Draught; G.2.3 Draught - TESTO 335 Instruction Manual

G. Measuring
40
G.2 Measurements
Running a measuring program:
1 Select the program
2 Select
Start without zeroing
or
Start with zeroing
- If selected: Gas zeroing (32 s).
- Stabilisation phase (60 s).
- The program will run and then stop after the programmed time.
Option:
To print readings:
To cancel the program:

G.2.3 Draught

The function is only available on instruments with the "Pressure/flow speed

Draught

measurement" option and with a flue gas probe connected.
Do not measure for longer than 5 min, as the drift of the pressure sensor means that
the readings could be outside the tolerance limits.
Calling up the function:
Measurements
Measuring:
1 Start measuring:
- Draught zeroing (5 s).
2 Position the flue gas probe in the centre of the flow (area of the highest flue gas
temperature). The display showing the maximum measured flue gas temperature (FT)
helps when positioning the probe.
- The reading is displayed.
3 Stop measuring
- The reading is recorded.
Option:
To print the reading:
4 To copy the reading to the
- The
Measurements
.
Start
(only available if gas zeroing has already been carried out)
and start the program with
.
Print
, start again:
Stop
OK Draught
.
Start
.
Stop
.
Print
menu:
Flue gas
menu is opened.
.
OK
.
Start
.
OK
.
OK