Mastercool DG-800 — Digital High-Pressure Gauge

Professional digital high-pressure gauge with blue backlit LCD display and 91 pre-programmed refrigerants. Provides accurate pressure readings in multiple units (MPa, kPa, bar, psi, kg/cm², inHg) with ±0.5% accuracy. Perfect for upgrading analogue manifold sets or as a standalone diagnostic tool.

Key Features:

• 91 Refrigerants Pre-Programmed – Including R32, R410A, R454B, R290, R1234yf, R134a, R22, R404A, R407C, and many more
• Blue Backlit LCD Display – Easy-to-read digital screen with automatic backlight
• Multiple Pressure Units – MPa, kPa, bar, psi, kg/cm², inHg
• High Accuracy – ±0.5% full-scale accuracy
• Wide Pressure Range – -14.5 to 800 psi (-1 to 55 bar)
• Temperature Display – Shows saturation temperature for selected refrigerant
• High-Pressure Side – Designed for high-side pressure measurement
• Standard 1/8" NPT Connection – Fits all Mastercool manifolds
• Battery Powered – Long-life battery operation

Specifications:

• Model: DG-800
• Type: Digital high-pressure gauge
• Refrigerants: 91 pre-programmed
• Display: Blue backlit LCD
• Pressure range: -14.5 to 800 psi (-1 to 55 bar)
• Accuracy: ±0.5% full scale
• Units: MPa, kPa, bar, psi, kg/cm², inHg
• Connection: 1/8" NPT
• Power: Battery (included)
• Weight: 10 kg (shipping weight)
• SKU: DG-800
• Barcode: 700376132021

Matching Gauge:

• DG-500 — Digital Low-Pressure Gauge – Matching LP gauge for complete digital gauge set

Digital Manifold Alternatives:

For a complete digital manifold solution with integrated gauges, consider:

• 94103 — Black Series Mini-Fold Digital Manifold (manifold only)
• 94661 — Black Series Mini-Fold Digital Manifold with Hoses
• 94261 — Black Series Mini-Fold Digital Manifold with Ball Valve Hoses
• 94261-JT — Black Series Mini-Fold Digital Manifold with In-Line Ball Valve Hoses (5/16")

Applications:

• Upgrading analogue manifold sets to digital
• Replacement for damaged or inaccurate analogue gauges
• Standalone pressure diagnostic tool
• R410A and R32 high-pressure systems
• Multi-refrigerant service work
• Precise pressure measurement for charging
• System diagnostics and troubleshooting

Benefits of Digital Gauges:

• Eliminates Reading Errors – No parallax or interpretation issues
• Multi-Refrigerant – One gauge for 91 different refrigerants
• Automatic Temperature – Calculates saturation temperature instantly
• Multiple Units – Switch between pressure units with one button
• Better Accuracy – ±0.5% vs typical ±2% for analogue gauges
• Easier to Read – Large digital display vs small analogue scales

Installation:

Simply unscrew your existing analogue gauge from the manifold body and replace with this digital gauge. Standard 1/8" NPT thread fits all Mastercool brass and aluminium manifolds. No special tools required.

Battery Life:

The DG-800 features automatic power-off to conserve battery life. Typical battery life is 6-12 months depending on usage. Battery replacement is simple and uses standard AAA batteries.

Maintenance:

• Keep display clean and free from debris
• Store in protective case when not in use
• Replace battery when low battery indicator appears
• Avoid dropping or impact damage to digital components
• Calibrate annually for maximum accuracy

Professional Quality: Mastercool digital gauges are manufactured to professional standards with ±0.5% accuracy for demanding HVAC/R diagnostic and service applications.