Operation; Manometer Screen - testo 555 Bedienungsanleitung

5. Operation

P P r r e e l l 0 0 . . 0 0
1 1 3 3 4 4 A A - - 2 2 6 6 . . 3 3
10

5.1 Manometer screen

The manometer screen appears as the standard measurement
0 0 . . 0 0
screen after the unit has been switched on. The following
- - 2 2 6 6 . . 3 3
information is displayed:
Kind of pressure
P P r r e e l l
for quasi-relative pressure: 1,013 mbar is subtracted from
the measured absolute pressure
-or-
P P
for absolute pressure
a a b b s s
Refrigerant
1 1 3 3 4 4 A A
e.g.:
If the refrigerant is unknown, no temperatures are displayed.
Pressure
0 0 . . 0 0
e.g.:
is displayed on the left and the red connection on the right.
Temperature
- - 2 2 6 6 . . 3 3
e.g.:
condensation temperatures of the selected refrigerant are
displayed beneath the pressures.
For non-azeotropic refrigerants, the figures beneath pressure blue
represent the temperature after complete evaporation and beneath
pressure red the temperature after complete condensation.
R R ? ? ? ? ? ?
for R 134A or
0 0 . . 0 0
. The pressure measured at the blue connection
- - 2 2 6 6 . . 3 3
. The respective evaporation and
for an unknown refrigerant.