General Specifications - MasterCool 52240 Operating Instructions Manual

AC/DC Voltage Measurement
1. Set Function/Range Switch to desired V~ or V "
2. Insert the red test probe to " + " input jack and black test probe to " - " input jack.
3. Connect test prods of test probes IN PARALLEL to the circuit being measured.
4. Read the voltage value on LCD.
5. If you want to hold the display value, push the DATA HOLD switch before disconnecting the probes from the measuring
points.
Resistance Measurement
1. Set Function/Range Switch to desired range.
2. Insert the red/black test probes to the " + " and " - " input jacks respectively.
3. Connect the test probes to the circuit being measured and read the resistance value on LCD.
WARNING: Before taking any in-circuit resistance measurement, remove power from the
Diode Tests (" ")
1. Set Function/Range Switch to "
2. Insert the red test probe to " + " input jack and black test probe to " - " input jack.
3. Connect the Red test probe to the anode side and Black test probe to the cathode side of the diode being tested.
4. Read forward voltage (Vf) Value on LCD.
5. Connect the test probe to the diode, opposite of step 3. The digital display value should be over range (1). This can be
used for distinguishing anode and cathode poles of a diode.
WARNING: Before taking any in-circuit measurement remove power from the circuit being tested
Continuity Measurements "
1. Set Function/Range Switch to "
2. Insert the red/black test probes to the "+" and "-" input jacks.
3. Connect the test probes to the circuit being measured.
4. When the impedance on circuit is below 100, a continuous beep will sound.
Frequency Measurement (Hz)
1. Set Function/Range Switch to 2 KHz Range.
2. Insert the red/black test probes to the "+" and "-" input jacks.
3. Connect the test probes to the circuit being measured.
4. Read the frequency value (Hz) on LCD.
PEAK DETECT MEASUREMENT
1. Set Function/Range Switch to desired A ~ or V ~ range.
2. Set the Clamp Meter into the "PEAK HOLD" mode by pushing the "PEAK HOLD" Switch. The LCD display will indicate
"P" when Peak Detect mode is measured.
3. Follow this procedure for AC voltage and Current measurement. The displayed reading is the maximum RMS value of a
surge in current or a Voltage pulse. The reading decays at the rate of about 1 digi/second.

GENERAL SPECIFICATIONS

Display:
Sampling Rate:
Diameter of Conductor:
Polarity:
Range Selection:
Over Range Indication:
Low Battery Indication:
Battery Life:
Power Requirements:
Operating Temperature and Humidity: 32ºF to 104ºF (0ºC to 40ºC) below 80%RH
Storage Temperature and Humidity:
Dimension:
Weight:
Accessories:
" range.
circuit being tested and discharge all capacitors.
" range.
and discharge all capacitors in the circuit.
"
" position.
3 1/2 digit LCD (1999 count) with " P " (Peak Hold), " H " (Data Hold), "-",
"BT" (Lo Bat), "~", "V", "A", " ", "K", "KHz" and decimal enunciators.
2.5 times per second.
40mm max.
Automatic "-" negative polarity indication.
All ranges are measured by single range switch operation.
Highest digit of (1) or (-1) is display.
"BT" appears on display in the last 20% of battery life.
Up to 200 hours with an Alkaline battery.
Single 9V battery.
14ºF to 140ºF (-10ºC to 60ºC) below 80%RH.
8.2"L x 2.6"W x 1.3"H (208 x 65 x 31mm).
1.6 oz (330g) including battery.
Test probes, Instruction Manual, Carrying Case, Battery
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