TESTO 454 - Page 46

5. Setting up measurement system
46
5.1.5 Assigning function keys
Function bar
- Measurement menu is activated.
As required:
Use or to change display view so that the function button which is to be
assigned is visible.
1
Press , release and immediately press the function button to be assigned:
-
A selection list of the possible functions appears.
2
Select function and confirm with .
Reversing the assignment:
1
Press menu key , release menu key and then immediately press the defined
function key.
2
Select empty field with and confirm with .
*
This function appears only if the WBGT probe Item no. 0699 4239/1 is connected!
The WBGT index is used to determine the maximum exposure time in high-termperature workplaces (e.g.
steel industry, foundries, glass industry or blast furnaces).
Control Unit Logger
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Function bar
Free, non-assigned function button
Zoom readings
Hold current reading
Display max. values, since switch-on
Display min. values, since switch-on
Mean calculation
Activate volume flow meas. (with a velocity or exter-
nal differential pressure probe or internal pressure
probe)
Activate/deactivate velocity measurement (with an
external differential pressure probe or the
internal pressure sensor)
Zero pressure probe at user-defined probe socket
(at least one differential pressure probe)
Zero the CO probe
Start/stop measurement program
Determine system configuration
Save readings
Print readings
Printer line feed
Turbulence calculation
(with connected turbulence probe)
Switch off alarm
40 hPa meas. range for internal pressure sensor
200 hPa meas. range for internal pressure sensor
Determine WBGT index *
Direct display of all error messages
Differential temperature
Max
Min
Mean
Vol
m/s
dP2
Pext=0
ppm=0
Start
Stop
Search
Save
Print
LF DDr
dP1
Turb
Zoom
Hold
AlOff
WBGT
Diag.
Delta TT