Averaging Over Individual Manual Meas Operations; Averaging Over Time - Ahlborn ALMEMO 2590-2 Operating Instructions Manual

because this would at many measuring points
reduce the measuring rate too strongly :
Time constant (s) = smoothing / measuring rate · 2
How the averaging menus function :

The following averaging menus use some of the standard functions
such as averaging mode, cycle, measuring rate - appropriately repro-
grammed. Data output to the interface and memory is possible but
this must be configured. To also display the average value acquired
as it is being output a function channel M(t) must be activated on
channel M32/33/34 (see 7.2). This will stop any data logger recording
currently running; this will subsequently have to be reinitialized.

11.2.2 Averaging over individual manual meas operations

To obtain the average of individual measuring
operations at particular locations or times select
the menu average value over measuring op-
erations . Here the individual manual measuring
point scans E can be performed.
i
E1
CLR MANU
1. To select an average value (see 8.4) and to clear it press :
Function average value shows :
Function number over measuring operations shows :
To set memory activation, output format :
2. Acquire individual measured values Ex manually :
Function average value shows :
Function number shows :
3. Repeat step 2 for each measuring point.
For flow probes call up the volume menu by pressing :

11.2.3 Averaging over time

To determine average values over a certain du-
ration there are 2 possibilities - either by pressing
the Start and Stop keys accordingly or by enter-
ing a duration for averaging which is started
manually but stops automatically. A measuring
point scan is always performed at start and stop
in order to record to memory the start value, end
value, and average value - each with the applica-
ble time-of-day (see 11.5).
E2 E3
MANU MANU
Meas rate : 10 mops Cont : -
13:
L840 flow
Average value
Number
MANU Mªª
E4
MANU
average value : ----- m¡
number :
<MON/MOFF>
<MANU>
average value :
number:
<VOL ►>
13:
L840 flow
Average value
Measuring duration
START Mªª
ALMEMO
Averaging
25.45 m/s
24.57 °C
00013 U
M VOL© FCT
∑
/N
M= E
i
i
,
PROG <CLR>
00000 U
,
<FORM> see 11.5.5
12.34 m¡
00001
see 11.2.6
25.45 m/s
24.57 °C
00:01:30.56 U
M VOL© FCT
® 2590 33