From the manufacturer
Testo was founded in Lenzkirch, in the Black Forest region of Germany, in 1957 and has since designed, developed, and manufactured portable test and measurement instrumentation and solutions. Backed by 60 years of measuring engineering experience, testo’s mission is to provide the highest quality, service, and value in the industry.
Testo’s first product manufactured was a simple electronic thermometer. Today, the product line has expanded to include a large variety of temperature measuring instruments, such as data loggers, air velocity meters, humidity and dew point meters, refrigeration service analyzers, multifunction instruments, stack gas analyzers and air emission monitors, water analyzers, tachometers, sound, pressure, and light meters, and thermal imagers.
Instantly and accurately perform your testing and servicing with the testo 550 digital manifold
The testo 550 precisely displays superheat and subcooling instantly for up to 60 refrigerants and is versatile enough to become the tool for every job. It also measures high / low side pressures and temperatures. With its free Bluetooth linked app, the testo 550 opens up new possibilities for efficient analysis and documentation.
- Automatic superheat and subcooling calculations
- 2-way valve block with three connections
- Stores 60 refrigerant profiles in the instrument with free updates via the testo Refrigeration App
- Measures high side / low side pressures and temperatures
- Displays saturation and evaporation temperatures
- Bluetooth / app integration for monitoring, report generation, and sending reports and invoices via email
The handy suspension hook assures a secure attachment of the digital manifold for care-free and hands-free analysis.
2-way valve block
The 2-way valve block with three connections for convenient servicing.
The rugged housing includes a metal frame to protect the digital manifold from impacts and ensures years of dependable service.
Your testo 550 digital manifold kit includes two temperature clamp probes (two channel NTC temperature inputs), 3 hoses, batteries, service case and owner’s manual.
testo Refrigeration App
Review measurement data via Bluetooth on your Smartphone or Tablet with the testo Refrigeration App. Quickly and conveniently document your job, finalize your report and send it out via email – directly from the job site.
- Wireless display of measurement values simultaneous to instrument display
- Upload new refrigerants directly into your manifold
- Automatic calculation and display of measurements in easy-to-read formats
- Generate lists, trending graphs and tables
- Generate reports at the push of a button, include photos and then send via email
|Analog||testo 549||testo 550||testo 557||testo 570|
|Identical pressure measuring range HP/LP||✘||Up to 60 bar||Up to 60 bar||Up to 60 bar||Up to 50 bar|
|Pressure measurement accuracy||> 1 % of f.v.||> 0.5 % of f.v.||> 0.5 % of f.v.||> 0.5 % of f.v.||> 0.5 % of f.v.|
|Integrated temperature measurement||✘||✔ (Up to 2 temperature probes)`||✔ (Up to 2 temperature probes)||✔ (Up to 2 temperature probes)||✔ (Up to 3 temperature probes)|
|Four-way valve manifold||Product-dependent||✘||✘||✓||✓|
|Internal memory, documentation||✘||✘||With the App||With the App||✓|
|Refrigerants stored (update possible)||max. 4 ( ✘ )||60 (via testo service)||60 (Possible on site via App)||60 (Possible on site via App)||40 (Via testo EasyKool software)|
|Automatic ambient pressure measurement||✘||✘||✘||✓||✓|
|Heat pump mode||✘||✓||✓||✓||✓|
|Temperature-compensated leakage testing||✘||✓||✓||✓||✓|
|Vacuum measurement||✘||Indication||Indication||Highly precise, with external probe||Accurate and robust|