MMR-6500 Low Resistance Meters

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Product Information:

Specifications:

• Model: MMR-6500, MMR-6700
• Manufacturer: SONEL S.A.
• Address: Wokulskiego 11, 58-100 widnica, Poland
• Version: 1.12
• Date: 05.07.2023

Product Usage Instructions:

Safety:

Before using the low-resistance meter, please read the safety
instructions provided in the manual to ensure safe operation.

General Settings – Menu:

Access the menu to configure general settings, including
software updates, service options, and user interface settings.

Measurements:

Perform various measurements including resistance measurement
with clamps, calibration of clamps, temperature measurement, and
windings temperature measurement.

Memory:

Manage memory data by entering clients, objects, measuring
points, logs, storing measurement results, viewing memory data,
searching in memory, copying customer data, and deleting memory
data.

Report Printing:

Utilize the feature for printing reports based on the
measurement data stored in memory.

Barcode Reader:

Use the barcode reader functionality for scanning and recording
relevant information.

Power Supply:

Monitor power supply voltage, follow general rules for using
Li-Ion rechargeable batteries, and adhere to the battery pack
charging procedure.

FAQ:

Q: How do I perform a resistance measurement with clamps?

A: To perform a resistance measurement with clamps, follow the
steps outlined in the manual. Ensure proper connection and
placement of the clamps for accurate readings.

Q: Can I print reports directly from the meter?

A: Yes, you can print reports directly from the meter by
accessing the report printing feature and selecting the desired
data to include in the report.

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LOW RESISTANCE METERS MMR-6500 MMR-6700
USER MANUAL
SONEL S.A. Wokulskiego 11 58-100 widnica
Poland
Version 1.12 05.07.2023

Thank you for purchasing our low-resistance meter. MMR-6500 and MMR-6700 meters are modern, high-quality meters, easy and safe in operation. Please acquaint yourself with this manual in order to avoid measuring errors and prevent possible problems in operation of the meter.

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CONTENTS

1 Safety ………………………………………………………………………………………………….5
2 General settings – menu ……………………………………………………………………….6
2.1 Meter settings…………………………………………………………………………………………….. 6 2.1.1 Energy saving …………………………………………………………………………………………………….7 2.1.2 Sound settings ……………………………………………………………………………………………………7 2.1.3 PIN code settings ………………………………………………………………………………………………..8 2.1.4 QR reader settings ………………………………………………………………………………………………9 2.1.5 Display brightness settings……………………………………………………………………………………9 2.1.6 Wi-Fi configuration …………………………………………………………………………………………….10 2.1.7 Printer settings ………………………………………………………………………………………………….11
2.2 Memory settings ……………………………………………………………………………………….. 12 2.2.1 Memory management ………………………………………………………………………………………..12 2.2.2 Object types database………………………………………………………………………………………..13 2.2.3 Object names database ……………………………………………………………………………………..14 2.2.4 Resistance limits database………………………………………………………………………………….15 2.2.5 Temperature limits database ……………………………………………………………………………….17 2.2.6 Material database………………………………………………………………………………………………18
2.3 Software update ……………………………………………………………………………………….. 19 2.4 Service ……………………………………………………………………………………………………. 20 2.5 User interface settings……………………………………………………………………………….. 21
2.5.1 Language selection ……………………………………………………………………………………………21 2.5.2 Selecting temperature unit ………………………………………………………………………………….22 2.5.3 Selecting the startup screen ………………………………………………………………………………..22 2.5.4 Changing the date and time ………………………………………………………………………………..23 2.6 Information about the meter ……………………………………………………………………….. 23 2.7 Factory (default) settings……………………………………………………………………………. 24 2.8 Emergency turning off the meter …………………………………………………………………. 24 2.9 Communication with PC …………………………………………………………………………….. 25
3 Measurements……………………………………………………………………………………26
3.1 Testing the resistance objects …………………………………………………………………….. 26 3.2 Testing the inductive objects ………………………………………………………………………. 31 3.3 Measurement with automatic method selection …………………………………………….. 35 3.4 Logger …………………………………………………………………………………………………….. 36 3.5 Special features ……………………………………………………………………………………….. 39
3.5.1 Resistance measurement with clamps ………………………………………………………………….39 3.5.2 Calibration of clamps………………………………………………………………………………………….40 3.5.3 Temperature measurement …………………………………………………………………………………41 3.5.4 Windings temperature measurement…………………………………………………………………….41
4 Memory ……………………………………………………………………………………………..46
4.1 Memory management (clients, objects, measuring points and logs) ……………………… 46 4.1.1 Entering the clients…………………………………………………………………………………………….46 4.1.2 Entering objects, subobjects, measurement points and logs……………………………………..47
4.2 Storing the measurement results in the memory ……………………………………………. 52 4.2.1 Entering the results of measurements with previously organized memory …………………..52 4.2.2 Entering the results of measurements without previously organized memory ………………54
4.3 Viewing memory data………………………………………………………………………………… 57 4.4 “Search” in the memory……………………………………………………………………………… 58 4.5 Copying customer data from the memory to USB stick and vice versa ……………… 60

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4.6 Deleting memory data ……………………………………………………………………………….. 61 5 Report printing …………………………………………………………………………………..63
6 Barcode reader…………………………………………………………………………………..63
7 Power supply……………………………………………………………………………………..64 7.1 Monitoring the power supply voltage ……………………………………………………………. 64 7.2 General rules for using Li-Ion rechargeable batteries …………………………………….. 64 7.3 Battery pack charging procedure ………………………………………………………………… 65
8 Cleaning and maintenance …………………………………………………………………65
9 Storage………………………………………………………………………………………………65
10 Dismantling and disposal …………………………………………………………………..65
11 Technical data ……………………………………………………………………………………66 11.1 Basic data ……………………………………………………………………………………………….. 66 11.2 Other technical data ………………………………………………………………………………….. 67
12 Manufacturer ……………………………………………………………………………………..68

