Handheld Manometer Air and Gas Pressure Tester GR 189B Differential Dual Port Gauge 11 Selectable Units Large LCD Display with Backlight HVAC

High accuracy: The digital manometer use of low power sensing and measurement makes barometric pressure measurement faster and more accurate. Measuring range: ±30.00psi; Resolution: 0.01; Accuracy: ±0.3% FSO (at 25°C); Repeatability: ±0.25%; Linearity/Hysteresis: ±0.1% FSO of full scale; Limited maximum pressure: 30Psi 11 selectable units: Easily switch between Psi, kPa, Kgfcm2, ozin2, Bar, mbar, inHg, mmHg, inH2O, ftH2O and cmH2O to set your most frequently used units at will Dual port:Dual port digital manometer can test positive and negative pressure and measure differential pressure between two zones (P1-P2).Large LCD display with backlight for easy reading and data logging functions, with measurement of differential pressure, positive and negative pressure, large LCD backlight, auto power off function, max/min logging function, data saving function Application: Made of durable, high temperature and impact resistant ABS material, including hoses and metal fittings, for gas appliances, HVAC, piping, pneumatic applications, field work and mobile pressure measurement Portable and Service: Digital manometer weight only 134g / 0.30lb. Size:160 * 62 * 31mm / 6.3 * 2.4* 1.3in. This size and weight can be carried with you.It is an ideal tool for electrical measurement. If you encounter any problems during use, please contact us in time