This model has been discontinued. We suggest the replacement product testo 549.
testo 550-1 - this model has been discontinued
Order-Nr. 0563 5505
Product Description
This model has been discontinued.
| 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 |
50 bar |
Accuracy |
±0.75 % fs |
Resolution |
0.01 bar / 0.1 psi |
Probe connection |
3 x 7/16"-UNF |
Overload rel. (low pressure) |
60 bar |
Overload rel. (high pressure) |
60 bar |
Low pressure rel. |
50 bar |
High pressure rel. |
50 bar |
| Vacuum measurement | |
|---|---|
Measuring range |
-1 to 0 bar |
| General technical data | |
|---|---|
Dimensions |
200 x 113 x 62 mm |
Operating temperature |
-10 to +50 °C |
Battery life |
approx. 150h (without illumination) |
Pressure media |
N; H₂O; CO₂ (sub-critical); CFC; HFC |
Refrigerants in instrument |
R12; R22; R123; R134a; R290; R401A; R401B; R402A; R402B; R404A; R406A; R407A; R407C; R408A; R409A; R410A; Ra11A; R413A; R414B; R416A; R417A; R420A; R421A; R421B; R422A; R422B; R422D; R424A; R427A; R434A; R437A; R438A; R502; R503; R507; R600; R600a; R744 (only in the permitted measurement range up to 50 bar); R1234yf; update by Testo Service |
Storage temperature |
-20 to +60 °C |
Weight |
1060 g |
Simultaneous determination of superheating and subcooling
The testo 550 automatically calculates superheating and subcooling of the system using up to 2 temperature probes which can be connected at the same time. This means manual calculations with a separate refrigerant slide are no longer needed.
Refrigerant flexibility
The 39 most common refrigerants are stored in the instrument as standard. If you cannot find the refrigerant you need, please contact our service department. They will load additional refrigerants on your testo 550 free of charge.
Tightness testing of refrigeration systems
The testo 550 can carry out a temperature-compensated leakage test of the system for rough tightness testing. To do this, the system pressure at the start of the measurement is compared with the one at the end and any difference there may be is displayed directly.
