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ennoLogic eM870M User Manual

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eM870M Insulation Multimeter
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Summary of Contents for ennoLogic eM870M

  • Page 1 Insulation Multimeter User Manual...
  • Page 2 Insulation Multimeter Made in China User Manual Version 1.1. Revised 1/5/2018. ® © 2018 ennoLogic . All rights reserved. https://ennologic.com...

  • Page 3: Table Of Contents

    Insulation Multimeter Table of Contents Table of Contents 1. Precautionary Safety Measures........................1 1.1 Important Note: Limited Liability ..........................1 1.2 Meter Safety Standards ............................... 1 1.3 Warnings ..................................2 2. Instrument Description .............................4 2.1 Features Overview ..............................4 2.2 Main User Elements ..............................
  • Page 4 Insulation Multimeter Table of Contents 3.1.5 Low Battery Voltage Detection ............................15 3.1.6 Backlight ................................... 15 3.1.7 Data Hold ..................................15 3.2 Measurement Functions ............................16 3.2.1 AC Voltage Measurement ..............................16 3.2.2 DC Voltage Measurement ..............................18 3.2.3 DC mV/AC mV Measurement ............................
  • Page 5 Insulation Multimeter Table of Contents 4. Technical Specifications ..........................37 4.1 General Specifications .............................. 37 4.2 Measurement Specifications ............................. 38 4.2.1 AC Voltage ..................................38 4.2.2 DC Voltage ..................................38 4.2.3 AC Current ..................................39 4.2.4 DC Current ..................................39 4.2.5 Resistance ..................................
  • Page 6 Insulation Multimeter Table of Contents 5. Maintenance ..............................42 5.1 General Maintenance ..............................42 5.1 Battery Replacement ..............................42 5.2 Fuse Replacement ..............................43 6. Accessories................................44...

  • Page 7: Precautionary Safety Measures

    1.2 Meter Safety Standards The insulation multimeter eM870M was designed and manufactured according to the safety requirements specified in the IEC61010-1 standard for electronic test instruments and hand-held digital multimeters. Its design and manufacturing comply with Measurement Category 1000V CAT III of IEC 61010-1 and Pollution Degree 2.

  • Page 8: Warnings

    Insulation Multimeter Precautionary Safety Measures 1.3 Warnings  Before first use of the meter please check if the housing shows any cracks or if any plastic parts are missing, and check whether the test leads are damaged or have any exposed metal. The meter must be used only if there are no problems or damage affecting insulation.
  • Page 9 Insulation Multimeter Precautionary Safety Measures  Do not attempt to measure voltages above 1000V AC or 1000V DC, the meter may get damaged and/or the operator’s safety may be threatened if the maximum limit for voltage measurements is exceeded.

  • Page 10: Instrument Description

    Insulation Multimeter Instrument Description 2. Instrument Description 2.1 Features Overview  5000 counts digital display  AC Voltage and DC Voltage measurements up to 1000V  DC measurement accuracy as low as 0.1%  High resolution: resistance 0.1Ω, voltage 10µV ...

  • Page 11: Main User Elements

    Insulation Multimeter Instrument Description 2.2 Main User Elements The front panel is shown in Figure 2-1, and its user elements are described below: Hz/Duty LIGHT MAX/MIN HOLD RANGE BEEP ON/OFF Figure 2-1 1000V Insulation Insulation+DMM mA uA 500mA MAX...
  • Page 12 Insulation Multimeter Instrument Description Terminal Connection terminal for the red (positive) test lead for all measurement functions except for current measurement and insulation resistance measurement. Hereinafter referred to as V terminal. (2) COM Terminal Connection terminal for the black (common reference) test lead for all measurements except for insulation resistance measurement.
  • Page 13 Insulation Multimeter Instrument Description (6) POWER Switch Press this switch to turn the meter on and off. (7) SELECT Key  When the rotary switch is set to position mV, µA, or mA, press the SELECT key to select either DC or AC mode.
  • Page 14 Insulation Multimeter Instrument Description Press a fourth time and the LCD will display the Average Value. To return to normal measurement mode, press and hold this button for two seconds. (9) Hz/Duty Key  When the rotary switch is set to position Hz / Temperature, pressing the HZ/DUTY key will switch between frequency and duty cycle measurement mode.
  • Page 15 Insulation Multimeter Instrument Description For V~, V , mV, , , A and mA measurements, the RANGE key is used to manually select ranges:  1. Press RANGE to enter the manual ranging mode. 2. Press RANGE to step through the ranges available for the selected function.

