Turbulence Measurement Application; [Draught Rate] - TESTO 440 Instruction Manual

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4 Operation
3 Save the measurement.

4.5.12 Turbulence measurement application

Rate]
With this application menu, the measurement of the degree of turbulence and
draught can be determined in accordance with DIN EN 13779 or DIN EN ISO
7730.
The measurement is carried out automatically over a period of 3 minutes. For
ideal implementation, we recommend the use of:
Order number Name
0554 1590 Measuring tripod for comfort level measurements with
standard-compliant positioning of probes (including
case)
The application menu is enabled by the following probe:
Order number Name
0628 0152 Turbulence probe, fixed cable
The probe requires a warm-up period of around 3 seconds after
connection to the testo 440. Carry out the measurement after this.
The display shows the draught rate using the traffic light system.
Display
Green
Yellow
Red
46
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Meaning
Draught rate 0-20%
Draught rate 21-30%
Draught rate 31-100%
.com
[Draught
sales@GlobalTestSupply.com