Sealey MM405 User manual

MINI AC/DC CLAMP METER
MODEL NO: MM405
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. KEEP THESE INSTRUCTIONS SAFE FOR FUTURE USE.
1. SAFETY
1.1. PERSONAL PRECAUTIONS
9When using this meter, please observe all normal safety rules concerning:
9Protection against the dangers of electrical current.
9Protection of the meter against misuse.
1.2. GENERAL SAFETY
9Familiarise yourself with the application and limitations of the meter as well as the potential hazards.
9IF IN ANY DOUBT CONSULT A QUALIFIED ELECTRICIAN.
▲USE EXTREME CAUTION when working with high voltages.
9When the magnitude of the value to be measured is unknown, set the range selector to the highest value available.
9Take care when working with voltages above 35V DC or 25V AC rms. These voltages are considered a shock hazard.
9NEVER operate the meter unless the back cover and the battery door is in place and fastened securely.
9If any abnormal readings are observed, the meter must be checked out by an authorised technician.
9When not in use, store the multimeter carefully in a safe, dry, childproof location out of direct sunlight.
9Storage temperature range -20°C to 60°C.
9ALWAYS turn off the power before replacing the battery.
WARNING! NEVER apply current to the meter that exceeds the specified maximum as shown below:
▲WARNING! USE EXTREME CAUTION when working with high voltages.
NOTE: The warnings, cautions and instructions referred to in this manual cannot cover all possible conditions and situations
that may occur. It must be understood that common sense and caution are factors which cannot be built into this product, but must be
applied by the operator.
2. i INTRODUCTION
Durable composite housing with rubber grip around handle for comfort and control. Designed to verify the presence of AC and DC current
and with non-contact voltage detection, with flashlight and non-contact frequency measurement. Perfect for the automotive electrician.
Features a backlit LCD display and an LED light at the front of the unit for working in dark areas. Comes complete with carry case.
3. i SPECIFICATION
Model No: MM405
Clamp size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Opening 18mm approx.
Low Battery Indication . . . . . . . . . . . . . . . . . . . . . . .”BAT” is displayed.
Overange Indication . . . . . . . . . . . . . . . . . . . . . . . . ”OL” is displayed.
Measurements Rate . . . . . . . . . . . . . . . . . . . . . . . . 2 per second, nominal.
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2/3 digits (2400 counts) LCD.
AC Current bandwidth . . . . . . . . . . . . . . . . . . . . . . .50/60Hz (AAC).
Operating Temperature . . . . . . . . . . . . . . . . . . . . . .14 ~ 122°F (10 ~ 50°C).
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . -14 ~ 140°F (-25 ~ 60°C).
Relative Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . 90% (0° - 30°C), 75% (30° - 40°C), 45% (40° - 50°C).
Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating: 3000m, storage 10,000m.
Over Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Category II 600V.
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Two 1.5V “AAA” Batteries.
Original Language Version
© Jack Sealey Limited
Refer to
instruction
manual
Input limits
Function Maximum input
AC Current 200A
DC Current +/-200A
Frequency 1kHz
Electrical shock
hazard
MM405 Issue 3 (H, F) 09/11/18

