Digital Vacuum Gauge, HVAC Micron Vacuum Gauge Tester 0-75,000 Microns with Pirani Sensor, 1/4" SAE Interface, TFT Display, 9 Units, Temperature & Humidity Measurement

The VANLISON MOG2034 Digital Vacuum Gauge is more than just a micron reader — it’s a comprehensive diagnostic companion engineered for HVAC technicians, refrigeration professionals, and pump operators who demand precision, durability, and job-site practicality. At the heart of this instrument lies a high-sensitivity Pirani vacuum sensor, paired with a 32-bit digital processing core for stable, high-speed readings (0.5-second refresh cycle). It covers a wide vacuum range from 0 to 75,000 microns with adaptive resolution: 1 micron from 0–1,000, 10 microns from 1,000–2,000, and progressive resolution at higher ranges to balance accuracy and response speed. What sets the MOG2034 apart is its triple-parameter display — vacuum value, ambient humidity, and the calculated evaporation / boiling temperature of residual moisture under the current vacuum level. This feature is a game-changer for system dehydration: by monitoring the evaporation temperature, you can instantly verify whether moisture is actively boiling off, giving you real-time feedback on the effectiveness of your evacuation process before you introduce refrigerant. Durability is where this gauge truly shines. The sensor incorporates a burst-proof / anti-expansion design that withstands accidental over-pressure events up to 2 bar (relative) — a common hazard when connecting to pressurized systems or during pump startup. Operation is intuitive and hassle-free: load 3x AA batteries (included), long-press the power button, and toggle between 9 vacuum units (microns, mTorr, μmHg, Torr, mmHg, Pa, hPa, kPa, mbar, psia, inHg) and temperature scales (°C/°F) with a single tap. The 1/4" SAE (7/16"-20 UNF) male fitting ensures seamless connection to standard HVAC service ports, manifolds, and vacuum pumps. What's in the Box: VANLISON MOG2034 Digital Vacuum Gauge 3× AA Batteries User Manual Adapters

• PRECISE VACUUM MEASUREMENT FROM 0 TO 75,000 MICRONS — Powered by a built-in Pirani vacuum sensor and a 32-bit digital processing unit, this HVAC vacuum gauge delivers high-accuracy readings with a resolution as fine as 1 micron in the 0–1,000 micron range-. Whether you're evacuating a refrigeration system or verifying pump performance, you get reliable, real-time data you can trust.
• VACUUM + HUMIDITY + EVAPORATION TEMPERATURE —This gauge simultaneously displays the current vacuum level, ambient humidity (0–100% RH), and the boiling/evaporation temperature of moisture under the current vacuum. This gives you instant insight into how effectively your system is dehydrating — a critical factor for proper refrigerant charging.
• SMART COLOR-CHANGE THRESHOLD ALERT — Set your target vacuum level via the intuitive menu, and when the system pulls down to your preset value, the screen backlight instantly changes color — a vivid, unmistakable visual cue. The bright color alert works perfectly even in glaring sunlight, so you can focus on other tasks while the gauge signals readiness.
• BURST-PROOF SENSOR DESIGN FOR EXTENDED LONGEVITY —This gauge features a rugged over-pressure protected Pirani sensor with a maximum overload rating of 2 bar (relative) . This built-in anti-expansion / burst-proof engineering safeguards the sensing element from accidental atmospheric exposure or pressure surges, dramatically extending the service life of the gauge and giving you peace of mind in demanding field conditions.
• FIELD-READY, COMPACT & BATTERY-POWERED — Weighing just 190g (6.7 oz) and small enough to fit in your pocket (6.5 x 3.5 x 14.5 cm / 2.6 x 1.4 x 5.7 inches), this gauge is built for daily job-site use. The high-strength engineering plastic housing withstands drops and bumps, while the 3x AA battery system (included) with on-screen life indicator keeps you powered through long service calls.