Mastercool 98063-BT Digital Bluetooth Vacuum Gauge for HVAC Evacuation

Mastercool 98063-BT Digital Vacuum Gauge with Bluetooth® Wireless Technology

The Mastercool 98063-BT combines a state-of-the-art glass bead thermistor sensor with Bluetooth® wireless technology, giving HVAC/R technicians accurate, real-time vacuum readings on their smartphone or tablet via the free Mastercool Connect app (iOS & Android). Monitor your evacuation from up to 80 metres away — no need to crouch next to the pump.

Key Features

• Glass Bead Thermistor Sensor — with temperature compensation for accurate readings across operating conditions
• 5-Digit LCD with Ultra-Vibrant Blue Backlight — clear readability in all lighting conditions; backlight auto-off after 3 minutes
• Bluetooth® 4.2 and 5 — 260' (80m) maximum line-of-sight wireless range; pairs with the Mastercool Connect app
• Vacuum Level Target Alarm — audio and visual alert when vacuum drops below a user-adjustable set point
• Multiple Vacuum Units — display in Micron, Torr, mTorr, mmHg, mBar or Pa
• Sintered Bronze Inlet Filter — protects the sensor from contamination
• Chemical Resistant Sensor — easy to clean; field-serviceable gasket and depressor
• Field Calibration — two-point calibration (atmospheric + deep vacuum) can be performed on site
• Auto-Off — powers down after 10 minutes at atmospheric pressure; stays on during active evacuation or when Bluetooth is connected
• Low Battery Indicator — LCD icon alerts when batteries need replacing

Technical Specifications

• Sensor: Glass bead thermistor with temperature compensation
• Connection Fitting: 1/4" SAE F-FL with stem depressor
• Operating Temperature: 32 to 120°F (0 to 45°C)
• Vacuum Range: 20,000 to 1 micron
• Accuracy: ±10% of reading (from 10,000 to 100 microns)
• Proof Pressure: 450 psi
• Power: 2 x AA batteries (included)
• Battery Life: 100+ continuous hours (depending on backlight use)
• Weight: 0.13 kg without batteries / 0.23 kg with batteries
• Dimensions: 50 mm x 160 mm x 36 mm
• Bluetooth Range: 260' (80m) line-of-sight
• Bluetooth Version: 4.2 and 5
• Country of Origin: USA

Replaceable Parts

• 42010 — Replacement gasket for 1/4" fitting
• 42014 — Replacement depressor for 1/4" fitting
• 99333 — 1/4 FL-M x 1/4 FL-M x 1/4 FL-F tee (optional accessory)

Mastercool Connect App

Download the free Mastercool Connect app from the App Store or Google Play. Once paired, the app displays live vacuum readings, allows alarm set points to be configured, and logs evacuation data. The gauge is listed as VGMastercool-xxx in the app's device search.

Important Notes

• Isolate the vacuum gauge from the pump before turning the pump off — pump oil can be drawn into the sensor if the pump is stopped while the gauge is connected
• Clean the sensor gasket after each vacuum using acetone if oil contamination is suspected
• Allow 15 minutes at constant temperature before calibrating for best accuracy
• Above 20,000 microns, dashes will be displayed on the LCD

Also Available as Part of a Kit

• Mastercool Vacuum & Commissioning Kit — with 90066 vacuum pump, pump oil & core tool (save vs buying separately)