User's Manual

3 Specifications
7
Characteristic Values
Accuracy (nominal
temperature
22 °C/71.6 °F)
Pressure: ±0.75 % of final value (±1 digit)
Temperature (-40…150°C): ±0.5 K (±1 digit)
No. of refrigerants 40
Selectable
refrigerants
No refrigerant, R12, R22, R123, R134a,
R290, R401A, R401B, R402A, R402B,
R404A, R406A, R407A, R407C, R408A,
R409A, R410A, R411A, R413A, R414B,
R416A, R417A, R420A, R421A, R421B,
R422A, R422B, R422D, R424A, R427a,
R434A, R437A, R438A, R502, R503, R507,
R600, R600a, R718 (H2O), R744 (only in
permissible measuring range up to 50 bar),
R1234yf (Display: T8)
Measurable media
Measurable media: All media that are stored
in the testo 550. Not measurable: Ammonia
(R717) and other refrigerants which contain
ammonia
Ambient conditions
Operating temperature: -10 to 50 °C/
14 to 122 °F
Storage temperature: -20 to 60 °C/
-4 to 140 °F
Housing Material: ABS/PA/TPU
Dimensions: 265 x 135 x 75 mm
Weight: approx. 1000 g (without batteries)
Power supply
Current source: Rechargeable
batteries/batteries 4x 1.5 V, type
AA/mignon/LR6
Battery life: approx. 150 h (display light off)
Display Type: Illuminated LCD
Updating of readings: 1 s
Response time: 0.5 s
Directives,
standards and tests
EC Directive: 2004/108/EC
Warranty Duration: 2 years
Warranty conditions: see website
www.testo.com/warranty