  • Page 16: Lcd Display

    Insulation Multimeter Instrument Description 2.3 LCD Display Figure 2—2...
  • Page 17 Insulation Multimeter Instrument Description The LCD screen is shown in Figure 2-2 above, and the meanings of the symbols are explained in Table 1 below: Number of Order Symbol Functions Indicates the measurement unit being either °F or °C for temperature, or µF µn°F°C...
  • Page 18 Insulation Multimeter Instrument Description Table 1 (continued) Indicates negative readings Indicates overload condition when measuring insulation resistance The meter is in Auto range mode in which the meter automatically AUTO RANGE selects the range with the best resolution.

  • Page 19: Function Descriptions

    Insulation Multimeter Function Descriptions 3. Function Descriptions 3.1 General Functions 3.1.1 TRUE RMS Measurement All AC measurement values are true RMS (true root-mean-square) values. This distinguishes this meter from other meters that only measure average AC values. 3.1.2 Manual ranging and auto range mode The Meter has both manual ranging and auto range options.

  • Page 20: Maximum, Minimum And Average Value Measurements

    Insulation Multimeter Function Descriptions To enter and exit manual ranging mode: 1. Press the RANGE key. The meter enters manual ranging mode. The LCD symbol “AUTO RANGE” changes to “MANUAL RANGE”. Each press of the RANGE key increments the range, and the display shows the maximum value for the selected range next to the symbol “MANUAL RANGE”.

  • Page 21: Automatic Shutdown

    Insulation Multimeter Function Descriptions 3.1.4 Automatic Shutdown The Meter enters "Sleep mode" and blanks the display if the Meter is on but not used for 15 minutes. The meter will not automatically shut down while in insulation resistance measurement mode. If you want the meter to operate continuously without automatically turning off, press and hold the SELECT key when pressing the POWER switch to turn the unit on.

  • Page 22: Measurement Functions

    Insulation Multimeter Function Descriptions 3.2 Measurement Functions 3.2.1 AC Voltage Measurement To measure AC voltages, set up the meter as shown in Figure 3-1: 1. Turn on the power switch and set the rotary switch to position 2. Connect the red and black test leads to the V and COM terminals respectively.
  • Page 23 Insulation Multimeter Function Descriptions AC Voltage Measurement Warning Do not attempt to MAX/MIN Hz/Duty LIGHT measure voltages RANGE BEEP HOLD ON/OFF above 1000V! 1000V Insulation Insulation+DMM mA uA CAT II 1000V 500mA MAX CAT III 600V INSULATION...

  • Page 24: Dc Voltage Measurement

    Insulation Multimeter Function Descriptions 3.2.2 DC Voltage Measurement To measure DC voltages, set up the meter as shown in Figure 3-2: 1. Turn on the power switch and set the rotary-table switch to position 2. Connect the red and black test leads to the V and COM terminals respectively.
  • Page 25 Insulation Multimeter Function Descriptions DC Voltage Measurement Warning Do not attempt to measure voltages MAX/MIN Hz/Duty LIGHT HOLD RANGE BEEP ON/OFF above 1000V! 1000V Insulation Insulation+DMM mA uA CAT II 1000V 500mA MAX CAT III 600V INSULATION...

  • Page 26: Dc Mv/Ac Mv Measurement

    Insulation Multimeter Function Descriptions 3.2.3 DC mV/AC mV Measurement To measure small DC and AC voltages up to 500mV, set up the meter as shown in Figure 3-3: 1. Turn on the power switch and set the rotary switch to position 2.
  • Page 27 Insulation Multimeter Function Descriptions DC mV / AC mV Measurement MAX/MIN Hz/Duty LIGHT HOLD RANGE BEEP ON/OFF 1000V Insulation Insulation+DMM mA uA CAT II 1000V 500mA MAX CAT III 600V INSULATION Figure 3-3...

