HP-189B Digital Manometer, ±30psi/±206.8kPa Dual Port Gas Pressure Tester, LCD Backlight, 11 Units for HVAC & Gas Furnaces

✅【Dual Port Manometer】The HVAC manometer gauge HP-189B is designed to measure differential, positive, and negative pressure ±30 psi / ±206.8 kpa with ±0.3%FS precision. It offers 11 selectable measurement units, including inH2O, psi, bar, mbar, kPa, inHg, mmHg, ozin², ftH2O, cmH2O, and kg/cm² suits various applications.

✅【Easy Hose Connection】With a simple hose connection apparatus, Equipped with two tube connector(3.18mm diameter), one for checking positive pressure, another for testing negative pressure and use these two port together to get the air pressure difference easily. The gas pressure gauge AI-189B is ideal for ventilation and air conditioning systems, on-site verifications, and troubleshooting any gas pressure system issues.

✅【Data Storage & Zero-out】Press"REC" button to record and review max / min / average air pressure data; Short-press "HOLD” button to freeze measurement data and Long-press 5 seconds to clear out remaining data to ensure measure accuracy. Over-range Indicator to remind you timely.

✅【Handheld Gas Pressure Reader】134g portable gas valve pressure tester with 160*62*31mm compact design. Large backlit LCD screen display air pressure reading clearly even in dim light. A ideal gas pressure measurement tool for ventilation and air conditioning systems, on-site verifications, and troubleshooting any gas pressure system issues.

✅【Accessories & Warranty】The HVAC manometro HP-189B comes with 4pcs flexible tube, 1pcs 1/8” thread adapter (3.18mm) quick-connect fitting makes pressure connections a breeze, portable case and 365 days quality warranty.

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