Ziegler RA10 Manual de usuario
User's Manual
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© Ziegler Instruments Order No. User Manual-E1.R0-921022-2-2014-ENRA 10
RA10
Digital Multimeters
Analogue Meters With Moving - Iron Movement
1000 V
fused
OFF WF
Hz/%
V~
0C
F
0C
OFF
W
A
mA
FUNC AUTO/MAN REL HOLD/ON
0
C
V~
V
A~
mA~
RA 10
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RA 10 Operating Elements
1 Terminal Sockets
2 LCD Display
3 Data HOLD/ ON Pushbutton
4 Pushbutton for Relative value
5 Function Selector Switch for ON/OFF
and Measurement Function Selection
6 Pushbutton for Automatic or Manual
range selection
7 Multifunction Pushbutton ( yellow key)
Display
1 Digital Display with Indication of Decimal Point and
Polarity
2 Low Battery Display
3 REL, HOLD, Display
4 Continuity Test Display : Buzzer Indication
5 Diode Measurement Display
6 Display for Unit of Measured Quantity
7 Display for Automatic Measuring Range Selection
8 Display of Selected Current / voltage Type
1. Safety Features and Precautions ...................
2. Initial Start-up ...................................................
3. Selecting Measuring Functions & Ranges ....
3.1 Measuring Function Selection............................
3.2 Automatic Measuring Range Selection..............
3.3 Manual Measuring Range Selection..................
4. Liquid Crystal Display ....................................
4.1 Digital Display ...................................................
5. Buzzer ..............................................................
6. Measurement Value Storage “HOLD”............
7. REL - Relative value measurement ...............
8. Voltage Measurement .....................................
9. Current Measurement ....................................
9.1 AC Measurement with (Clip-on) C.T. ................
10. Diode Testing & Continuity Measurement ....
10.1 Diode Testing ....................................................
10.2 Continuity Testing .............................................
11. Resistance Measurement ...............................
12. Capacitance Measurement ............................
13. Frequency & Duty cycle Measurement ........
13.1 Frequency Measurement .................................
13.2 Duty Cycle Measurement .................................
14. Temperature Measurement ............................
15. Specifications .................................................
16. Maintenance ....................................................
16.1 Battery ..............................................................
16.2 Fuses ................................................................
16.3 Housing .............................................................
17. Repair and Replacement parts service .........
5
7
8
8
9
9
10
10
11
11
11
11
13
14
15
15
16
17
18
20
20
20
21
22
27
27
28
29
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You have selected an instrument which provides you with a
high level of safety.
The RA 10 digital multimeter is manufactured
in complaince with safety regulations. In case of incorrect
use or careless handling, the safety of both user and
multimeter is not assured.
To maintain the safe and proper condition of the meters
and to ensure their safe operation, it is absolutely neces-
sary to carefully and completely read these operating
instructions before using any meter. These instructions
must be followed in all respects.
Observe the following safety precautions :
* The meter must only be operated by persons who under-
stand the danger of shock hazards and know how to apply
safety precautions. Shock hazards exist anywhere, where
voltages of more than 30 V (TRMS) may occur.
* Do not work alone in shock hazardous environment while
carrying out measurement
* The maximum allowable voltage between any terminal
sockets (1) and earth is equal to 1000 V. Voltages of
greater than 500 V may only be applied to sockets " ", and
"V" with the selector switch in the voltage measurement
position (selector switch in "V" position).
* Take in to account that unexpected voltages can occur at
devices under test (e.g. defective devices). For example,
capacitors can be dangerously charged.
1 Safety Features and Precautions
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* Verify that the test leads are in good condition, e.g. no
cracked insulation, no open circuits in the leads or
connectors.
* This meter must not be used for measurements on circuits
with corona discharge (high-voltage).
* Be particularly careful when measurements are made in HF
electrical circuits. Dangerous composite voltages may be
present.
