Perel ECM2, User Manual

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ECM2 PEREL
6
6. Depress the PUSH 500V push-push switch, the 500V on red LED lamp will light. Clamp meter display reading is
the insulation resistance value. If the reading is below 19M
Ω
, change clamp meter and insulation tester unit to
20M
Ω
range, can be increase the accuracy.
7. If the insulation tester unit is not used, the power switch must shift to power OFF position, and the test leads
must leave the E, L input connect. That can be increase battery life and prevent electrical shock hazard.
3.3 Measuring voltage
1. Connect the black test lead to the COM jack and the red test lead to the V
Ω
jack.
2. Set the rotary switch at the desired DCV or ACV range position and connect test leads across the source or load
under measurement.
The polarity of the red lead connection will be indicated along with the voltage value when making DC voltage
measurement.
3. When only the figure " 1" is displayed, it indicates overrange situation and the higher range has to be selected.
3.4 Measuring resistance
1. Connect the black test lead to the COM jack and the red test lead to the V
Ω
jack.
2. Set the rotary switch at desired
Ω
position and connect test leads across the resistor under measurement.
NOTE :
1. If the resistance being measured exceeds the maximum value of the range selected or the input is not
connected, an overrange indication " 1" will be displayed.
2. When checking in-circuit resistance, be sure the circuit under test has all power removed and that all capacitors
have been discharged fully.
3.5 Continuity test
1. Connect the black test lead to the COM jack and the red test lead to the V
Ω
jack. ( The polarity of the red lead
is positive " +")
2. Set the rotary switch at position and connect test leads across two points of the circuit under testing. If
continuitiy exists ( i.e., resistance less than about 50
Ω
), built-in buzzer will sound.
4. Specifications
Accuracy is specified for a period of one year after calibration and at 18°C to 28°C (64°F to 82°F) with relative
humidity to 80%.
4.1 General
DISPLAY 3 1/2 digit LCD, with automatic polarity indication
MEASURING dual-slope integration A-D converter system
OVERRANGE INDICATION "1" figure only in the display
MAXIMUM VOLTAGE BETWEEN TERMINALS
AND EARTH GROUND CAT II 600V
OPERATING TEMPERATURE 18°C to 28°C (64°F to 82°F)
STORAGE ENVIRONMENT 0°C to 50°C (32°F to 122°F)
POWER SUPPLY 9V battery
ACCESSORIES operating manual, set of test leads
LOW BATTERY INDICATION " BAT " appears on the display
SIZE (H x W x L) 37 x 90 x 230 mm (1.46" x 3.54" x 9.06")
WEIGHT approx. 320g (including battery)