Measures high side / low side pressures and temperatures
Simultaneous, real-time super heat and sub-cooling
External vacuum probe for faster and more reliable
evacuation of the system
App integration via Bluetooth for fast and convenient
remote monitoring and reporting via email
Refrigerant updates to the instrument via App
60 on board refrigerant profiles
4-way valve block with 1/4 in. and 3/8 in. ports
5 year warranty with registration
testo 557 – with external vacuum
and Bluetooth
The new testo 557 opens up new possibilities
for efficient analysis and documentation –
with Bluetooth / App integration. The wireless
connection allows users to read data on a
Smartphone or Tablet, quickly and conveniently.
Using the App, you can e-mail measurement
reports directly from the customer job site.
The App also allows you to update the stored
refrigerants.
The 557 now has a external vacuum probe for
faster and more reliable evacuations and is
suitable for all refrigeration systems or heat
pumps. This compact manifold has a 4-way valve
block, large backlit display and sight glass. Two
NTC thermistor clamp probes provide superior
accuracy of simultaneous, real-time superheat and
sub-cooling readings.
micron
Digital manifold
bar
Leak
Test
Super
heat
Sub-
cooling
psi/
°F/°C
available on:
Testo Inc. 800-227-0729 info@testo.com www.testo.com
available on:
testo 557
Technical Data
testo 557
testo 557 kit, digital manifold with
Bluetooth, 2 x clamp probes, external
vacuum probe, batteries, case and
certificate of conformity
Part no. 0563 1557
Operating temperature -4° to 122° F (-20 to +50 °C)
Storage temperature -4° to 140° F (-20 to +60 °C)
Battery life
(4 x AA Alkaline)
250 h (less with use of Bluetooth, backlight
and vacuum)
Dimensions 8.7”x4.0”x2.75” (220 x 101 x 70 mm)
Weight 2.8 lb (1270 g)
Protection class IP42 (splash proof)
Warranty
2 years; 5 years with registration
Refrigerants in the
instrument
60 profiles: R11, R12, R123, R1234yf,
R1234ze, R125, R13B1, R134a, R14, R142B,
R152a, R161, R22, R227, R23, R290, R32,
R401A, R401B, R401C, R402A, R402B, R404A,
R406A, R407A, R407B, R407C, R407D, R407F,
R408A, R409A, R410A, R411A, R412A, R413A,
R414B, R416A, R417A, R420A, R421A, R421B,
R422A, R422B, R422C, R422D, R424A,
R426A, R427A, R434A, R437A, R438A, R502,
R503, R507, R508A, R508B, R600, R600a,
R744 (CO
2
), R718 (H
2
O), update via App
0516 0012
Transport case for testo 549/550/557
and accessories
Probes / Accessories
Clamp probe for pipes to 1.38”
diameter (35 mm), NTC, Fixed cable
4.9 ft. (1.5 m)
Clamp probe for pipes to 1.38”
diameter (35 mm), NTC, Fixed cable
16.0 ft. (5.0 m)
Pipe wrap probe with Velcro for pipe
diameter to max. 3” (75 mm), NTC,
Fixed cable 4.9 ft. (1.5 m)
Pipe clamp probe (NTC) for pipe
diameters 0.2” to 2.5” (5 to 65 mm),
Fixed cable 9 ft. (2.7 m)
-40 to 257 °F
(-40 to 125 °C)
-40 to 257 °F
(-40 to 125 °C)
-58 to 158 °F
(-50 to +70 °C)
-58 to 248 °F
(-50 ... +120 °C)
±1.8 °F (-4 to 185 °F)
±1 °C (-20 to +85 °C)
±1.8 °F (-4 to 185 °F)
±1 °C (-20 to +85 °C)
±0.4 °F (77 to 158 °F)
±0.2 °C (-25 to +70 °C)
±0.8 °F (-58 to -13 °F)
±0.4 °C (-50 to -25.1 °C)
±0.4 °F (77 to 176 °F)
±0.2 °C (-25 ... +80 °C)
0613 5505
0613 5506
0613 4611
0613 5605
11.80”
(300 mm)
1.18”
(30 mm)
Range Accuracy Part No.
i.o
Subject to change without notice.
Pressure Temperature
Measuring range -14.7 to 870 psi (-1 to 60 bar) -58 to 302 °F (-50 to +150 °C)
Accuracy (at 70 °F) ±0.5 % fs ±0.9 °F (±0.5 °C)
Resolution 0.1 psi (0.01 bar) 0.1 °F (0.1 °C)
Connections 1/4”, 3/8” 2 x plug-in (NTC probes)
Overload 940 psi (65 bar) –
Vacuum
0 to 20,000 Micron
External vacuum probe (DIN connection)
1 micron (from 0 to 1000 micron)
–
Specifications
±10% of rdg +10 microns (100 to 1000 microns)
External vacuum probe
(DIN connection)
0638 1557
±10% of rdg +10 microns
(100 to 1,000 microns)
0 to 20,000
microns
Two-valve field replacement kit
400554 5500