testo 6440 Bedienungsanleitung Seite 48

Setting the display
7settings are selectable:
• d1 = Measurement data update every 50 ms.
• d2 = Measurement data update every 200 ms = 0.2 sec.
• d3 = Measurement data update every 600 ms = 0.6 sec.
The measurement data update affects only the display. It has no
effect on the outputs.
• rd1, rd2, rd3 = Display as d1, d2, d3; but rotated by 180°.
• OFF = The measurement data display is switched off in
measurement mode.
The switch status LEDs remain active when the display is
switched off.
Factory setting: d3.
Display unit for flow rate
2 settings are selectable:
• Lmin = Flow rate in norm litres / minute
• nm3h = Flow rate in norm cubic metres / hour
Set the display unit before you set the values for the parameters
SPx, rPx, ASP and AEP. That way you avoid rounding up/down
errors in the internal conversion into other units, and are provi-
ded with exactly the values required.
Standard parameter of the display
Setting the measurement parameter which is to be shown in the
display during measurement mode: 2 settings are selectable.
• FLOW = Flow rate set in Uni. (= factory setting)
3
• TOTL = Counter total in Nm .
(also if Uni = Lmin)
Restoring factory settings
- Press the "Mode/Enter" button until rES appears.
- Press the "Set"button and hold it down until "- - - -" appears.
- Then briefly press the "Mode/Enter" button.
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