Ahlborn ALMEMO 2290-4 V5, Руководство по эксплуатации

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7.1.2 Memory for Momentary Values
For fixing a measured value at a certain point in time, e.g. for an easier
evaluation, the key
M /
HOLD
must be operated again in function MEAS.VALUE.
This hold function is indicated in the display by an arrow ´
MEM
´.
The memory for momentary values can be cleared by pressing the key
M /
HOLD
again or by selecting another function.
7.1.3 Memory for Peak Values
From the acquired measured values of each measuring point the highest and
lowest value is determined and stored. For indicating the peak values the
function MAX VALUE or MIN VALUE must be selected with the key F1 and the
desired channel must be set.
Function MAX VALUE ´
MH
´ and MIN VALUE ´
ML
´
Selection with key
F1...
...
F1
1: 1 2 3.4
MH
Clearing max and min val.: ,
1s
PROGR CLEAR
1: - - - -
MH
If the cleared channel is the selected measuring channel, the measured value
will be indicated immediately after the clearing.
The peak values are cleared if a total clearing (see 7) or change of the range
(see 6.2) is carried out.
7.1.4 Smoothing by Sliding Averaging
In case of unstable measured values, e.g. when measuring turbulent flows it is
beneficial to smoothen the measured values by a continuous averaging. The
level of smoothing can be adjusted from 0 to 25s by means of the time constant
in function TIME CONSTANT ´
s
´ (see 5.2). It specifies the time period that is
applicable for the smoothened averaging of the measuring point. The
smoothened measured value can be read in function MEAS. VALUE and will
also be used for all subsequent evaluation functions. The smoothing can also
be used in a combination with the averaging (s.7.1.5), e.g. for net
measurements.
Function
TIME CONSTANT ´
s
´
Selection with the key
F1...
1: 1 0
s
Input according to 5.4.
The amount of averaged values depends on the conversion rate. The
continuous measuring point scan should be switched off as for many
measuring points the filtering effect could become too strongly limited.
F1
30 ALMEMO

2290-4
Continuous Measurement of a Measuring Point