Operation
STEL and TWA mode
(weighted average)
5.5
Printout of
measurement
data
48
When the STEL or the TWA mode has been se-
lected, the meter will show the weighted average of
the readings during the last 15 minutes or the last 8
hours.
When the meter is turned on for less than 15
minutes (8 hours) the STEL value (TWA value)
will be the weighted average of readings taken
since the meter was switched on.
It takes at least 5 minutes to calculate STEL and
TWA. The display shows "----" during the first 5
minutes after having the meter switched on.
The STEL and TWA values are updated every 5
minutes.
Press START/ESC to return to the normal
measurement mode.
In measurement-mode or hold-mode press
HOLD for 3 sec., to print the measurement da-
ta on the printer Wöhler TD 100.
While printing is in progress, the current value will
blink on the screen of the Wöhler KM 410. The
printer will print all data measured when the
HOLD-button is pressed (Ta, RH, CO, CO
WBT). It is not possible to print data records.
Note!
Take care that there is no obstacle between the
IR-ports of the printer and the Wöhler KM 410.
, DP,
2