  • Page 28: Frequency & Duty Cycle Of Digital Signals And Temperature Measurements

    Insulation Multimeter Function Descriptions 3.2.4 Frequency & Duty Cycle of Digital Signals and Temperature Measurements To measure the frequency or duty cycle of a digital signal, set up the meter as shown in Figure 3-4. Please note that the peak to peak voltage of the digital signal must be between 2.5V and 5V, its frequency in the range of 5Hz ~ 2MHz, and its duty cycle...
  • Page 29 Insulation Multimeter Function Descriptions Frequency & Duty Cycle of Digital Signals and Temperature Measurements Hz/Duty MAX/MIN LIGHT BEEP HOLD RANGE ON/OFF 1000V Insulation Insulation+DMM mA uA Figure 3-4 500mA MAX CAT II 1000V CAT III 600V INSULATION...

  • Page 30: Diode And Continuity Tests

    Insulation Multimeter Function Descriptions 3.2.5 Diode and Continuity Tests To test a diode outside of a circuit, or test for continuity, set up the meter as shown in Figure 3-5: 1. Turn on the power switch and set the rotary switch to position 2.
  • Page 31 Insulation Multimeter Function Descriptions Diode and Continuity Tests MAX/MIN Hz/Duty LIGHT HOLD RANGE BEEP ON/OFF 1000V Insulation Insulation+DMM mA uA Figure 3-5 CAT II 1000V 500mA MAX CAT III 600V INSULATION...

  • Page 32: Resistance Measurement

    Insulation Multimeter Function Descriptions 3.2.6 Resistance Measurement To measure resistance, set up the meter as shown in Figure 3-6: 1. Turn on the power switch and set the rotary switch to position 2. Connect the red and black test leads to the V and COM terminals respectively.
  • Page 33 Insulation Multimeter Function Descriptions Resistance Measurement MAX/MIN Hz/Duty LIGHT HOLD RANGE BEEP ON/OFF 1000V Insulation Insulation+DMM mA uA CAT II 1000V 500mA MAX CAT III 600V INSULATION Figure 3-6...

  • Page 34: Capacitance Measurement

    Insulation Multimeter Function Descriptions 3.2.7 Capacitance Measurement To measure capacitance, set up the meter as shown in Figure 3-7: 1. Turn on the power switch and set the rotary switch to position 2. Connect the red and black test leads to the V and COM terminals respectively.
  • Page 35 Insulation Multimeter Function Descriptions Capacitance Measurement Warning To avoid electrical shock and/or damage to the instrument, disconnect the circuit power and discharge all MAX/MIN Hz/Duty LIGHT RANGE BEEP HOLD high-voltage capacitors before ON/OFF measuring capacitance. Use the DC voltage function to confirm that the capacitor is discharged.

  • Page 36: Dc And Ac Μa Current Measurement

    Insulation Multimeter Function Descriptions 3.2.8 DC and AC μA Current Measurement To measure small DC and AC currents up to 5000µA, set up the meter as shown in Figure 3-8: 1. Turn on the power switch and set the rotary switch to position 2.
  • Page 37 Insulation Multimeter Function Descriptions DC µA AC µA Measurement MAX/MIN Hz/Duty LIGHT RANGE BEEP HOLD ON/OFF 1000V Insulation Insulation+DMM mA uA CAT II 1000V CAT III 600V INSULATION Figure 3-8...

  • Page 38: Dc And Ac Ma Current Measurement

    Insulation Multimeter Function Descriptions 3.2.9 DC and AC mA Current Measurement To measure DC and AC currents in the mA range of 0.01mA ~ 500mA, set up the meter as shown in Figure 3-9: 1. Turn on the power switch and set the rotary switch to position 2.
  • Page 39 Insulation Multimeter Function Descriptions DC mA AC mA Measurement Hz/Duty MAX/MIN LIGHT HOLD RANGE BEEP ON/OFF 1000V Insulation Insulation+DMM mA uA CAT II 1000V CAT III 600V INSULATION Figure 3-9...

