gmh 3151 uses pressure sensors that are are calibrated and fully interchangeable useful functions such as data logger analogue output tare hold function min max memory and a serial interface p p the barometer is suitable for almost every requirement in pneumatics hydraulics