Name	Description	Category
Testo 521 Series Pressure Meters	Temperature-compensated differential pressure sensor in instrument Additional 2 probe inputs for connection of further Pressure and Temperature measurement probes Direct calculation of flow velocity and volume flow Direct zeroing of display value from pressure probes Display of Hold-, max. and min. values Easy data storage by measurement site as well as analysis, archiving and documentation via optional PC software Available in 2 accuracy classes: Testo 521-1: accuracy 0.2 % of final value Testo 521-2: accuracy 0.1 % of final value	Pressure Meters
Testo 526 Series Pressure Meters	Temperature-compensated differential pressure sensor 0 to 2000 hPa in instrument Additional 2 probe inputs for the connection of further probes for the measurement of pressure and temperature Leakage rate measurement (pressure drop per time) Direct zeroing of display value from pressure probes Display of Hold-, max. and min. values Easy data storage by measurement site as well as analysis, archiving and documentation via optional PC software Testing of pressure drop in containers, pipelines etc. Available in 2 accuracy classes: Testo 526-1: accuracy 0.1 % of final value Testo 526-2: accuracy 0.05 % of final value	Pressure Meters
Testo 550 RSA kit (0563 5505) Digital Manifold for Refrigeration Systems	The Testo 550 RSA is ideal for servicing, maintaining and commissioning, refrigeration and heat pump systems including the newest 16 SEER systems. Compact design, hardened housing and extremely convenient operation for ease-of-use, transport and setup Measurement of low and high pressure as well as calculation of temperatures, fast and accurate Simultaneous calculation of superheat and subcooling in real time with probes 39 refrigerant profiles built in for automatic PT calculations Includes: 550, (1) Clamp Probe, Batteries, and Calibration Protocol Deluxe Kit Available (Includes 2 Probes and Carrying Case) See: Testo 550 RSA Deluxe Kit	Refrigeration Manifolds
Testo 550 RSA Deluxe Kit (0563 5506) Digital Manifold Deluxe Kit for Refrigeration Systems	The Testo 550 is ideal for servicing, maintaining and commissioning, refrigeration and heat pump systems including the newest 16 SEER systems Compact design, hardened housing and extremely convenient operation for ease-of-use, transport and setup Measurement of low and high pressure as well as calculation of temperatures, fast and accurate Simultaneous calculation Of superheating and subcooling in real time with 2 probes 39 refrigerant profiles built in for automatic PT calculations Includes: 550, (2) Clamp Probes, Batteries, Hard Carry Case	Refrigeration Manifolds
Testo 557 (0563 5572) Refrigeration System Analyzer	Four-way valve block for fast and efficient servicing Integrated vacuum measurement supports evacuation of the system Two temperature probe inputs for simultaneous real-time calculation of superheat and subcooling. The 557 will also perform leak tests on AC/R systems with temperature compensation, insuring accurate results.	Refrigeration Manifolds
Testo 570 (0563 5703) 4 Valve Digital Manifold w/ Vacuum	The Testo 570 RSA is ideal for servicing, maintaining and commissioning, refrigeration and heat pump systems including the newest 16 SEER systems. Built-in vacuum sensor 4-way valve block 3 Temperature probe inputs Datalogging capacity of up to 10,000 measurements Compact design, hardened housing and extremely convenient operation for ease-of-use, transport and setup Measurement of low and high pressure as well as calculation of temperatures, fast and accurate Simultaneous calculation of superheat and subcooling in real time with 2 probes 40 refrigerant profiles built in for automatic PT calculations Optional printer for on-site documentation	Refrigeration Manifolds
Testo 308 (0632 0308) Smoke Tester for Soot Count with Rechargeable Battery	Easy, self-explanatory menu Clear segment display Back-lit display IR printout Integrated condensate trap Integrated dirt filter (interchangeable) Additional soot filter measurement as possibility of proof Li-ion battery (2600 mA, 45 individual measurements) can be charged inside or outside the instrument Battery and charger from Testo 327 and Testo 330 can be used with Testo 308 Bluetooth interface (optional)* Easy exchange of soot filter rolls Spare battery can be charged either separately or in instrument Protection class IP40	Smoke and Soot Testers
Testo 308-BT (0632 0309) Digital Smoke Meter with Bluetooth Connectivity	Bluetooth Connectivity Easy, self-explanatory menu Clear segment display LED display illumination Easy IR printout Integrated condensate trap Measuring range: 0 to 6 RZ Range Accuracy: ±0.2 RZ Resolution: 0.1 RZ Res	Smoke and Soot Testers