* Measurements under moist ambient conditions are not
permitted.
* Do not exceed the permissible overload limits of the
measuring ranges. Limit values can be found in the table
"Measuring Ranges" in chapter 15 "Specifications".
* All current ranges are equipped with fuses. The maximum
allowable voltage for the measuring current circuit
(=nominal voltage of the fuse) is equal to 600 V~.
* The instrument may only be used in power installations
when the electrical circuit is protected with a 20 A fuse
or circuit breaker, and the nominal voltage of the installation
does not exceed 1000V.
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Repair, Parts Replacement and Calibration
After opening the meter, live parts may be exposed. There-
fore, the meter must be disconnected from the measuring
circuit prior to opening its case for repair, replacement of parts
of calibration. If repair or calibration cannot be avoided unless
the meter is open and live, this work must be performed by a
qualified person who understands the danger involved.
Faults and extraordinary Stress
When it must be assumed that the safe operation is no longer
possible, take the meter out of service and secure it against
accidential use.
It is assumed that Safe operation is no longer possible,
* when the meter shows oblivious sign of damage,
* when the meter no longer functions correctly,
* after a prolonged storage under adverse conditions,
* due to severe stress due to transportation.
2 Initial Start-Up
Battery
Fit the meter with battery (batteries) provided along with the
meter
please see chapter 16.1, page 27, before initial start-up of
your instrument, or after a lengthy period of storage.
Switching the Meter ON
Turn the Function selector switch from the OFF position to the
desired measuring function.
All of the segments of LCD are activated briefly.
A drawing of the LCD can be found on page 2.
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Automatic turn-OFF
Your meter switches itself OFF automatically after
15 minutes, if no keys or the selector switch have been
activated during this time.
Switching the Meter back ON
Activate the HOLD/ON key.
Switching the Meter OFF
Turn the selector switch to the OFF position.
3 Selecting Measuring Functions and Ranges
3.1 Measuring Function Selection
The desired measuring function is selected with the Function
selector switch (blue or yellow printing). In order to select the
function printed in yellow half circle, the yellow multifunction
key must also be pressed. If the multifunction key is pressed
again, the function printed in blue half circle is reactivated.
Note !
Electrical discharge and high frequency interference
can cause incorrect displays, and may block
the measuring sequence. To reset, switch the
meter off, and then back on. If this procedure is
unsuccessful, briefly disconnect the battery from
the contact terminals.
Attention !
Before opening, disconnect the meter from the
measuring circuit and observe chapter 16,
page 27!
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AC
3.2 Automatic Measuring Range Selection
These multimeters features autoranging for all measuring
ranges except for the ranges 400 mV ~ and 10 A. Automatic
selection is functional as soon as the meter is switched ON.
According to the measured quantity applied, the meter auto-
matically selects the measuring range which gives the best
resolution.
3.3 Manual Measuring Range Selection
You can switch OFF autoranging, select and fix the ranges
manually according to the table given on page no. 10.
First select the desired measuring function with the
function selector switch and, if appropriate, the
multifunction key.
Briefly activate the AUTO/MAN key.
Manual mode is switched OFF if you press and hold the
AUTO/MAN key until you hear a second acoustic signal,
and the display switches to AUTO.
When switching back to automatic operation in the
400 mV~ range occurs, the 4 V ~ range is activated.
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Note : 0
For Temperature (C), Frequency (Hz), Duty cycle (%)
and Capacitance (F) measuring range is always Auto.
No manual range selection is possible.
4 Liquid Crystal Display
4.1 Digital Display
The digital display shows the measurement value, decimal
point and sign. The selected measuring unit and function are
displayed. When measuring DC quantities minus sign
appears in front of the digits, if the positive pole of the
measurement magnitude is applied to the " " input.
"OL" appears if the measuring range upper limit is
exceeded.
The digital display is updated thrice per second for V, A, W,
Capacitance, Frequency & Duty cycle measurements.
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