ST-VG90 Digital Vacuum Meter | Micron Gauge | HVAC | Super Stars

Product details Product Description ST-VG90 Digital Vacuum Meter | Micron Gauge | HVAC | Super Stars The ST-VG90 Digital Vacuum Meter by Super Stars is a professional HVAC instrument designed for accurate vacuum measurement during system evacuation. It is essential for ensuring proper removal of moisture and air before refrigerant charging. This device features a high-precision vacuum sensor with a wide measurement range from 99,999 Pa down to 0.1 Pa (up to 740,000–0.75 microns), making it suitable for deep vacuum applications in refrigeration systems. Equipped with a clear digital display, multiple unit conversion, and one-key calibration, the ST-VG90 provides fast and reliable readings. It also includes a target vacuum alarm and leak detection function, helping technicians quickly identify system issues and ensure proper evacuation. Compact, lightweight, and battery-powered, it is ideal for both field and workshop use. Key Features Wide measurement range: 99,999 Pa → 0.1 Pa (micron level) High-precision Pirani sensor for accurate readings Multi-unit display: Pa, mBar, mmHg, Micron, InHg Digital LCD display with backlight Leak detection & vacuum monitoring Target vacuum alarm with buzzer One-key calibration function Auto shut-off for battery saving Compact and portable design Technical Specifications Specification Details Model ST-VG90 Brand Super Stars Tool Type Digital Vacuum Meter Measurement Range 99,999 Pa → 0.1 Pa Micron Range 740,000 → 0.75 micron Accuracy ±5% (at 20°C) Resolution 0.1 Pa (<10 Pa) Units Pa, mBar, mmHg, Micron, InHg Sensor Type Pirani sensor Power Supply 3 × AA batteries Operating Temperature -5°C to 50°C Interface 7/16″-20UNF (1/4″ SAE) Weight approx. 0.4 kg Applications HVAC system evacuation Refrigeration system vacuum testing Leak detection in vacuum systems Monitoring vacuum level before charging Workshop and field servicing Frequently Asked Questions (FAQs) Q1: What is ST-VG90 used for?It measures vacuum level during HVAC system evacuation. Q2: What is micron measurement?Micron is a unit used to measure deep vacuum levels in refrigeration systems. Q3: Does it support multiple units?Yes, it supports Pa, micron, mBar, mmHg, and more. Q4: Can it detect leaks?Yes, it has a vacuum monitoring and leak detection function. Q5: Is it portable?Yes, it is compact and battery-powered for field use. View More View Less