6
7. Minimum value and Maximum value ’’MIN/MAX" storage
facility.
With the MIN/MAX function, you can hold the minimum and the maximum
measured value which was applied to the input of the multimeter after
activating MIN/MAX function. The most important application is the
determination of the minimum and the maximum value for long-term
monitoring of measured quantities. MIN/MAX does not influence the analog
indication The actual measured value can still be noted/read. Apply the
measured quantity to the meter and select the measuring range prior to
activating the MIN/MAX function. With the function activated, you can select
the measuring ranges only manually, if you switch to another range, the
stored MIN/MAX values are cleared.
1) Reactivated by falling below the specified limits of the measured value.
2) With the exception of the ranges 30 mV and 300 mV.
As long as the DATA hold function is active, manual range selection is not
possible. The DATA hold function is switched OFF, when,
E
The “
acknowledged by 2 sound signals.
E
The function selector switch (6) is operated or
E
The multimeter is turned OFF and ON again.
DATA ” push button(3)
is pressed for approx. 1s. This is
5.3. Backlit
The instrument is provided with user selectable Back-lit for taking
measurements in poor lighting conditions/ dark areas.
Switching the Backlit ON
By pressing “AUTO/MAN” and “DATA/MIN/MAX” keys simultaneously the
Backlit can be switched ON.
Switching the Backlit OFF
By pressing “AUTO/MAN” and “DATA/MIN/MAX” keys simultaneously the
Backlit can be switched OFF.
6. “DATA” hold facility
The DATA function allows to automatically hold the measured values. This is
particularly useful, for instance, when connecting the probes to the measuring
point requires full attention. When the measured value is applied and the
’’condition’’ according to the table shown below is met, the meter holds the
measured value on the digital display and emits a sound signal. The probes
can now be removed from the measuring point and the measured value on the
digital display (9) can be read. When the measured value falls below the limit
specified in the table, the meter is reactivated for a new storage.
The analog indication is not influenced by the DATA hold,
measured value can still be noted / read. Note that with a held digital display,
the location of the decimal point is also held. With autoranging selected, the
measuring range of the analog indicator is no longer known.
The actual
Function
DATA
Activate
Store
Reactive
1)
Reset
Short
Long
DATA
MIN/MAX
(3)
Condition
Measuring
Ranges
>280
>24
< OL
>280
< 280
< 24
OL
< 280
dis-
played
stored
mea-
sured
value
Cleared
flashes
dis-
played
flashes
Cleared
1 x
1 x
2 x
Meteracknowledgement
Display
DATA
Sound
Signal
Meas.
Value
digital
Limit of
Measured
Values
(digits)
V
2)
A
Ω
,
F,Hz,%,
I
cap
(Iea)
V
2)
A
Ω
,
F,Hz,%,
I
cap
(Iea)
25
Influence
quantity
Range of Influence
Measuring
ranges
Attenuation
Common
mode
interference
voltage
Normal
mode
interference
voltage
V
> 120 dB
3V~
, 30 V ~
> 70 dB
300 V ~
1000 V ~
> 60 dB
V
> 50 dB
V~
> 110 dB
Noise quantity max. 1000 V ~
Noise quantity max. 1000 V ~
50 Hz, 60 Hz sinusoidal
Noise quantity V ~
value of the measuring range at at ime
max. 1000 V ~ , 50 Hz, 60 Hz.
sinusoidal
Noise quantity max. 1000 V
-
Variation
Influence
quantity
Range of Influence
Measured
quantity/
Measuring range
+ 1 Digit
+ 2 Digit
1 x intrinsic error
V
+ 2 Digit
V~
+ 4 Digit
A
+ 4 Digit
A~
+ 6 Digit
30
Ω
/ 300 /
Ω
0
C
+ 4 Digit
3 k
Ω
--- 30 M
Ω
+ 3 Digit
nF,
m
F,
+ 1 Digit
Hz
+ 1 Digit
%
+ 1 Digit
5) ...< 7.9 V
> 8.1 V ...10.0V
75 %
3 days
Meter off
-
-
Battery
voltage
Relative
humidity
DATA
MIN/MAX
V
A
Ω
F,
Hz
%
0
C
V
, A
I
cap
(Iea)
I
cap
(Iea)
V
,
,
,M INSU
Ω
1) With Temperature : Error for data apply per 10 K change in temperature
With Frequency
: Error data apply to a display from 300 digits onwards
2) With zero adjustment
3) With unknown waveform (crest factor CF > 2), measure with manual range
selection
4) With exception of sinusoidal waveform.
5) After the “ ” symbol is displayed.
Summary of Contents for Zeta 30
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