3
(1) Liquid Crystal Display
(11) Symbols for displaying the
(2) ON/OFF push button
selected functions
(3) Push button
(12) Display for selected function
(4) Push button
(13) Display for the unit of
(5) TEST Push button
measured quantity
(6) Function selector switch
(14) Over range Indication
(7) Terminal sockets
(15) Pointer for Analog indication
(8) External Power supply jack (Optional)
(9) Symbol for
(16) Scale for Analog Indication
“CONTINUOUSLY ON”
(17) Activated stop watch Indicator
(10) Digital display with indication
(18) Zero adjust indicator
of decimal point and polarity
(19) Low battery indicator
(20) Buzzer indication
Contents
Page
1
Safety Features and Precautions
4
2
Initial Start-Up
5
3
Selecting Measuring Functions
6
4
Liquid Crystal Display
6
4.1
Digital Display
6
4.2
Analog Display
6
4.3
Backlit
6
5
Insulation Resistance Measurement (M )
7
5.1
Preparation for measurement
7
5.2
Insulation resistance measurement
7
5.2.1
Manual Insulation resistance measurement
7
5.2.2
Continuous measurement for a pre-selectable time
8
5.3
Conclusion of measurement and discharging
8
6
Additional Features
8
6.1
Pre-selectable limit checks (Go / No-Go option)
9
6.2
Storing the measured resistance value
9
6.3
Minimum value and Maximum value “MIN/MAX”
9
storage facility
7
Continuity Testing and Resistance Measurement
11
7.1
Continuity Testing
11
7.2
Low Ohm Measurement
11
7.3
Zero adjustment
11
8
Voltage Measurement (VAC/DC)
12
9
Default Live Circuit Warning
12
10
Stop Watch
13
11
Menu Structure
13
11.1
Description of Menu items
14
11.1.1
Setting the GoNoGo values
14
11.1.2
Setting the Timer values
14
11.1.3
To see the stored values
14
12
Specifications
15
13
Maintenance
18
13.1
Battery
18
13.2
Operation with mains Adapter (Optional)
18
13.3
Fuses
19
13.4
Housing
19
Ω
Mechanical Design
Protection
Instrument :IP 50
For terminal socket : IP 20 according to
DIN VDE 0470 Part 1 / EN60529
Dimensions
W x H x D
84mm x 195 mm x 35 mm
Weight
500 g including battery
13
Maintenance
Attention !
Disconnect the instrument from the measuring circuit before
opening the instrument to replace the battery or the fuse !
13.1 Battery
Before initial Start-up, or after long storage of your instrument, make sure
that no leakage has occurred at the instrument battery. Repeat this
inspection at regular intervals.
Battery symbol “ ” appears on the LCD in either of below conditions :
1. Battery voltage is <5.4 V. Battery replacement (recharging in case of
rechargeable battery) is necessary.
2. For a specific range depending on application
In either of above condition when the battery symbol is displayed, no
measurement can be done, and the battery symbol flashes.
Replacing the Batteries
*
Lay the instrument on to its face, loosen the two screws at the rare
panel and lift out the housing base, starting at the bottom (a). The
housing base and the housing top are held together with snap hooks
at the top of the front panel.
*
Remove all the cells from the battery holder and replace them with
new ones.
*
Important for reassembly : first lay the housing base into place such
as shown in diagram below. Push the housing base and housing
top together, first at the bottom front (a) and then at the top front (b).
*
Retighten the housing base with the two screws.
*
Please dispose of the used cells properly.
13.2 Operation with Mains Adapter (Optional)
Use only Mains Adapter (Output : 12VDC, 1000mA) to power ON the
instrument.
During power supply via mains adapter in inserted batteries are cut off
electronically and thus can be left inside the instrument.
Note
: There is no need of internal batteries when AC-DC Adapter
is connected to the instruments.
If re-chargeable batteries are used they must be charged outside
the instrument.
18
(b)
(a)
Summary of Contents for Zeta 20
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