The testo 552 digital micron gauge is ideal for monitoring the evacuation of air conditioning, refrigeration, and heat pump systems. It is rich in features that make your work faster, easier, and more accurate.

• Control and read complete measurement via smartphone
• Extremely precise, extremely rugged, extremely practical – with visual alarm and backlit display
• App for creating on-site reports
• Sending measurement protocols by e-mail
• High-precision measuring technology
• Extremely robust

• Absolute Pressure

  Measuring range	0 to 0.39 psi / / 0 to 26.66 mbar / 0 to 20000 micron
  Accuracy	±(10 micron + 10 % of mv) (100 to 1000 micron)
  Resolution	100 micron (2000 to 5000 micron) / 1 micron (0 to 1000 micron) / 10 micron (1000 to 2000 micron) /
  Overload	absolute: 87.0 psi / 87 psi / absolute: 6.0 bar / 87 psi (relative: 72.5 psi / 72 psi) / (relative: 5.0 bar / 72 psi)

  General technical data

  Weight	18 oz. / 500 g
  Dimensions	6 x 4 x 2 in. / 160 x 110 x 50 mm
  Operating temperature	14.0° to 122.0 °F / -10 to +50 °C
  Protection class	IP42
  System requirements	requires iOS 11.0 or newer; requires Android 6.0 or newer; requires mobile end device with Bluetooth 4.0
  Product colour	black/orange
  Battery type	2 x AA
  Battery life	50 hrs (without Bluetooth/backlighting)
  Connection	2 x 7/16“ UNF
  Interface	Bluetooth® 4.0 wireless technology
  Parameter	mbar; micron; mmHg; Torr; inHg; inH20; hPa; Pa
  Measuring rate	0.5 sec
  Storage temperature	-4.0° to 122.0 °F / -20 to +50 °C

  Accessories

  Accessories

  • ACCESSORIES
    3 foot miniDIN connection cable. Designed to connect a testo 552 Digital Vacuum Gauge to testo 570 Digital Manifold, which will allow for a greater resolution vacuum readout on the testo 570. In addition, the cable will allow the 570 to print, as well as store measurements from the 552.MiniDIN connection cable
    Order no.:
    0554 5520