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Specification
MM94 TRMS Digital Multimeter

Temperature

 (Type 

Thermocouple)

Range

Resolution

Accuracy

0°C to 400°C

0.1°C

1.0% + 1°C

-50°C to 0°C, 400°C to 1300°C

2.0% + 3°C

32°F to 750°F

0.1°F

1.0% + 2°F

-58°F to 32°F, 750°F to 2372°F

2.0% + 6°F

Overload protection: 30V DC or AC rms

Continuity

Range

Resolution

Response 

time

Open 

circuit 

voltage

Audible 

indication

600

:

0.01

:

100 ms 
approx.

-3.0V dc

<40

:

Overload protection: 600V DC or AC rms

Diode Test

Range Resolution

Test 

current

Open 

circuit 

voltage

Audible 

indication

Accuracy

2V

0.1 mV

0.5 mA 

typical

3.0V dc 

typical

<0.05V dc

2.0% + 10

Overload protection: 600 V DC or AC rms

GENERAL

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

Low battery indication: The LCD will display 

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

Includes: TL16 test leads, TT1P Type K thermocouple, 9V PP3 battery (installed), 

instructions

ENVIRONMENTAL

Temperature & Humidity (Operating): 0°C to 50°C <70% R.H.

(Storage):   -20°C to 60°C < 80% R.H.

Altitude: up to 2000m 

Pollution degree: 2, indoor use

SAFETY  

Conforms to BS EN 61010-1, BS EN 61010-2-033, CAT IV 600V, CAT III 1000V

Class II, double insulation  

EMC

Conforms to BS EN 61326-1

Specification
MM94 TRMS Digital Multimeter

SPECIFICATION FOR TL16 TEST LEADS

Maximum voltage: 1000V AC/DC

Maximum current: 10A continuous

Connector: 4mm banana plug with fixed shroud

Environmental

Temperature (Operating & Storage):   0°C to 40°C

Altitude: up to 2000m

Pollution degree: 2

Safety 

Conforms to BS EN 61010-031,  

  CAT IV 600V, CAT III 1000V, 10A (Probe tip caps fitted)

  CAT II 1000V, 10A (Probe tip caps removed)

Class II, double insulation

Specification
MM94 TRMS Digital Multimeter

 17th Edition Testers

 Accessories

 

Calibration Equipment

 Continuity Testers

 Electricians’ Kits

 Environmental Products

 Full Calibration & Repair Service

 Fuse Finders

 Digital Clamp Meters

 Digital Multimeters

 Labels

 Microwave Leakage Detectors

 Motor Maintenance Equipment

 Multifunction Testers

 Non-trip Loop Testers

 Pat Testers & Accessories

 Phase Rotation Testers

 Proving Units

 Socket Testers

 Thermometers & Probes

 Test Leads

 Voltage Indicators

 Specialist Metrohm Testers (4 & 5kV)

 Specialist Drummond Testers

Check out what else you can get from Martindale:

Martindale Electric Company Limited

 

Tel: +

Metrohm House, Imperial Park, Imperial Way, 

Watford, Hertfordshire, WD24 4PP, UK

T: +

44 (0)1923 441717  Fax: +44 (0)1923 446900

E-mail:sales@martindale-electric.co.uk

 

Website: www.martindale-electric.co.uk

© 2016 Martindale Electric Company Ltd.

Registered in England No. 3387451. Rev1 LITMM94

Summary of Contents for MM94

Page 1: ...Measurements 15 3 24 Continuity Testing 15 3 25 Diode Testing 16 4 Maintenance 16 4 1 Battery Replacement 16 4 2 Fuse Replacement 17 4 3 Test Lead Replacement 17 4 4 Calibration 17 4 5 Cleaning 18 4 6 Repair Service 18 4 7 Storage Conditions 18 5 Warranty 19 Measurement Categories 20 Specifications 1 1 SAFETY INFORMATION Always read before proceeding REMEMBER SAFETY IS NO ACCIDENT These instructio...

Page 2: ...th CAT III and CAT II installations up to 1000V to earth and within the operating temperature and humidity range specified The CAT III 1000V marking does not mean the clamp meter can be used to 1000V AC rms but that it will be safe to the user if inadvertently connected across a voltage up to 1000V AC rms to earth If the removable probe tip caps are not fitted to the probes of the test leads their...

Page 3: ... of LCD Symbols 7 HFR1 High frequency reject 1 kHz selected HFR 2 High frequency reject 100 kHz selected RANGE Manual ranging is selected MAX Maximum indication is displayed MIN Minimum indication is displayed HOLD Display hold is activated P Indicates peak measurement P Indicates peak measurement REL Relative function selected Indicates 30V at input terminals AC Indicates AC measurement DC Indica...

Page 4: ...ions connect the test leads to the circuit being measured and read the measured ac voltage from the display 11 3 15 DC Voltage Measurements Connect the black test lead to the COM terminal and the red test lead to the terminal Set the rotary switch to the or position as required Taking all necessary safety precautions connect the test leads to the circuit being measured and read the measured dc vol...

Page 5: ... if d600 15 3 25 Diode Testing If the diode to be tested is in circuit be sure the circuit power is switched off Connect the black test lead to the COM terminal and the red test lead to the terminal Set the rotary switch to the position Press the SHIFT button twice The LCD will display the symbol Taking all necessary safety precautions connect the test leads to the diode being tested If the diode ...

Page 6: ...ered neglected contaminated or damaged by accident or abnormal conditions of operation handling or storage Martindale authorised resellers shall extend this warranty on new and unused products to end user customers only but have no authority to extend a greater or different warranty on behalf of Martindale Martindale s warranty obligation is limited at Martindale s option to refund of the purchase...

Page 7: ...range Crest factor 3 at full scale 6 at half scale Peak hold accuracy on AC current ranges 45Hz to 500 Hz 3 5 rdg 500 dts Peak hold response time 1ms Input protection 0 5 A 1000 V fast blow ceramic fuse on 600μA to 400mA ranges 20A 600V fast blow ceramic fuse on 20 A range Note 1 Apply currents 10 A for 30 seconds maximum then allow a 10 minute cooling period Specification MM94 TRMS Digital Multim...

Page 8: ...0 R H Altitude up to 2000m Pollution degree 2 indoor use SAFETY Conforms to BS EN 61010 1 BS EN 61010 2 033 CAT IV 600V CAT III 1000V Class II double insulation EMC Conforms to BS EN 61326 1 Specification MM94 TRMS Digital Multimeter SPECIFICATION FOR TL16 TEST LEADS Maximum voltage 1000V AC DC Maximum current 10A continuous Connector 4mm banana plug with fixed shroud Environmental Temperature Ope...

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