O resistance and continuity measurements, Mo insulation resistance measurements – Amprobe AMB-25 Insulation-Tester User Manual
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4-5 Manual Data Memory and Read Mode :
5.
Ω
RESISTANCE AND CONTINUITY MEASUREMENTS
1). Clear the manual memorized data
1). Set the function switch to Ω
position.
c
Set the function switch to OFF position to turn off the meter.
d
Press and hold down "MEM" key, and turn on the meter.
When LCD shows "dEL" which means the manual memorized
data is erased.
2). Connect red test lead to “ VΩ ” terminal and black test lead to
“ COM ” terminal.
3). Connect the probe to the circuit to be measured. Measure
voltage first to ensure that no haszardous voltage is present, then
switch to ohms.
2). Manual data memory
c
Press "MEM" key each time, one set of reading to will be
stored to the memory. At this moment, LCD will show the
"MEM" mark and the memory address number. Total memory
size is 9 sets.
4). Read the resistance value from the display. If the resistance is
approximately 40Ω or less, the meter will beep.
d
When the memory is full, LCD will show " 9 " memory address
number.
3). Read Manual memory data
6. M
Ω INSULATION RESISTANCE MEASUREMENTS
c
Press "READ" key to enter READ mode, the LCD will show
"READ" mark and the memory address number.
6-1 Measuring Insulation Resistance
d
Press " " or " " key to select the desired memory address
number data for display.
Measuring insulation resistance requires the application of
potentially dangerous voltage to the circuit. This may include
exposed bonded metal work.
e
Press " READ " key again to exit this mode.
Before proceeding, ensure that the installation is correctly wired
and no personnel are endangered by any test.
1). Set the function switch to the desired MΩ test voltage position.
2). Connect red test lead to “ VΩ ” terminal and black test lead to
“ COM ” terminal.
3). The display will show “-----“ until the TEST button is pushed.
Press and hold the TEST key. The upper right display shows
the test voltage applied to the circuit under test. The main
display shows the resistance until a stable resistance reading is
displayed on the main display.