Averaging
11.4.5 A
veraging over the measuring time,measuring duratio
n
To determine the average value of all meas. values, that were acqired over the
conversion rate, over a defined period, the averaging mode
´
CONT
´
must be
set for the required measuring channel. Averaging can be performed either with
or without the cycle. A measuring point scan is always performed at start-up
and stop in order to record the start value and end value each with the applica-
ble time-of-day. In order to record the average value
M
function channel
M(t)
(see 12.3.9, 12.3.10) is needed.
Set averaging mode
Averaging mode CONT
Clear average value automatically at start-up (see 12.5.8)
Verification
or after selecting the averaging value and pressing
<CLR>
To start averaging press
<START>
©
»
Read out the meas. time (see 11.4.6) in function
Meas.time: 00:01:23.40
To stop averaging press
<STOP>
ll
For a fixed mean time the following function is used
Meas. duration 00:02:00
Read out average value in function
Average value: 3,24m¡
To output all function values of the menu press
<PRINT>
11.4.6 Measuring time, measuring duration, timer
For averaging over time (see above) and for many other measuring operations
the actual measuring time, from start to stop, is required. For continuously mon-
itoring the measuring time - without clearing the real time - the Measuring time
function is provided; this has the format hh:mm:ss.xx with a resolution of 0.10
seconds. If the function ´Clear measured values at start of measuring operation´
is activated in the operating parameters (see 12.5.8) the measuring time will
also be cleared automatically at each start-up.
Function Measuring time
Measuring time 00:00:00.00
To clear the measuring time in Measuring time function press
<CLEAR>
Measuring duration
If you want to stop a measuring operation or an averaging process (see above)
after a certain length of time, you can program the measuring duration in the
menu
Times - Cycles
(see 12.1.4) or in a user menu; (this function is displayed
in the status bar as ´
©l
´).
Measuring duration function
Meas.uring duration 00:00:00
When recording to memory use a programmed measuring duration
to ensure that recording does not abort prematurely.
ALMEMO
®
5690-2M
43
Measuring rate m
i
M
Start
Stop
M
=
∑
i
m
i
/
N