Auto OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Approx. 7 minutes.
Dimensions/Weight . . . . . . . . . . . . . . . . . . . . . . . . .164x65x32mm/175g.
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . For indoor use and in accordance with Overvoltage Category II
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pollution Degree 2. Category II includes local level,
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .appliance, portable equipment, etc, with transient
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .overvoltage less than Overvoltage Category II.
 Layout:(Refertog.1)
1. Current clamp.
2. Flash light button.
3. Rotary function switch.
4. Data hold and backlight button.
5. LCD display.
6. Clamp trigger.
7. Zero button.
 Display:(Refertog.2)
AC DC ................AC (alternating current) and DC (direct current).
.................Minus sign.
................2400 count (0 to 2400) measurement reading.
AUTO .................AutoRange mode.
HOLD................. Data Hold mode.
BAT ....................Low Battery icon.
Hz% ...................Frequency measurement.
4. OPERATION
WARNING! Read and understand all warnings and precaution statements listed in the safety section
of this operation manual prior to using this meter. Set the function select switch to OFF position
when meter not in use.
4.1. AC Current Measurements.
4.1.1. Set the Function switch to the ACA range.
4.1.2. Pressthetriggertoopenthejaw.Fullyencloseoneconductor(g.3)tobemeasured.
4.1.3. The clamp meter LCD will display the reading.
NOTE: DO NOTenclosemorethanoneconductoratanytime(g.4).
4.2. DC Current Measurements.
4.2.1. Set the Function switch to the DCA range.
4.2.2. Pressthetriggertoopenthejaw.Fullyencloseoneconductor(g.3)tobemeasured.
4.2.3. Press the Zero button to zero the meter in the DCA mode only.
4.2.4. The clamp meter LCD will display the reading.
NOTE: DO NOTenclosemorethanoneconductoratanytime(g.4).
4.3. Frequency Measurements.
4.3.1. Set the rotary function switch to the “Hz” position.
4.3.2. Pressthetriggertoopenthejaws.Fullyencloseoneconductor(g.3)tobemeasured.
4.3.3. Read the frequency on the display.
NOTE: DO NOTenclosemorethanoneconductoratanytime(g.4).
4.4. Data Hold.
4.4.1. To freeze the LCD meter reading, press the data hold button. While data hold is active, the HOLD display icon appears on the LCD.
Press the data hold button again to return to normal operation.
NOTE: The HOLD feature will activate when the Backlight is turned on. Press the hold key again to exit hold.
4.5. Backlight.
4.5.1. The backlight function illuminates the display and is used when the ambient light is low to permit viewing of the displayed reading.
4.6. Zero Button.
4.6.1. For DCA Zero & Offset adjustment.
4.7. Voltage Detection.
4.7.1. Intended to check for the presence of AC voltage, signalling the user with RED LIGHT illuminating between the clamp jaws.
WARNING! The voltage detector is intended to check for the presence of AC voltage, not to prove that a power circuit is dead.
4.8. Flash Light.
4.8.1. Press and hold the red button on the upper side of the meter, this will light the lamp near the clamp and provide illumination on the
work subject.
4.8.2. Release the button and the light will turn off.
4.9. Battery Replacement.
4.9.1. Remove the cross head screw from the battery cover on the rear of the clamp meter.
Original Language Version
© Jack Sealey Limited
Function Range Resolution Accuracy
AC Current 0 - 200A 0.1A ±(3.0% reading + 8 digits)
DC Current 0 - ±200A 0.1A ±(2.8% reading + 8 digits)
Frequency
(Auto-ranging)
40-51Hz 0.01Hz ±(1.2% reading + 5 digits)
Input sensitivity: 2.5A AC RMS min
51-510Hz 0.1Hz
0.51 - 1kHz 0.001Hz
fig.2
fig.1
MM405 Issue 3 (H, F) 09/11/18

4.9.2. Open the battery compartment.
4.9.3. Replace the two AAA batteries.
4.9.4. Re-assemble the meter.
Original Language Version
© Jack Sealey Limited
fig.4 fig.3
Sealey Group, Kempson Way, Suffolk Business Park, Bury St Edmunds, Suffolk. IP32 7AR
01284 757500 01284 703534 [e-mail] www.sealey.co.uk
ENVIRONMENT PROTECTION
Recycle unwanted materials instead of disposing of them as waste. All tools, accessories and packaging should be sorted, taken to
a recycling centre and disposed of in a manner which is compatible with the environment. When the product becomes completely
unserviceable and requires disposal, drain any fluids (if applicable) into approved containers and dispose of the product and fluids
according to local regulations.
Note: It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts without prior
notice.
Important: No Liability is accepted for incorrect use of this product.
Warranty: Guarantee is 12 months from purchase date, proof of which is required for any claim.
WEEE REGULATIONS
Dispose of this product at the end of its working life in compliance with the EU Directive on Waste Electrical and Electronic Equipment
(WEEE). When the product is no longer required, it must be disposed of in an environmentally protective way. Contact your local solid
waste authority for recycling information.
BATTERY REMOVAL - SEE SECTION 1.2
Under the Waste Batteries and Accumulators Regulations 2009, Jack Sealey Ltd are required to inform potential purchasers of products
containing batteries (as defined within these regulations), that they are registered with Valpak’s registered compliance scheme. Jack
Sealey Ltd Batteries Producer Registration Number (BPRN) is BPRN00705.
MM405 Issue 3 (H, F) 09/11/18