Operation manual Pneumator
∙
Testo Industrial Services
∙
Version 1.4
∙
2019
∙
Page 18
the VELO display indication appears, which provides all relevant information of the
measurement, appears.
Meaning of the display elements (VELO):
o
Top left: Display of current operating mode (ZERO = zero setting, VELO =
velocity measurement operation, ERR = overload error)
o
In the upper middle: maximum measurement range (cannot be changed, value
according to model)
o
Top right: physical unit
o
In the middle: current velocity measurement value (calculated from the
measurement value of the internal pressure sensor).
o
Bottom left: Rechargeable battery charger display (at mains operation: plug
symbol)
Example
(compare illustration):
- Operating mode velocity (VELO)
- Maximum velocity = 40,825 m/s
- Current measurement value = 0 m/s
- Density = 1,2 kg/m
3
,
- mains operation (bottom left)
Protection against overload:
IMPORTANT: Please bear in mind that the connected pressure does not exceed
125% of the measurement range of the Pneumator. If this happens slowly, the
internal magnetic valve will lock at this value and ERR appears in the display. Make
sure that the high pressure is no longer present and unlock the equipment by
pushing the button OK.
ATTENTON: If an overload occurs too quickly (approx. <1ms), the pressure sensor
can be destroyed.
Manual zero balance (ZERO)
In case the reference measurement element has to be set to zero during the
measuring procedure, please press the ZERO button. After approx. 3-5 seconds the
measurement operation will proceed again.
