When carrying out maintenance or installation work on refrigeration systems and heat pumps, are you increasingly noticing that the use of analog manifolds is laborious and time-consuming? If so, the testo 549, our entry-level digital manifold, is the perfect choice for you. This 2-way manifold can be used for 60 refrigerants and offers practical solutions for your everyday work:

• Two temperature-compensated pressure sensors ensure fast, precise measurement of high and low pressure, and automatic calculation of the evaporating and condensing temperature
• Two connections for external temperature probes: with temperature probes attached (optional), the digital manifold can calculate superheating and subcooling simultaneously and in real time. This means you can do away with manual comparisons, which are prone to error, and obtain fast, accurate results
• Leakage test of refrigeration systems: the manifold can carry out a temperature-compensated leakage test of the system for rough tightness testing. For this, the initial system pressure is compared with the system pressure at the end of the measurement, so that the difference (if there is one) can be displayed immediately
• Can be used for standard refrigerants: the 60 most common refrigerants are stored in the instrument as standard

TESTO 549 Entry level digital manifold specifications:

Temperature :

• Measuring range : -50 to +150 °C
• Accuracy : ±0.5 °C
• Resolution : 0.1 °C
• Probe connection : 2 x plug-in (NTC)

Pressure measurement :

• Measuring range : -1 to +60 bar
• Accuracy : ±0.5 % fs
• Resolution : 0.01 bar
• Probe connection : 3 x 7/16″ – UNF
• Overload rel. (high pressure) : 65 bar

Vacuum measurement :

• Measuring range : -1 to 0 bar