Equus 4320 - Digital Multimeter (10 MegOhm) - Manual

SAFETY PRECAUTIONS/ WARNINGS
• This Digital Multimeter is intended for INDOOR USE ONLY.
• Pay close attention to WARNINGS stamped on the front and rear of the
meter's case. These warnings, as well as all warnings and precautions used
through out this manual, must be followed to avoid electric shock and/or per-
sonal injury.
• The RESPONSIBLE PARTY shall be made aware that, if the equipment is
used in a manner not specified by the manufacturer, the protection provided
by the equipment may be impaired.
To prevent electrical shock and/or damage to the tester or the equipment under
test, observe the following safety precautions:
• DO NOT apply more than the rated voltage, as marked on the meter,
between terminals or between any terminal and earth ground.
• Use caution when working above 30V AC rms, 42 V peak, or 60 V DC. Such
voltages pose a shock hazard.
• To avoid false readings that could lead to possible electric shock or personal
injury, replace the batteries as soon as the low battery indicator
displays.
• Use ONLY those test leads or probes provided with the meter. DO NOT use third-
party test leads or probes.
• Always inspect the multimeter, test leads and any other accessories for damage
prior to every use. If any damage is found, do not use tester until repairs are done.
• Always consider electrical and electronic equipment to be energized (live).
Never assume any equipment is de-energized.
• Never ground yourself when taking electrical measurements. Isolate yourself
from ground by using dry rubber insulating mats to cover all exposed/ground-
ed metal. Stand on rubber mats and wear dry clothing.
SPECIFICATIONS
GENERAL SPECIFICATIONS AND FEATURES
• 3-½ digit LCD display (maximum reading of 2000)
• Manual range control
• Automatic negative (-) polarity indication
• Automatic zero adjustment
• Over range indicator (except 10 A function). Displays "1" on LCD
• Low battery indicator. Displays battery symbol on LCD
• Safety standard: CE EMC/LVD. The meter is up to the standards of IEC1010
Pollution Degree 2, over voltage Category II (signifies protection against
transient impulses at the local level mains electrical supply).
• Equipment marked is protected throughout by Double or Reinforced Insulation.
• Operating environment:
Temperature - 32° to 104° F. (0° C to 40° C)
Humidity - Less than 80% relative humidity (non-condensing)
Altitude - up to 6562 ft (2000 meters)
• Storage environment:
Temperature - 4° to 140° F (- 20° to 60° C)
Humidity - Less than 90% relative humidity (non-condensing)
• Power Supply: One 9-volt (6F22) battery
• Fuse: 315mA/250V 5X20 mm (Radio Shack, GMA/217 series; #270-1046) fuse
• Dimensions:
Height - 5.50 in. (139 mm)
Width - 3.50 in. (89 mm)
Depth - 1.25 in. (32 mm)
• Weight (including batteries): approximately 5.7 oz (170 g)
ELECTRICAL SPECIFICATIONS
Accuracy of specifications in the following tables are based on an operating tem-
perature of 64°F to 82°F (18°C to 28°C) and a relative humidity of less than 75%.
Maximum voltage from V ma socket to COM socket is 500V AC/DC; from COM
socket to ground is 300V AC/DC.
DC VOLTS
RESISTANCE (OHMS)
DIODE TEST
CONTINUITY
DC AMPS
BATTERY TEST
AC VOLTS
TESTING PROCEDURES
A. AC/DC VOLTAGE MEASUREMENT
1. Plug the BLACK test lead into "COM" jack of the multimeter; plug the RED
test lead into the "V" jack.
2. Set the meter’s Function/Range Selector Switch to the appropriate ACV or
DCV position as desired.
3. Place the RED test lead onto the positive (+) side of the item being tested
and the BLACK test lead onto the negative (-) (across the source/load) side
of the item. BE CAREFUL not to touch any energized conductors with any
part of your body.
4. Read the results on the display.
Range Resolution Accuracy Overload
Protection
200 Ω 0.1 Ω
±(1% of reading
2K Ω 1 Ω
+ 5 digits)
250V DC/AC RMS
20K
Ω
10
Ω
200K
Ω
100
Ω
20M
Ω
10K
Ω
±(2% of reading
+ 5 digits)
Open Circuit Voltage: Approximately 3V
Function Range Resolution Accuracy Overload
Protection
Diode test 1mV 0.5 ~ 0.8V 250V
DC/AC
RMS
Open Circuit Voltage: Approximately 2.8V
Forward Voltage Drop: Approximately 1mA
Range Resolution Accuracy Overload
Protection
2000
µ
A 1
µ
A
20mA 10
µ
A ±(1.5% of reading
0.315A/250V fuse
200mA 100 µ A
+ 5 digits)
10A 10mA ±(2% of reading Non-Protected
+ 5 digits)
Measuring time is equal to or less than 15 seconds and time
interval is equal to or over 15 minutes.
Range Resolution Overload Protection
1.5V
10mV 0.315A/250V fuse
9V
Overload
Range Resolution Accuracy Protection
200V 100mV ±(1.2% of reading
500V DC or AC
500V 1V + 10 digits)
Frequency: 40-400Hz
OWNER’S MANUAL
DIGITAL MULTIMETER
MRP #93-0003
Threshold Continuity Beeper Response Time
*100
Ω
(ohms) 4.0K Hz <100 ms
*Beeper will sound only if resistance (continuity) being measured is
under 100
Ω
Range Resolution Accuracy Overload
Protection
200mV 100 µ V 230 Vrms
2V 1mV ±(0.8% of reading
20V 10mV + 5 digits)
500V DC
200V 100mV or AC
500V 1V ±(0.8% of reading
+ 5 digits
Input impedance: 10M
Ω
for all ranges.
WARNING
To avoid possible electric shock, instrument damage and/or equipment
damage, DO NOT attempt to measure voltages ABOVE 500V AC/DC or
take measurements if the voltage is unknown. 500V AC/DC between the
COM and V jacks is the maximum voltage that this instrument is
designed to measure. The "COM" terminal potential should not exceed
300V AC/DC measured to ground.