Digital manifold refrigeration systems and heat Calculation of superheating/subcooling in real time with up to two external temperature probes 2-way valve block with three connections, three hose holders and sight glass The 39 most common refrigerants are stored in the Display illumination for better legibility in dark surroundings Automatic heat pump mode Temperature-compensated tightness test testo 550 is the robust tool for daily use on refrigeration systems and heat pumps. The robust 2-way metal valve block with 3 connections and 3 hose holders allows fast The solid housing reliably protects the testo 550 from knocks. During measurement, the suspension hook guarantees secure attachment of the digital manifold. The vacuum display informs of the vacuum reached during evacuation. This makes the testo 550 excellent for service, maintenance and commissioning tasks. Thanks to further instrument functions such as the automatic heat pump mode, which makes switching over the refrigerant hoses superfluous, and the temperature- compensated tightness test function, work on refrigeration systems and heat pumps is easier than ever.

Technical data / Accessories General technical data testo 550-1 set digital manifold for service and maintenance on refrigeration systems, 1 clamp probe for measuring on pipes, calibration testo 550-2 set digital manifold, 2 clamp probes for measuring on pipes, transport case, calibration protocol and batteries Oper. temp. Storage temp. Battery life Pressure media Approx. 150h (without Illumination) R744 (only In the permitted measurement Sensor types Accessories for measuring instrument

Probe type Probe shaft/probe shaft tip Efficient, robust NTC air probe Surface probes The suspension hook guarantees secure attachment of the digital manifold during measurement. Clamp probe for pipes from 0 6 Large, backlit display

Subject to change without notice. 0981 9214/msp/A/03.2011 testo 550 We measure it. www.testo.com