MARTINDALE MM45 Operating Instructions

Operating Instructions

Model MM45
Digital Multimeter
HIGH ENERGY SYSTEMS
GS38 advises fused test leads to be used when
working on high energy systems. Suitable leads
are Martindale TL55.
SPECIFICATIONS
Display: 3½ digit liquid crystal display (LCD) with a
maximum reading of 3200.
Analog bar graph: 34 segments with measurements
12 times per second.
Polarity: Automatic,(-) negative polarity indication.
Overrange: "OL" mark indication.
Zero: automatic.
Low Battery Indication: The
the battery voltage drops below the operating level.
Measurement rate: 2 times per second, nominal.
Operating environment: 0°C to 50°C at < 70% R.H.
Storage temperature: -20°C to 60°C, 0 to 80% R.H.
with battery removed from meter.
Battery life: 200 hours typical with carbon-zinc.
Battery: Single standard 9-volt battery, MN1604,
NEDA 1604, JIS 006P, IEC 6F22, PP3.
Dimensions: 147mm (H)x 70mm (W)x 39mm (D).
Weight: Approx. 345g (11.8 oz) including holster.
Auto power off: Meter automatically shuts down after
approx. 10 minutes of inactivity.
Accessories: One pair test lead, One spare fuse, 9V
battery (installed) and Operating Instructions.
The instrument meets the requirements for double
insulation to BS EN 61010-1 at 600V Installation
Category III. Installation Category III (distribution
level) relates to transient overvoltage likely to be
found in fixed installation wiring.
The following safety information must be observed
to ensure maximum personal safety during the
operation of this meter:
Do not use the meter if the meter or test leads look
damaged, or if you suspect that the meter is not
operating properly.
Never ground yourself when taking electrical
measurements. Do not touch exposed metal pipes,
outlets, fixtures, etc, which might be at ground
potential. Keep your body isolated from ground by
using dry clothing, rubber shoes, rubber mats, or
any insulating material.
Turn off power to the circuit under test before
cutting, unsoldering, or breaking the circuit. Small
amounts of current could be dangerous.
Use caution when working above 60V DC or 30V AC
rms. Such voltages pose a shock hazard.
When using the probes, keep your fingers behind
the finger guards on the probes.
Voltage
(50/60Hz)
Current
(50/60Hz)
OHM
is displayed when
Diode
Test
Continuity
Check
SAFETY INFORMATION
MM45 REV3 7/05
Range DC Accuracy
320mV ± 1.2% rdg+1d
± 0.8% rdg+1d
3.2V
32V
± 1.2% rdg+1d
320V
600V
Range DC Accuracy
320µA
± 2.0% rdg+1d
3200µA
32mA
320mA
10A ± 3.0% rdg+3d
Resolution
Range
100mΩ
320Ω
1Ω
3.2kΩ
10Ω
32kΩ
320kΩ
100Ω
3.2MΩ
1kΩ
32MΩ
10kΩ
0-2000
1mV
Range
Resolution
100mΩ
320Ω
This instrument is only to be used by a suitably
trained and competent person.
The symbols used on this instrument are:
Caution, risk of electric shock
Caution, refer to accompanying
documents
Equipment protected throughout
by Double Insulation (Class II)
~
Alternating current
Direct current
Ground
Measuring voltage which exceeds the limits of the
multimeter may damage the meter and expose the
operator to a shock hazard. Always recognise the
meter voltage limits as stated on the front of the
meter.
AC Accuracy Input Impedance
N / A > 1000MΩ
11MΩ
± 2.0% rdg+4d
10MΩ
Voltage Burden
AC Accuracy
0.2V
± 2.5% rdg+4d
2V
0.2V
2V
± 3.5% rdg+4d
2V
Accuracy
Test Current
± 2.0% rdg+3d < 0.7mA
< 0.13mA
± 1.5% rdg+3d < 13µA
< 1.3µA
< 0.13µA
± 2.5% rdg+3d
± 5.0% rdg+5d
± 10% rdg+2d 0.5mA (Vf = 0.6V)
Test Current
Audible Indication
< approx. 20Ω
< 0.7mA
NOTE
Maximum Input
600VDC or
600VAC rms
Input Protection
0.5A/250V fuse
10A/250V fuse
Input Protection
500VDC or
500VAC rms
500V DC or AC rms
Input Protection
500V DC or AC rms