testo 550s
www.testo.com
Data sheet
All results at a glance thanks to the large graphic display
Exceptionally compact and reliable thanks to the
easy-to-handle, robust housing with IP 54 protection class
Simple, wireless measurement of vacuum and temperature
via automatic Bluetooth connection
Even greater flexibility for your measurements and
documentation with the testo Smart App
Even easier to get results, thanks to guided measurement
menus for target superheat, vacuum and pressure loss
Convenient refrigerant management in the App with
favourites and automatic updates
Can be used for applications with A2L refrigerant,
taking into account the relevant legislation, norms and
guidelines for refrigeration systems
testo 550s – the manifold with
Bluetooth and 2-way valve block
for commissioning, servicing
and maintenance of refrigeration
systems and heat pumps
bar
psi
°C/°F
hPa
The testo 550s digital manifold with 2-way valve block
enables you to carry out your measurements on refrigeration
and air conditioning systems and heat pumps particularly
fast. The large display also helps you to evaluate the results
in graphic form. Stored programs guide you through the
measurement and enable the automatic determination of
numerous important system parameters such as superheat,
pressure drop test or evacuation.
Bluetooth probes for temperature, pressure and humidity
can be easily connected directly to the instrument and
offer maximum flexibility in their application. In conjunction
with the testo Smart App, you can take care of digital
documentation directly on site. In addition to this, you
always have the current refrigerants available to you, and
can set your favourites and transfer them to the instrument.
Its proven quality and great durability guarantee the
continuously high performance of your manifold in all
conditions.
micron
kPa
MPa
inch Hg
Digital manifold
Bluetooth 5.0
+ App
testo Smart App
for free download
testo 550s
testo 550s kits
testo 550s Basic Kit
Smart digital manifold with
fixed cable temperature
probes
testo550s Smart Kit
Smart digital manifold with
wireless temperature probes
testo550s Smart Kit with
filling hoses
Smart digital manifold with
wireless temperature probes
and hose filling set (3 pcs.)
Order no. 0564 5501 0564 5502 0564 5503
Kit components
testo550s
Smart digital manifold
Calibration protocol
Clamp temperature probe kit
testo115i
Wireless clamp temperature
probe (Smart Probe)
2 x 2 x
Hose filling set (3 hoses)
Instrument case
Technical data/accessories/kits
General technical data
Operating temperature -20 to +50°C
Storage temperature -20 to +60°C
Battery type 4 AA microcells
Battery life 250 h with no illumination, no Bluetooth
®
100 h with illumination and Bluetooth
®
Auto power off After 10 minutes when not connected via
Bluetooth
Dimensions 210 x 121 x 60mm
Weight 826 g
Protection class IP54
Bluetooth technology/
range
Bluetooth
®
5.0/150 m
Compatibility requires iOS 11.0 or newer/Android 6.0 or
newer
requires mobile terminal device with
Bluetooth
®
4.0
Sensor types
Pressure Temperature
Measuring range -1 to 60 bar -50 to +150°C
Accuracy
(at 22°C)
±0.5% fs ±0.5°C
Resolution 0.01bar 0.1°C
Probe connections 3 x 7/16" – UNF 2 x plug-in (NTC)
Overload 65bar –
Measuring instrument accessories Order no.
Magnetic belt for digital manifolds for
flexible use of the magnet or hook thanks
to a simple exchange system, compatible
with all digital manifolds from Testo
0564 1001
Valve spare parts kit; exchange of 2 valve
positioners with 4 valve positioner covers
(red, blue and 2 x black), compatible with
all digital manifolds from Testo.
0554 5570
The testo Smart App
• For all applications of the testo 550s – from
measurement to documentation
• Compatible with all Bluetooth-enabled Testo
measuring instruments for air conditioning/
refrigeration systems and heat pumps
• Measurement errors are easily prevented
thanks to menus that offer optimum support,
e.g. for superheating and subcooling
• Quick analysis thanks to clear presentation of
the values, e.g. in a table
• Create digital measurement reports including
photos as PDF/CSV files on site and email
them straight away