TRIPLETT MM870 Industrial Grade Digital Multimeter User Manual

: June 17, 2024
: TRIPLETT

Table of Contents

TRIPLETT MM870 Industrial Grade Digital Multimeter
Product Usage Instructions
Introduction
Safety
Safety Instructions
Meter Description
Symbols and Annunciators
0perating Instructions
Replacing the Batteries
Replacing the Fuses
Specifications
Warranty
Documents / Resources
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)

TRIPLETT MM870 Industrial Grade Digital Multimeter

TRIPLETT-MM870-Industrial-Grade-Digital-Multimeter-
product

Specifications

Model: MM870 Industrial TRMS Digital Multimeter
Accuracy: 0.1% ± 0.05%
Low Pass Filter: Range 1000V (50-60Hz), ±(1.0% + 20); >3kHz (-3 dB)
Compliance: EN61010-1:2010, EN61010-031:2015, EN61010-2-033:2012
Measurement Categories: Category IV 600V, Category III 1000V, Pollution Degree 2

Product Usage Instructions

Power On/Off

Press the power button to turn on the multimeter.
To turn it off, press and hold the power button until the display goes off.

Selecting Measurement Function

Rotate the dial to select the desired measurement function such as voltage, current, resistance, etc.

Taking Measurements

Connect the test leads to the appropriate terminals based on the measurement being taken.
Ensure proper polarity and range selection.

Reading Measurements

The measured value will be displayed on the screen.
Take note of the decimal point and units for accurate readings.

Auto Power Off:

If there is no activity for a set period, the multimeter will automatically power off to conserve battery.

Frequently Asked Questions (FAQ):

Q: What do the measurement categories mean?

A : The categories indicate the maximum voltage levels that the multimeter can safely measure within specific environments.
Category IV is for main supply lines, while Category III is for distribution panels.

Q: How do I ensure accurate measurements?

A : Always use the correct input jacks, select the appropriate range, and follow safety guidelines provided in the user manual to ensure accurate and safe measurements.

Introduction

Professional True RMS Industrial Digital Multimeter with Bluetooth and 6000/60000 count LCD.
This meter measures AC/DC Voltage, AC/DC Current, Resistance, Capacitance, Frequency(electrical & electronic), Duty Cycle, Diode Test, and Continuity plus Thermocouple Temperature.
It features a waterproof, rugged design for heavy-duty use. Proper use and care of this meter will provide many years of reliable service.

Safety

This symbol adjacent to another symbol, terminal or operating device indicates that the operator must refer to an explanation in the Operating Instructions to avoid personal injury or damage to the meter.
This WARNING symbol indicates a potentially hazardous situation, which if not avoided, could result in death or serious injury.
This CAUTION symbol indicates a potentially hazardous situation, which if not avoided, may result in damage to the product.
This symbol advises the user that the terminal(s) so marked must not be connected to a circuit point at which the voltage to earth ground exceeds(in this case)1000 VAC or VDC.
This symbol adjacent to one or more terminals identifies them as being associated with ranges that may, in normal use, be subjected to particularly hazardous voltages.
- For maximum safety, the meter and its test leads should not be handled when these terminals are energized.
This symbol indicates that a device is protected throughout by double insulation or reinforced insulation.

PER IEC101 D OVERVOLTAGE INSTALLATION CATEGORY OVERVOLTAGE CATEGORY I

Equipment of OVERVOLTAGE CATEGORY I is equipment for connection to circuits in which measures are taken to limit the transient overvoltages to an appropriately low level.
Note-Examples include protected electronic circuits.

OVERVOLTAGE CATEGORY II

Equipment of OVERVOLTAGE CATEGORY II is energy-consuming equipment to be supplied from the fixed installation.
Note-Examples include household, office, and laboratory appliances.

OVERVOLTAGE CATEGORY Ill

Equipment of OVERVOLTAGE CATEGORY Ill is equipment in fixed installations.
Note-Examples include switches in the fixed installation and some equipment for industrial use with a permanent connection to the fixed installation.

OVERVOLTAGE CATEGORY IV

Equipment of OVERVOLTAGE CATEGORY IV is for use at the origin of the installation.
Note-Examples include electricity meters and primary over-current protection equipment

Safety Instructions

This meter has been designed for safe use but must be operated with caution.
The rules listed below must be carefully followed for safe operation.