  • Page 40: Insulation Resistance Measurement

    Insulation Multimeter Function Descriptions 3.2.10 Insulation Resistance Measurement To measure insulation resistance, set up the meter as shown in Figure 3-10: 1. Turn on the power switch and set the rotary switch to position 2. Connect the red and black test leads to the INS and mA/µA terminals respectively. (NOT to the COM terminal!) 3.
  • Page 41 Insulation Multimeter Function Descriptions Insulation Resistance Measurement Warning When using this function, the MAX/MIN Hz/Duty LIGHT meter generates a high voltage of RANGE BEEP HOLD up to 1000V! Do not touch the ON/OFF leads or probes when the test is...

  • Page 42: Frequency Measurement Of Sinusoidal Signals

    Insulation Multimeter Function Descriptions 3.2.11 Frequency Measurement of Sinusoidal Signals To measure the frequency of sinusoidal signals, set up the meter as shown in Figures 3-1, 3-3, 3-8 or 3-9. The measurement range is 5Hz～200KHz: When measuring AC voltages or AC currents, it is possible to measure and display the frequency of the signal by pressing the Hz/Duty key.

  • Page 43: Technical Specifications

    Insulation Multimeter Technical Specifications 4. Technical Specifications 4.1 General Specifications • Maximum voltage between terminals and earth ground: 1000V AC rms or 1000V DC. • Measurement Category 1000V CAT III of IEC 61010-1 and Pollution Degree 2. •...

  • Page 44: Measurement Specifications

    Insulation Multimeter Technical Specifications 4.2 Measurement Specifications The accuracies listed below are guaranteed within one year of use under normal operating conditions at temperatures between 18°C and 28°C (64°F and 82°F) and a relative humidity of less than 80%. The accuracy is stated as: ± (xx % of reading + x number of lower digits).

  • Page 45: Ac Current

    Insulation Multimeter Technical Specifications 4.2.3 AC Current Accuracy Range Resolution Voltage Drop 40Hz~400Hz 0.1μA ±(0.8% +4) 500μA 102µV/µA 1μA 5000μA ±(0.8% +4) ±(0.8% +4) 50mA 10μA 1.5mV/mA 500mA 0.1mA ±(0.8% +4) Notes: above accuracies can be guaranteed within 10% ~ 100% of the full range 4.2.4 DC Current...

  • Page 46: Capacitance

    Insulation Multimeter Technical Specifications 4.2.6 Capacitance Range Resolution Accuracy ±(2.5% +10) 50nF 0.01nF 500nF 0.1nF ±(2.5% +10) ±(2% +10) 5μF 50μF 10nF ±(2% +10) ±(2% +10) 500μF 0.1μF ±(3% +10) 1000μF 1μF Notes: above accuracies can be guaranteed over the full range for film capacitors or capacitors of better quality 4.2.7 Diode...

  • Page 47: Duty Cycle

    Insulation Multimeter Technical Specifications 500V 1000V 400V 5000μA 500mA 100mA Notes: The accuracy will be reduced for signals with low voltage or low frequency. 4.2.11 Duty Cycle Frequency Range Duty Cycle Range Resolution Accuracy 5Hz～500KHz 0.01% ±0.02% 5%～95% 4.2.12 Insulation Resistance...

  • Page 48: Maintenance

    Insulation Multimeter Maintenance 5. Maintenance This section provides basic maintenance information, including fuse and battery replacement instructions. Do not attempt to repair or service your meter unless you are qualified to do so and have the relevant calibration, performance test, and service information.

  • Page 49: Fuse Replacement

    Insulation Multimeter Maintenance Remove the battery cover from the meter. If you are replacing the batteries: remove the used AAA batteries. Install six new AAA batteries. Pay attention to polarity when you insert each battery, the polarity is indicated inside the battery compartment.

  • Page 50: Accessories

    Insulation Multimeter Accessories 6. Accessories Package Contents: • Insulation Multimeter eM870M • 1x Pair of test leads with probes • 1x Pair of test leads with alligator clips • 1x Thermocouple Probe • 6x AAA Batteries • User Manual •...
  • Page 52 PO Box 25207 Eugene, OR 97402...

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