Product Description

Testo 550i Smart Kit App-controlled Digital Manifold with Wireless Clamp Temperature Probes (NTC)

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Refrigeration systems, air conditioning systems, heat pumps

Determination of high and low pressure, automatic determination of condensation and evaporation temperature and calculation of superheating/subcooling. All the results can be read simultaneously on one display (in conjunction with the appropriate Testo Smart Probes)
Tightness test: Recording and analysis of the pressure curve
Automatic calculation of the target superheat (in conjunction with the testo Smart App and the appropriate Testo Smart Probes, e.g. testo 115i and testo 605i)
Evacuation: Graphic progression display of the measurement with indication of the start and differential value (in conjunction with the appropriate Testo Smart Probe, e.g. testo 552i vacuum probe)

The kit for app-controlled, wireless measurements and digital documentation on your smartphone. You will get the testo 550i app-controlled digital manifold with Bluetooth, 2-way valve block and sturdy hook, two testo 115i wireless clamp thermometers (Bluetooth, NTC) and a robust transport case. For other wireless measurements, the optional Testo Smart Probes for temperature, humidity and vacuum are the perfect addition. You’ll be ideally equipped to carry out your measuring tasks on refrigeration and air conditioning systems and also heat pumps.

Delivery Scope

testo 550i digital 2-way manifold including batteries (3 x AAA) and calibration protocol
2 x testo 115i wireless Bluetooth clamp thermometers
Transport case
testo Smart App (free download)
Instruction manuals

Technical Data

testo 550i – App-controlled digital manifold with Bluetooth and 2-way valve block

Pressure measurement
Measuring range	-1 to 60 bar
Accuracy	±0.5 % fs
Resolution	0.01 bar
Probe connection	3 x 7/16″ – UNF
Overload rel. (high pressure)	65 bar

General technical data
Weight	595 g
Dimensions	77 x 109 x 63 mm
Operating temperature	-10 to +50 °C
Protection class	IP54
System requirements	requires iOS 11.0 or newer; requires Android 6.0 or newer; requires mobile end device with Bluetooth 4.0
Product colour	Black
Auto-off	10 min*
Battery type	3 AAA micro batteries
Battery life	130 h
Data transfer	Bluetooth®
Radio range	150 m
Refrigerants in instrument	R407H; R23; R290; R1234yf; R442A; R134a; R123; R452B; R438A; R421A; R453a; R401B; R1233zd; R410A; R407A; R407C; R452A; R401A; R422C; R427A; R422B; R424A; R125; R414B; R404A; R408A; R448A; R422D; R12; R114; R421B; R449A; R409A; R420A; R444B; R32; R454A; R124; R402A; R450A; R407F; R416A; R13; R437A; R1234ze; R454B; R402B; R22; R434A; R454C; R455A; R458A; R500; R502; R503; R507; R513A; R600a; R718 (H₂O); R744 (CO₂)
Refrigerants update via App	R11; FX80; I12A; R1150; R1270; R13B1; R14; R142B; R152A; R161; R170; R227; R236fa; R245fa; R401C; R406A; R407B; R407D; R41; R411A; R412A; R413A; R417A; R417B; R417C; R422A; R426A; R508A; R508B; R600; RIS89; SP22
Storage temperature	-20 to +60 °C

* when not connected via Bluetooth

testo 115i – Clamp thermometer operated via smartphone

Temperature – NTC
Measuring range	-40 to +150 °C
Accuracy	±1.3 °C (-20 to +85 °C)
Resolution	0.1 °C

General technical data
Weight	127.4 g
Dimensions	183 x 90 x 30 mm
Operating temperature	-20 to +50 °C
Product-/housing material	Plastic
System requirements	requires iOS 13.0 or newer; requires Android 8.0 or newer; requires mobile end device with Bluetooth 4.0
Product colour	black/orange
Battery type	3 AAA micro batteries
Battery life	150 h
Data transfer	Bluetooth®
Radio range	100 m
Storage temperature	-20 to +60 °C