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Martindale MM94 True RMS Digital Multimeter

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  • Advanced multimeter with multiple electrical measurement parameters
  • True RMS measurement on AC+DC volts and AC current
  • Measure temperature via supplied type-K thermocouple

rrp £189.00

now £149.00 (Ex. VAT) £178.80 (Inc. VAT)

rrp £189.00

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  • Description

    Martindale MM94 True RMS Digital Multimeter

    The Martindale MM94 True RMS Digital Multimeter measures a wide range of electrical parameters plus temperature measurement, continuity testing and diode testing. It measures DC voltage up to 1000V with a maximum resolution of 0.01mV whereas AC voltage is measured between 0 and 750V with 0.01mV maximum resolution. The multimeter is also capable of True RMS AC+DC voltage measurement.

    For AC/DC current, there is a 0 to 20A measurement range with max resolution of 0.01µA whilst resistance can be measured up to 60MΩ. Conductance (60nS), capacitance (6mF), and frequency (10MHz) round out the Martindale MM94’s electrical measurement capabilities and it also able to perform duty cycle measurement. Temperature can be measured via a type-K thermocouple making the meter suitable for a wider range of applications. All parameters benefit from multiple ranges and resolutions in addition to a high degree of accuracy.

    The measurement functions are selected using a clearly-labelled dial and the Martindale MM94 has min/max and peak measurement functions plus a high frequency filter and true RMS measurement. The 60,000 count backlit display shows all readings and features an analogue bar graph to show fluctuations dynamically.

    The Martindale MM94 is safety rated as Cat IV 600V and Cat III 1000V and it has a battery life of roughly 50 hours. Test leads, a type-K thermocouple and batteries are included with the multimeter on delivery.

    Martindale part number: MARMM94

    Key Features

    • DC voltage: 1000V
    • AC voltage: 750V
    • AC/DC current: 20A
    • Resistance: 60MΩ
    • Conductance: 60nS
    • Capacitance: 6mF
    • Frequency: 10MHz
    • Duty cycle: 5% to 95%
    • Temperature measurement via thermocouple
    • Continuity test
    • Diode test
  • Specification

    DC Volts

    • Max. range: 1000V
    • Max. resolution: 0.01mV
    • Accuracy: 0.08% + 5

    AC Volts

    • Max. range: 750V
    • Max. resolution: 0.01mV
    • Accuracy: 2% + 20

    AC/DC Current

    • Max. range: 20A*
    • Max. resolution: 0.01µA
    • Best accuracy: 0.5% + 10 (DC)
    *30s measurement must be followed by 10 minute rest period


    • Max. range: 60MΩ
    • Max. resolution: 0.01Ω
    • Best accuracy: 0.3% + 20


    • Max. range: 60nS
    • Max. resolution: 0.01nS
    • Accuracy: 1% + 10


    • Max. range: 6mF
    • Max. resolution: 0.001nF
    • Accuracy: 3% + 10


    • Max. range: 10MHz
    • Max. resolution: 0.001Hz
    • Accuracy: 0.1% + 10

    Duty Cycle

    • Max. range: 5% to 95%
    • Resolution: 0.1%
    • Accuracy: 2% + 10


    • Max. range: -50˚C to 1300˚C
    • Resolution: 0.1˚C
    • Best accuracy: 1% + 1˚C


    • Range: 600Ω
    • Resolution: 0.01Ω


    • Range: 2V
    • Resolution: 0.1mV
    • Accuracy: 2% + 10


    • Display: Liquid crystal display; digital, 60000 counts, updates 2/sec
    • Polarity: Automatic, positive implied, ‘-‘ for negative polarity indication
    • Overrange: (OL) or (-OL) is displayed
    • Bar-graph, 60 segments, updates 20/sec
    • Power: 9V, PP3 alkaline batteries (IEC 6LR61, NEDA 1604A)
    • Battery life: 50 hours typical with alkaline
    • Auto power off: After 30 minutes
    • Fuses: 0.5 A/1000V 6.3x32mm fast blow ceramic fuse; 20 A/ 600V 10x38mm fast blow ceramic fuse
    • Dimensions: 198 x 90 x 44mm
    • Weight: Approx. 400g, including battery


    • Temperature & Humidity (Operating): 0°C to 50°C <70% R.H.
    • Temperature & Humidity (Storage): -20°C to 60°C < 80% R.H.
    • Altitude: Up to 2000m
    • Pollution degree: 2, indoor use


    • Conforms to BS EN 61010-1, BS EN 61010-2-033, CAT IV 600V, CAT III 1000V 
    • Class II, double insulation


    • Conforms to BS EN 61326-1
  • Supplied Accessories

    • Martindale MM94 True RMS Digital Multimeter 
    • TL16 test leads
    • TT1P Type K thermocouple 
    • 9V PP3 battery (installed)
    • Instructions
  • Product Documents

    Product Attachments

    View FileMartindale MM94 Datasheet    Size: (75.2 KB)
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