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Sealey MM03 Manual
Sealey MM03 Manual

Sealey MM03 Manual

10-function touchscreen rechargable auto-ranging digital smart multimeter

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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.
Refer to
Electrical shock
hazard
instructions
1. SAFETY
1.1.
GENERAL SAFETY
Perform a risk assessment of tasks to be carried out before using the meter.
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Measurement category III is for the measurements performed on circuits directly connected to the low voltage installation. This meter
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has been designed according to IEC-61010-1 concerning electronic measuring instruments with an overvoltage category (CAT III 600V)
and pollution degree 2.
Please ensure that these guidelines are followed to guarantee the optimal performance and safety of our meter and the user.
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Follow all safety and operating instructions to ensure the meter is used safely and is kept in good condition. With proper use and care,
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your digital multimeter will give you years of satisfactory service.
When using this multimeter, please observe all normal safety rules concerning protection against the dangers of electrical current, and
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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
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with genuine Sealey leads and/or those with the same electrical ratings. Failure to do so will invalidate the warranty.
DO NOT use leads if damaged or if the wires are bared in any way. DO NOT carry meter by the probes or their leads.
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DO NOT remove back cover. This item does not contain any serviceable components.
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1.2.
SAFETY
NEVER exceed the protection limit indicated in the specifications for each range of measurement.
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NEVER use the meter to measure voltages that might exceed 600V above earth ground in category III installations.
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Always be careful when working with voltages above 60V dc or 30V ac rms. Keep fingers behind the probe barriers while measuring.
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DO NOT perform resistance measurements on live circuits.
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Inspect test leads and probes for cracks, breaks or crazes in the insulation before using the meter.
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Familiarise yourself with the application and limitations of the multimeter as well as the potential hazards.
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This meter is designed to be used outdoors in dry conditions in accordance with Overvoltage Category III and Pollution Degree 2.
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IF IN ANY DOUBT CONSULT A QUALIFIED ELECTRICIAN.
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WARNING! USE EXTREME CAUTION WHEN WORKING WITH HIGH VOLTAGES.
DO NOT position the equipment so it is difficult to disconnect the probes.
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When the meter is connected to a circuit, DO NOT touch unused meter terminals.
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When the magnitude of the value to be measured is unknown, set the range selector to the highest value available.
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Before commencing testing, follow instructions below and select the correct input sockets, function and range on the multimeter.
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Before changing functions, disconnect the test leads from the circuit under test.
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Take care when working with voltages above 35V DC or 25V AC RMS. These voltages are considered a shock hazard.
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Keep fingers behind the probe barriers whilst measuring.
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DO NOT test voltages above 600V - the circuitry of the multimeter may be destroyed.
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WARNING! NEVER connect the multimeter to a voltage source / live circuit when the rotary switch is set to any other function apart
from voltage testing.
WARNING! NEVER perform resistance, transistor, diode or continuity measurements on live circuits.
Always discharge filter capacitors in power supplies and disconnect the power when making resistance or diode tests.
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WARNING! Voltage checks on electrical outlets can be difficult and misleading because of the uncertainty of connection to the recessed
electrical contacts. Other means should be used to ensure that the terminals are not "live".
DO NOT use the multimeter in a potentially explosive atmosphere.
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DO NOT operate the meter unless the back cover are in place and fastened securely.
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If any abnormal readings are observed, the multimeter must be checked out by an authorised technician.
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When not in use, store the multimeter carefully in a safe, dry, childproof location out of direct sunlight. Storage temperature range is
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-10 to 60°C (14°F to 140°F)
The user shall ensure that test probes are correctly selected in order to prevent danger. Probes shall be selected to ensure that
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adequate barriers guard against inadvertent hand contact with live conductors under test and that probes have minimal exposed probe
tips. Where there is a risk of the probe tip short circuiting with other live conductors under test, it is recommended that the exposed tip
length shall not exceed 4mm. If there is a hot item or surface near the test area, ensure suitable PPE is used to protect body parts.
NOTE: The warnings, cautions and instructions referred to in this manual cannot cover all possible conditions/situations that may occur.
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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.
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WARNING!: When Low Battery symbol
© Jack Sealey Limited
10-FUNCTION TOUCHSCREEN
RECHARGABLE AUTO-RANGING DIGITAL
SMART MULTIMETER
MODEL NO:
Keep in dry area
Caution before
protect from rain
and during
connection
appears recharge immediately. Low battery can cause incorrect readings.
Original Language Version
MM03
MM03
Issue 2 (3)
06/05/25

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Summary of Contents for Sealey MM03

  • Page 1 MM03 MODEL NO: 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.
  • Page 2 DC VOLTAGE Maximum Input Voltage: 600V DC RMS Minimum Measurable Voltage: 0.75V DC In smart mode, press the SEL key to switch to auto-ranging mode. 3.2.2. AC VOLTAGE MM03 Issue 2 (3) 06/05/25 Original Language Version © Jack Sealey Limited...
  • Page 3 Overload Protection: 250V DC/AC 3.2.5. DC CURRENT Overload Protection: 250V/10A fuse Maximum Measuring Current: 10A 3.2.6. AC CURRENT Overload Protection: 250V/10A fuse Maximum Measuring Current: 10A 3.2.7. TEMPERATURE MEASUREMENT (K-TYPE PROBE) MM03 Issue 2 (3) 06/05/25 Original Language Version © Jack Sealey Limited...
  • Page 4 Overload Protection: 250V DC/AC 3.2.9. DIODE Overload Protection: 250V DC/AC 3.2.10. FREQUENCY Input Sensitivity: 1.5V RMS; Overload Protection: 250V DC or AC peak (not exceeding 10 seconds) for frequency measurement MM03 Issue 2 (3) 06/05/25 Original Language Version © Jack Sealey Limited...
  • Page 5 SEL Button (Function Select and Switch Button) COM Input Terminal VRHZ-II - Red Probe Input Terminal Data Hold and Work light NCV and LIVE Button Current Input Terminal Fig.1 MM03 Issue 2 (3) 06/05/25 Original Language Version © Jack Sealey Limited...
  • Page 6 After powering on, the meter will automatically switch to “Auto” automatic measurement mode. Press the SEL button to switch to capacitance measurement mode. 4.9.2. Connect the black test lead to the COM input jack and the red test lead to the VRHZ-II- input jack. MM03 Issue 2 (3) 06/05/25 Original Language Version © Jack Sealey Limited...
  • Page 7 PURCHASE HERE Sealey Group Jack Sealey (EU) Ltd t/a Sealey Group, Farney Street, Carrickmacross, Co. Monaghan, A81 PK68 Ireland Jack Sealey Ltd t/a Sealey Group, Kempson Way, Suffolk Business Park, Bury St Edmunds, Suffolk, IP32 7AR UK 01284 757500 sales@sealey.co.uk www.sealey.co.uk...