NEVER apply voltage or current to the meter that exceeds the specified maximum:

Input Protection Limits

Function| Maximum Input
V DC or AC| 1000V DC/ AC rms
mA AC/DC| 800mA 1OOOV fast-acting fuse
AAC /DC| 1DA 1OOOV fast acting fuse(20A for 30 seconds max every 15 minutes)
Frequency, Resistance, Capacitance, Duty Cycle, Diode Test, Continuity Temperature| 600V DC/ AC rms
Surge Protection: 8kV peak per IEC 61010

USE EXTREME CAUTION when working with high voltages.
DO NOT measure voltage if the voltage on the “COM” input jack exceeds 1 OV above earth ground.
NEVER connect the meter leads across a voltage source while the function switch is in the current, resistance, or diode mode. Doing so can damage the meter.
ALWAYS discharge filter capacitors in power supplies and disconnect the power when making resistance or diode tests.
ALWAYS turn off the power and disconnect the test leads before opening the covers to replace the fuse or batteries.
NEVER operate the meter unless the back cover and the battery and fuse covers are in place and fastened securely.
lf the equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired.

Meter Description

LCD
Backlight and HIRES button
Rang button
MDOE and Bluetooth button
Rotary Function Switch
µNmA and 1 DA input jack
V/O/Hz% /CAP/DIODE/TEMP input jack
MAX/MIN and PMAX/PMIN Button
HOLD and AUTO HOLD button
Hz% and Rel button
BATTERY cover
COM input jack

Note: The tilt stand and battery compartment are on the rear of the unit.

Symbols and Annunciators

TRIPLETT-MM870-Industrial-Grade-Digital-Multimeter-
fig-6

0perating Instructions

WARNING: Risk of electrocution. High-voltage circuits, both AC and DC, are very dangerous and should be measured with great care.
ALWAYS turn the function switch to the OFF position when the meter is not in use.
If “QL.:’ appears in the display during a measurement, the value exceeds the range you have selected. Change to a higher range.

DC Voltage Measurements

CAUTION: Do not measure DC voltages if a motor on the circuit is being switched ON or OFF. Large voltage surges may occur that can damage the meter.
Set the function switch to the VDC position.
Insert the black test lead banana plug into the negative COM jack.
Insert the red test lead banana plug into the positive V jack.
Touch the black test probe tip to the negative side of the circuit.
Touch the red test probe tip to the positive side of the circuit.
Read the voltage in the display.

AC Voltage (Frequency, Duty Cycle)Measurements

WARNING: Risk of Electrocution. The probe tips may not be long enough to contact the live parts inside some 240V outlets for appliances because the contacts are recessed deep in the outlets.
As a result, the reading may show O volts when the outlet has voltage on it. Make sure the probe tips are touching the metal contacts inside the outlet before assuming that no voltage is present.
CAUTION: Do not measure AC voltages if a motor on the circuit is being switched ON or OFF. Large voltage surges may occur that can damage the meter.
Set the function switch to the VAC/Hl/% position.
Insert the black test lead banana plug into the negative COM jack.
Insert red test lead banana plug into the positive V jack.
Touch the black test probe tip to the neutral side of the circuit.
Touch the red test probe tip to the “hot” side of the circuit.
Read the voltage in the display.
Press the Hz% button to indicate “Hz”.
Read the frequency in the display.
Press the Hz% button again to indicate”%”.
Read the % of duty cycle in the display.
Press the MODE button again to indicate a low pass .
Read the low pass voltage in the display

DC Current Measurements

CAUTION: Do not make 20A current measurements for longer than 30 seconds.
Exceeding 30 seconds may cause damage to the meter and/or the test leads.
Insert the black test lead banana plug into the negative COM jack.
For current measurements up to 6000µA DC, set the function switch to the µA position and insert the red test lead banana plug into the µA/jack.
For current measurements up to 600mA DC, set the function switch to the mA position and insert the red test lead banana plug into the µA/mAjack.
For current measurements up to 1 0A DC, set the function switch to the 1 DA position and insert the red test lead banana plug into the 10Ajack.
Press the MODE button to indicate “DC” on the display.
Remove power from the circuit under test, then open up the circuit at the point where you wish to measure current.
Touch the black test probe tip to the negative side of the circuit. Touch the red test probe tip to the positive side of the circuit.
Apply power to the circuit.
Read the current in the display.

AC Current(Frequency, Duty Cycle)Measurements

CAUTION: Do not make 20A current measurements for longer than 30 seconds.
Exceeding 30 seconds may cause damage to the meter and/or the test leads.
Insert the black test lead banana plug into the negative COM jack.
For current measurements up to 6000µA AC, set the function switch to the yellow µA position and insert the red test lead banana plug into the µA/jack.
For current measurements up to 600mA AC, set the function switch to the yellow mA position and insert the red test lead banana plug into the µA/jack.
For current measurements up to 1 0A AC, set the function switch to the yellow 1 0A position and insert the red test lead banana plug into the 10A jack.
Press the MODE button to indicate “AC” on the display.
Remove power from the circuit under test, then open up the circuit at the point where you wish to measure current.
Touch the black test probe tip to the neutral side of the circuit. Touch the red test probe tip to the “hot” side of the circuit.
Apply power to the circuit.
Read the current in the display.
Press the Hz % button to indicate “Hz”.
Read the frequency in the display.
Press the Hz % button again to indicate “%”.
Read the % duty cycle in the display.
Press and hold the MODE button to return to the current measurement.

