Sealey MM402.V3 Instructions

Thank you for purchasing a Sealey product. Manufactured to a high standard this product will, if used according to these instructions and properly maintained,
give you years of trouble free performance.
IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS & CAUTIONS. USE THE PRODUCT
CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE DAMAGE AND/OR PERSONAL INJURY AND WILL
INVALIDATE THE WARRANTY. PLEASE KEEP THESE INSTRUCTIONS SAFE FOR FUTURE USE.
1. SAFETY INSTRUCTIONS
1.1. PERSONAL PRECAUTIONS
! When using this multimeter, please observe all normal safety rules concerning:
Protection against the dangers of electric current.
Protection of the meter against misuse.
! Full compliance with safety standards can only be guaranteed if used with the test leads supplied. If necessary, they must be replaced with genuine Sealey
leads with the same electronic ratings. Failure to do so will invalidate the warranty.
" DO NOT use leads if damaged or if the wire is bared in any way.
1.2. GENERAL SAFETY INSTRUCTIONS
! Familiarise yourself with the application and limitations of the multimeter as well as the potential hazards. IF IN ANY DOUBT CONSULT A QUALIFIED ELECTRICIAN.
! When the meter is connected to a circuit, do not touch unused meter terminals.
! When the value scale to be measured is unknown, set the range selector to the highest value if using manual ranging.
! Before rotating the range selector to change functions, disconnect test leads from the circuit under test.
# WARNING! Never perform resistance measurements on live circuits.
! Always be careful when working with voltages above 60Vdc or 30Vac rms. Keep your fingers behind the probe barriers while measuring.
! Before attempting to insert transistors for testing, ensure that test leads have been disconnected.
! Components should not be connected to the transistor socket when making voltage measurement with
the test leads.
! When not in use, store the multimeter carefully in a safe, dry, childproof location. Storage temperature
range - 10 C to 50 C.
O O
2. FEATURES
Auto-ranging multimeter with hi-contrast LCD display, 20mm high digital read-out. Durable case
with protective boot, probe storage and integral two-position stand. Suitable for the toughest
workshop conditions. Includes data hold, relative and audible continuity test. Auto switch off.
Supplied with capped probe test leads.
Layout: (Fig.1.)
1. Range Control 4. AC/DC Current
2. Data Hold 5. Hz/Duty
3. Relative 6. Transistor Test Socket
Measures:
Function
• AC and DC Voltage
DCV/ACV
• AC and DC Current
kHz
• Resistance
Ω /
• Capacitance
µA / mA
• Frequency
nF / µF
• Diode Test
A
• Audible Continuity
µA / mA and A ranges are protected by fuses
• Transistor Test
3. OPERATION
WARNING! Ensure that you read, understand and apply the safety and operational instructions before connecting the multimeter. Only when you are sure
#
that you understand the procedures is it safe to proceed with testing.
Operating temperature range 0
NOTE! WHEN THE FIGURE '1' IS DISPLAYED, IT INDICATES AN OVER-RANGE SITUATION AND A HIGHER RANGE NEEDS TO BE SELECTED.
3.1. Range control button.
3.1.1. Ranges for AC/DC voltage, AC/DC current ( µA and mA only). Resistance can be selected manually or handled by auto-ranging. Push this button as in Fig.2.
to choose range control mode and desired ranges.
Fig.2.
FUNCTION CHANGING
3.2. Data-hold button
3.2.1. Press this button to hold the last reading in the display. The 'HOLD' symbol will appear to show data is held, the display will remain held until you either press
the Data-hold button again or rotate the function switch to another function.
3.3. Relative button
3.3.1. The relative feature allows you to take measurements relative to a stored reference value. A reference voltage, current etc. can be stored and
measurements made in comparison to that value.
3.3.2. To perform a relative measurement, take a standard reading such as voltage; following the procedures in these instructions.
3.3.3. When you have taken your reading, press the relative button to store the reading and the 'REL % % ' indicator will be displayed.
3.3.4. The value displayed is the difference between the stored value and the new measured value.
3.3.5. Press the relative button to return to normal operation.
7. Function Switch
8. V / Ω / Hz Input Jack 11.10A Input
9. COM Input
Red Lead Connection
V Ω
1000V DC or 750V rms AC
V Ω
250V DC or rms AC
/
V Ω
250V DC or rms AC
mA 300mA DC or rms AC
mA 0.3A Fuse Protected
A 10A DC or rms AC
C to 40 C.
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AUTO-RANGING
INSTRUCTIONS FOR:
10 FUNCTION MULTIMETER
MODEL: MM402.V3
10.mA Input
Input Limits
Push button
once.
MANUAL-RANGING
Push button for over 3 seconds
Push button
for less than 1
second
RANGE CHANGED
MM402.V3 - 1 - 090307
Fig.1.