Testo 552 Digital Vacuum Micron Gauge Bluetooth HVAC 0560 5522 Pirani Sensor New For Sale

SHEVAPRIME · HVAC & Test Equipment · Automotive Tools · Hand Tools · Fast US Shipping TESTO 552 Digital Vacuum / Micron Gauge with Bluetooth® | 0560 5522 Model: 552 | 1 Micron Resolution | 0–20,000 Micron | Bluetooth | Condition: New Know when the system is actually dry — not when you hope it is. The testo 552 measures deep vacuum down to 1 micron resolution and calculates the saturation temperature of water in real time, so it tells you the moment moisture has genuinely left the system. Set an alarm threshold, walk away, and let your phone notify you when the target is hit. Why You'll Like It ✔1 micron resolution across a 0–20,000 micron range — real deep-vacuum measurement, not a rough indication ✔Real-time H₂O saturation temperature — the gauge tells you when moisture has actually been removed, instead of leaving you to guess ✔Maintenance-free sensor — unlike competing gauges, it requires no cleaning and isn't thrown off by oil contamination ✔Adjustable alarm threshold — set the micron target your manufacturer specifies and get notified when it's reached ✔Bluetooth to the free testo Smart Probes App — monitor live from your phone, log data, generate reports and email them from the job ✔Backlit display with visual alarm — readable in a dark mechanical room or crawl space ✔Six selectable units — micron, Torr, mbar, hPa, inH₂O, inHg ✔Dual 7/16" UNF connections — plumb it inline exactly where you need it ✔Pairs with the testo 570 digital manifold for combined data logging via EasyKool software (sold separately) ✔50 hours of battery life on two AA cells (without Bluetooth and backlight) Specifications Brand / Model Testo 552 Order Number 0560 5522 Sensor Type Absolute pressure (Pirani), maintenance-free Measuring Range 0 – 20,000 microns (0 – 26.66 mbar) Accuracy ±10 microns + 10% of m.v. (100–1,000 microns) Resolution 1 micron (0–1,000); 10 (1,000–2,000); 100 (2,000–5,000); 500 (5,000–10,000) Display Units Micron, Torr, mbar, hPa, inH₂O, inHg Connections 2 × 7/16" UNF Interface Bluetooth 4.0 Overload 87 psi absolute / 72 psi relative Battery / Life 2 × AA / up to 50 hours Protection Class IP42 Operating Temperature 14 – 122 °F (-10 – +50 °C) App Requirements iOS 8.3+ or Android 4.3+, Bluetooth 4.0 Frequently Asked Questions Q: Is this the 552 or the 552i? They look similar in search results. A: This is the testo 552 (0560 5522) — it has its own backlit display and works standalone, with Bluetooth as an addition. The 552i is a different product: a wireless probe with no screen that only works through the app or a compatible manifold. If you want a gauge you can read directly on the equipment, this is the one. Q: Does the sensor need cleaning like other micron gauges? A: No — and that's a genuine differentiator. Many vacuum gauges use a sensor that fouls with oil and starts reading false low, requiring regular cleaning. The testo 552's sensor is maintenance-free and unaffected by contamination, so you're not second-guessing your readings after a few messy jobs. Q: What does the saturation temperature reading actually do for me? A: It answers the real question. A micron reading alone tells you pressure; the H₂O saturation temperature tells you whether water is still boiling out of the system at that pressure and ambient temperature. That's how you know evacuation is genuinely complete rather than just numerically low. Q: Do I need the app to use it? A: No. The gauge is fully functional on its own with its backlit display and alarm. The free testo Smart Probes App adds remote monitoring, data logging, report generation and emailing — useful, but optional. Q: How do I set the alarm? A: Set your target micron level in the instrument. Many equipment manufacturers specify both a micron figure and a hold time for evacuation; the adjustable threshold lets you match their spec exactly and get alerted when it's met, so you're not standing there watching a display. Q: How does it connect to my system? A: Two 7/16" UNF connections, standard for HVAC service. Connect it as close to the system as practical for accurate readings — putting a micron gauge at the far end of a long hose run gives you the pressure at the pump, not in the system. Q: Are batteries included? A: The unit runs on two AA batteries and delivers up to 50 hours of runtime without Bluetooth and backlight active. Check the packaging contents on arrival — if you plan to use it immediately, having a spare pair on hand is never a bad idea. Condition Brand New in original Testo packaging. 100% genuine Testo product. 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