TESTO 549 - Page 7

3 Specifications
7
Characteristic Values
Resolution
Pressure resolution: 0.01 bar/0.1 psi/
1 kPa/0.001 MPa
Temperature resolution: 0.1 °C/0.1 °F
Accuracy (nominal
temperature
22 °C/71.6 °F)
Pressure: ±0,5 % of full scale (±1 digit)
Temperature (-40…150°C): ±0.5 °C (±1 digit)
/0,9°F (±1 Digit)
No. of refrigerants 60
Selectable
refrigerants
No refrigerant, R11, R12, R22, R123,
R1234ze, R125, R13B1, R134a, R14,
R142B, R152a, R161, R23, R227, 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, R718 (H
2
O), R744 (CO
2
) (only in
measuring range up to 60 bar), R1234yf
Measurable media
Measurable media: All media that are stored
in the testo 549 and testo 550 Not
measurable: Ammonia (R717) and other
refrigerants which contain ammonia
Ambient conditions
Operating temperature: -20 to 50 °C/
-4 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)
IP class 42
Power supply
Current source: Rechargeable
batteries/batteries 4x 1.5 V, type
AA/mignon/LR6
Battery life: approx. 250h
(display light off, Bluetooth off)
Display Type: Illuminated LCDResponse time: 0.5 s