Testo 549 Digital Manifold Gauge for HVAC Refrigerant Pressure
The Testo 549 Digital Manifold Gauge is a two‑valve digital refrigerant meter for HVAC and heat pumps that speeds up maintenance with fast, precise, temperature‑corrected readings. It replaces laborious analog manifolds by delivering real‑time data for better decisions on the job.
Two temperature‑compensated pressure sensors deliver quick, accurate measurements of high and low pressure and automatically calculate evaporating and condensing temperatures. With two connections for external temperature probes, you can compute superheating and subcooling in real time. It also supports a temperature‑compensated leakage test to quickly confirm system tightness, comparing initial and end pressures. It stores 60 common refrigerants and offers an automatic heat pump mode for seamless hose switching. The robust metal valve block with three connections and three hose holders, together with IP42 protection and an illuminated display, makes measurements easy even in challenging environments. A suspension hook keeps the instrument secure during use.
All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.
Benefits & Tips
- Use the 2‑sensor setup for fast, accurate high/low pressure readings and immediate evaporating/condensing temperatures.
- Attach external temperature probes to calculate superheating and subcooling in real time, reducing manual comparisons.
- Perform a temperature‑compensated leakage test to quickly assess system tightness and detect leaks.
Product specifications
- Model: testo 549 digital refrigerant meter
- Measuring temperature range: -50 to +150 °C • Accuracy: ±0.5 °C • Resolution: 0.1 °C
- Probe connections: 2 x plug‑in (NTC)
- Measuring pressure range: -1 to 60 bar • Accuracy: ±0.5% of full scale • Resolution: 0.01 bar
- Probe connections: 3 x 7/16" – UNF
- Overload relative pressure (high pressure): 65 bar
- Dimensions: 200 x 109 x 63 mm
- Operating temperature: -20 to +50 °C • Protection class: IP42
- Refrigerants in instrument: R114; R12; R123; R1233zd; R1234yf; R1234ze; R124; R125; R13; R134a; R22; R23; R290; R32; R401A; R401B; R402A; R402B; R404A; R407C; R407F; R407H; R408A; R409A; R410A; R414B; R416A; R420A; R421A; R421B; R422B; R422C; R422D; R424A; R427A; R434A; R437A; R438A; R442A; R444B; R448A; R449A; R450A; R452A; R452B; R453a; R454A; R454B; R454C; R455A; R458A; R500; R502; R503; R507; R513A; R600a; R718 (H2O); R744 (CO2) and many more (60 refrigerants stored as standard)
- Includes: 1 x 549 Digital Manifold
Package includes:
- 1 x Testo 549 Digital Manifold
Warnings / reminders
- Refrigerants in instrument: 60 most common refrigerants stored in the instrument as standard.
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