Resistance Measurements

WARNING: To avoid electric shock, disconnect power to the unit under test and discharge all capacitors before taking any resistance measurements.
Remove the batteries and unplug the line cords.
Set the function switch to the Position.
Insert the black test lead banana plug into the negative COM jack.
Insert the red test lead banana plug into the positive n Jack.
Press the MOOE button to indicate “n” on the display.
Touch the test probe tips across the circuit or part under the test.
It is best to disconnect one side of the part under test so the rest of the circuit will not interfere with the resistance reading.
Read the resistance in the display.

Continuity Check

WARNING: To avoid electric shock, never measure continuity on circuits or wires that have voltage on them.
Set the function switch to the position.
Insert the black lead banana plug into the negative COM jack.
Insert the red test lead banana plug into the positive n jack.
Press the MODE button to indicate and on the display
Touch the test probe tips to the circuit or wire you wish to check.
If the resistance is less than approximately 300, the audible signal will sound. If the circuit is open, the display will indicate 0L.

Diode Test

Set the function switch to the position.
Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive V jack.
Press the MODE button to indicate and “ V” on the display.
Touch the test probes to the diode under test. Forward voltage will typically indicate 0.400 to 0. 700V.
Reverse voltage will indicate “OL’.’. Shorted devices will indicate near OV and an open device will indicate OL in both polarities.

Temperature Measurements

Set the function switch to the Temp position.
Insert the Temperature Probe into the input jacks, making sure to observe the correct polarity.
Press the MODE button to indicate “°F” or “°C”
Touch the Temperature Probe head to the part whose temperature you wish to measure.
Keep the probe touching the part under test until the reading stabilizes(about 30 seconds).
Read the temperature in the display.
Note: The temperature probe is fitted with a type K mini connector.
A mini connector to banana connector adaptor is supplied for connection to the input banana jacks.

Capacitance Measurements

WARNING: To avoid electric shock, disconnect power to the unit under test and discharge all capacitors before taking any capacitance measurements.
Remove the batteries and unplug the line cords.
Set the rotary function switch to the position.
Insert the black test lead banana plug into the negative COM jack.
Insert the red test lead banana plug into the positive V jack.
Press the MODE button to indicate “F”
Touch 1he test leads to the capacitor being tested.
Read the capacitance value in the display

Frequency(Duty Cycle)Measurements (Electronic)

Set the rotary function switch to 1he H/% position.
Insert the black lead banana plug into the negative COM jack and the red test lead banana plug into the positive Hz jack.
Touch the test probe tips to the circuit under test.
Read the frequency on the display.
Press the Hz % button to indicate “%”.
Read the % duty cycle in the display.

%4-20mA Measurements

Set up and connect as described for DC mA measurements.
Set the rotary function switch to the 4-20mA% position.
The meter will display loop current as a% with OmA=-25%, 4mA=0%, 20 mA= 100%, and 24mA=125%.

MOOE/Bluetooth

Press the MODE/Bluetooth button to select AC or Low Pass filter, AC mV or DC mV, Resistance, Continuity, Diode Test, Temp ‘C, and 0F.
Press and hold the Mode/Bluetooth until the symbol appears on the LCD. Bluetooth should be disabled when not connected to a mobile device to conserve battery power,
To turn off Bluetooth, press and hold the MODE/Bluetooth button unit the symbol no longer appears on the display.

Auto-ranging/Manual Range Selection

When the meter is first turned on, it automatically goes into Auto Ranging.
This automatically selects the best range for the measurements being made and is generally the best mode for most measurements.

For measurement situations requiring that a range be manually selected, perform the following:

Press the RANGE key. The “AUTO” display indicator will turn off.
Press the RANGE key to step through the available ranges until you select the range you want.
To exit the Manual Ranging mode and return to Autoranging, press and hold the RANGE key for 2 seconds.

Note: Manual ranging does not apply for the Temperature functions.

MAX/MIN

Press the MAX/MIN key to activate the MAX/MIN recording mode. The display icon “MAX” will appear. The meter will display and hold the maximum reading and will update only when a new “MAX” occurs.
Press the MAX/MIN key again and the display icon “MIN” will appear. The meter will display and hold the minimum reading and will update only when a new “MIN” occurs.
Press the MAX/MIN key again and the display icon “AVG” will appear. The meter will display the average reading.
To exit MAX/MIN mode press and hold the MAX/MIN key for 2 seconds.

