Ahlborn ALMEMO 2290-2/3, Руководство по эксплуатации

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7.1.2 Memory for Momentary Values
If a measured value shall be frozen at any point in time, for an easier
evaluation, the key
MEAS.VAL.
must be operated again within the function
MEAS.VALUE.
This hold function is indicated by an arrow ´
HOLD ´ in the display.
The clearing of the memory for momentary values can be performed by
pressing the key
MEAS.VAL. once again or by selecting another function.
7.1.3 Differential Measurement (only ALMEMO 2290-3)
A true differential measurement between the inputs CH1 and CH2 or CH4 and
CH5 is possible by activating the measuring channels CH3 or CH6. For this
purpose, the function RANGE ´
BE
´ must be selected by using the key
F2
and
the key CH must be used to select the channel 3 or 6. After holding down the
key the symbol "
d1-2
" or "
d4-5
" starts flashing, and by pressing
ENTER
the key once again the differential function can be activated. In this ENTER
function, the measured values of both sensors involved are determined and the
arithmetic difference is indicated on the display and provided as output to the
analogue output.
The difference is only available if both sensors have the same
measuring range (e.g. NiCr-Ni).
7.1.4 Memory for Peak Values
From the measured values that are obtained from each measuring point the
maximum and minimum value is determined and stored each time. For
displaying the peak values the function MAX VALUE or MIN VALUE must be
selected by using the key F1 and the required channel must be set.
Function MAX VALUE ´
MH
´ and MIN VALUE ´
ML
´
Select by using the key
F1...
...
F1
1: 1 2 3.4
MH
Clear Max Val, Min Val: ,
ENTER
1s
CLEAR
1: - - - -
MH
If the cleared channel is also the selected measuring channel, the actual
measured value will be immediately displayed after the clearing process.
The peak values are also cleared when a total clearing (see 7.) or a change of
the measuring range is performed (see 6.2).
ALMEMO

2290-2/3 29
Continuous Measurement of a Measuring Point