Universal industrial pressure gauge 63 mm with rear connection for installation FM 633, manufactured according to standard EN 837-1 in a stainless steel housing with glycerin filling. The pressure gauge is resistant to shocks, vibrations, humidity, with increased resistance to sudden pressure spikes, intended for simple measurements of low-viscosity liquids, vapors, and gases that do not corrode copper alloys and do not crystallize. The glycerin filling of the gauge helps reduce pointer fluctuations and minimizes wear on moving parts of the mechanism during pressure pulsations and vibrations. Additionally, it prevents condensation and the formation of a corrosive atmosphere inside the pressure gauge, which could damage internal components. The measurement range should be selected according to the working pressure, so that the constant or slowly changing pressure does not exceed 75% of the range; the pulsating pressure does not exceed 60% of the range, and pressure impulses do not exceed the maximum range. Dial diameter: 63 mm. Material: housing – AISI 304 steel, window – plexiglass, connection – brass, mechanism – brass and copper alloys, filling – glycerin. Accuracy class: 1.6. Ambient temperature: from -40°C to +65°C. Medium temperature: maximum +60°C. Rear connection: GZ 1/4″ BSP (G 1/4 B, EN ISO 228-1, B indicates thread tolerance).