RELATIVE Mode

The relative measurement feature allows you to make measurements relative to a stored reference value.
A reference voltage, current, etc. can be stored and measurements made in comparison to that value.
The displayed value is the difference between the reference value and the measured value.

Note: Relative mode does not operate in the 4-20mA function.

Measure as described in the operating instructions.
press and hold the REL key for 2 seconds to store the reading in the display and the “REI:’ indicator will appear on the display.
The display will now indicate the difference between the stored value and the measured value.
press and hold the REL key for 2 seconds to exit the relative mode.

Display Backlight

Press the key to turn the backlight off. Again Press the key to turn the backlight on. Change function switch will turn the backlight on.

HIRES

Pressing HIRES for 2 seconds causes the Meter to enter the high-resolution(HiRes), 4-1/2 digit mode. Readings are displayed at 10 times the normal resolution with a maximum display of 59,999 counts.
The HiRes mode works in all modes except capacitance, frequency counter functions, temperature, and the(peak)MIN/MAX modes.
To return to the 3-1/2 digit mode, press H again for 2 seconds.

Bar Graph

The analog bar graph functions like the needle on an analog meter. but without the overshoot.
The graph is not shown for capacitance, frequency counter functions, temperature, or peak min-max, or REL functions. range 6000.

HOLD

The hold function freezes the reading in the display. Press the HOLD key momentarily to activate or exit the HOLD function.

AUTO HOLD

The Auto HOLD mode captures the present reading on the display. When a new, stable reading is detected, the Meter beeps and displays the new reading. pressing AHOLD for 2 seconds To enter or exit Auto HOLD mode.

PEAK HOLD

The Peak Hold function captures the peak AC voltage or current. The meter can capture negative or positive peaks as fast as 1 millisecond in duration. Momentarily press the PEAK button, and “PEAK” and “MAX” will display. The meter will update the display each time a higher positive peak occurs. Press the PEAK button again, and “MIN” will display. The meter will update the display each time a lower negative peak occurs. Press and hold the PEAK button for more than 1 second to exit PEAK Hold mode.
Auto Power Off feature will be disabled automatically in this mode.

LOW Battery Indication

With a fresh battery installed, the battery icon with four lines above it will be displayed in the lower right corner of the LCD.
The lines will disappear as the battery is used. When the icon appears alone in the display, the battery should be replaced.

AUTO Power OFF

The auto-off feature will turn the meter off after 15 minutes. To disable the auto power-off feature, hold down the MODE button and turn the meter on. “1 OFF” will appear in the display.
Turn the meter off and then on again to re-enable the auto power-off feature.

Replacing the Batteries

Refer to Figure and replace the batteries as follows:

Turn the Meter off and remove the test leads from the terminals.
Remove the battery door assembly by using a standard blade screwdriver to turn the battery door screw one-half turn counterclockwise.
Replace the batteries with 4*1.5V “AM’
Reinstall the battery door assembly and secure it by turning the screw one-half turn clockwise.

Replacing the Fuses

Referring to Figure, examine or replace the Meter fuses as follows:

Turn the Meter off and remove the test leads from the terminals.
Remove the battery door assembly by using a standard blade screwdriver to turn the battery door screw one-half turn counterclockwise.
Remove the fuse by gently prying one end loose, then sliding the fuse out of its bracket.
Install only specified replacement fuses.
Reinstall the battery door assembly and secure ii by turning the screw one-half turn clockwise.

Specifications

6000counts:

Accuracy calculated as[%reading + (num. digits *resolution)] at 18°C+28°C<75%HR 60000counts:
Accuracy calculated as [%reading + (10num. digitsresolution)] at 18°C÷28°C<75%HR
NOTE: Accuracy is stated at 18°C to 28°C(65°F to 83°F) and less than 75% RH.
Note: Accuracy specifications consist of two elements:
(%reading)- This is the accuracy of the measurement circuit.
(+digits)- This is the accuracy of the analog-to-digital converter.

Warranty

Triplett / Jewell Instruments extends the following warranty to the original purchaser of these goods for use.
Triplett warrants to the original purchaser for use that the products sold by it will be free from defects in workmanship and material for a period of (2) two years from the date of purchase.
This warranty does not apply to any of our products that have been repaired or altered by unauthorized persons in any way or purchased from unauthorized distributors so as, in our sole judgment, to injure their stability or reliability, or which have been subject to misuse, abuse, misapplication, negligence, accident or which have had the serial numbers altered, defaced, or removed.
Accessories, including batteries, are not covered by this warranty.
Copyright © 2023 Triplett www.triplett.com

Documents / Resources

| TRIPLETT MM870 Industrial Grade Digital Multimeter [pdf] User Manual
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