YUANRI Digital Vacuum Gauge Pro

Beyond industrial-grade precision vacuum measurement, the digital vacuum gauge also features two professional diagnostic modes: Smart Evacuation Mode monitors the evacuation process, and Pressure Leak Detection Mode checks sealed systems for leaks — giving you a more professional, in-depth, and convenient way to stay on top of vacuum conditions.
2.【Evacuation Mode】 - In evacuation mode, our hvac vacuum gauge displays the vacuum level along with key parameters: temperature difference, water vapor saturation temperature, and measurement time. Monitoring these values ensures that air and non-condensable gases are completely purged. More importantly, this data confirms that damaging moisture has been thoroughly eliminated — preventing ice blockages, corrosion, and lubricant breakdown. That’s how you ensure long-term system reliability.
3.【Pressure Leak Test Mode】 - In Pressure Leak Test mode, our hvac vacuum meter shows more than just the vacuum level — it also displays the pressure differential (ΔP), the initial pressure (StartP), and the test duration (TIME). The ΔP reading (P_end minus P_start) gives you an instant, clear indication of whether the system is leaking, making it an efficient and easy-to-use solution for verifying the seal integrity of static systems.
4.【± 0.2% FS HIGH PRECISION】 - Equipped with a high-precision sensor, this digital vacuum gauge easily meets lab-grade standards. Vacuum accuracy is ±0.2% of full scale, with a vacuum range (relative) of 0 to 50 mbar. Temperature accuracy is ±0.5°C (±0.9°F / ±0.5 K). Four selectable units are available — Torr, mbar, hPa, and inHg — and vacuum resolution is as fine as 0.01 hPa, 0.01 mbar, 0.01 Torr, or 0.001 inHg.
5.【Vacuum Pressure Alerts & 3" LCD Display】 - Our digital vacuum gauge lets you set a vacuum pressure alarm threshold. As the measured pressure approaches this value, the screen flashes; once it reaches or exceeds the setpoint, an audible alarm sounds. The micron gauge hvac features a 3-inch LCD screen with an adjustable backlight, delivering a clear, easy-to-read view even in direct sunlight.
6.【Auto Temp Compensation & Calibration】 - Our vacuum gauge uses a built-in temperature sensor and microprocessor to automatically compensate for ambient temperature fluctuations, delivering accurate readings in any environment. It also self-calibrates to different altitudes, so there's no need for manual recalibration.

Please review all photos carefully as they are considered part of the description. Item may not include all accessories or components shown in stock or manufacturer photos. Unless otherwise stated, items may not have been tested for full functionality. Items may have minor cosmetic scuffs, fingerprints, or dust from inspection and handling. If you'd like to verify any specifics about this item or have any questions, please reach out before purchasing we're happy to help

YUANRI Digital Vacuum Gauge Pro

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