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1 Safety
MMR-6500 and MMR-6700 meters are designed for measuring resistance of various types of connections (welded, soldered, butt) in electrical installations as well as in inductive devices (transformers, motors) and they are used to perform measurements that determine safety condition of electrical installations. Therefore, in order to provide conditions for correct operation and accuracy of obtained results, the following recommendations must be observed: Before you proceed to operate the meter, acquaint yourself thoroughly with the present manual
and observe the safety regulations and specifications provided by the producer. MMR-6500 and MMR-6700 meters are designed to measure low-resistance values. Any applica-
tion that differs from those specified in the present manual may result in a damage to the device and constitute a source of danger for the user. In case of measurements on systems, components and devices that may be under dangerous voltage, MMR-6500 and MMR-6700 may be used only by qualified persons who are authorized to work on electric installations. Unauthorized use of the meter may result in its damage and may be a source of serious hazard to the user. Using this manual does not exclude the need to comply with occupational health and safety regulations and with other relevant fire regulations required during the performance of a particular type of work. Before starting the work with the device in special environments, e.g. potentially firerisk/explosive environment, it is necessary to consult it with the person responsible for health and safety. It is unacceptable to operate the device when: a damaged meter which is completely or partially out of order, a meter with damaged insulation, a meter stored for an excessive period of time in disadvantageous conditions (e.g. excessive
humidity). If the meter has been transferred from a cool to a warm environment with a high level of relative humidity, do not start measurements until the meter is warmed up to the ambient temperature (approximately 30 minutes). Before measurement make sure that test leads are connected to appropriate measuring terminals. Do not power the meter from other sources than those specified in this manual. Repairs may be performed only by an authorized service point. The devices meet the requirements of EN 61010-1, EN 61010-2-030 and EN 61010-031.
Note: The manufacturer reserves the right to introduce changes in appearance, equipment and technical data of the meter.
Note: An attempt to install drivers in 64-bit Windows 8 and Windows 10, may result in displaying “Installation failed” message. Cause: Windows 8 and Windows 10 by default block drivers without a digital signature. Solution: Disable the driver signature enforcement in Windows.

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2 General settings – menu

Before turning the device on for the first time, charge the meter’s battery pack according to the charging procedure in chapter 7.3.

When the meter is turned on, it displays the main menu.

Indication of overheating of the power supply adapter, battery or measuring current controller and no battery indication.

Full memory indicator ­ it is shown, when 30% of free memory
is available, it is shown, when 20% of free memory is available.

Wi-Fi signal strength Power supply from mains

Battery charge level, x ­ indicates empty battery or no battery in the compartment.

2.1 Meter settings
In the main menu, click icon .

Click Meter Settings button.

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2.1.1 Energy saving
In order to save its rechargeable battery, the meter automatically shuts off or blanks the screen after an adjustable inactivity period.
Click Energy saving button.

2.1.2 Sound settings

Set the inactivity time for blanking the screen and turning off the meter.
Click Sound Settings button.

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Click the box to turn on ( ) or off the sound signals.
Note:
– Alarm signals are active even if the sound signals are off.
2.1.3 PIN code settings
The PIN code is used for network connection with the meter.
Click PIN code settings button.

Use “+” and “-” buttons to set the code and confirm it by pressing OK.
The PIN code is used for communication with the PC software. The factory code is 123.

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2.1.4 QR reader settings

Click QR reader settings button.

2.1.5 Display brightness settings

To configure the reader, please scan the displayed code.
Click Display brightness button.

Use “+” and “-” buttons to set the desired brightness and confirm it by pressing OK.

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2.1.6 Wi-Fi configuration

Click WiFi configuration button.

To see local active WiFi networks, click Search network button.

The meter detected networks secured by password. Click the name of the network to enter the password.

Enter the password and con-

firm it by pressing

.

The meter connects to the

network, which is automatical-

ly included in the list of trusted

networks.

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You may use OFF button to turn off WiFi.

2.1.7 Printer settings
The meter is compatible with Sato CG2 printer.

After clicking Prefered networks button, the meter will display networks saved in its memory. By pressing button you may delete the network.
Click Printer Settings button.

By clicking individual fields, you may change the data of person/company performing the measurements, which will be printed. Marking the Auto printing box will automatically print when saving the measurement result to memory provided the printer is on.

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2.2 Memory settings
In the main menu, click button . Note: By pressing button, you may enter settings or enter the higher level in the settings.
Click Memory Settings button.

2.2.1 Memory management

Click Memory management button

This option allows you to read the % of the used memory and to clear it: after clicking Delete memory all clients are deleted with their objects and measurement results. By
pressing button located next to each customer, you can also delete individual customers.

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2.2.2 Object types database
This is a list of types of tested resistive and inductive objects.
Click Object types database button.
The meter has 4 default types saved in its memory. Use button to add a new type of the tested object.
Enter a new type of the object being tested.

Added types may be deleted by pressing .

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2.2.3 Object names database
It is a list of names of tested objects or measurement points.
Click Object names database button.
The meter has 4 default names saved in its memory. Use button to add a new name.
Enter the name of the object.

Added names may be deleted by pressing .

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2.2.4 Resistance limits database
The specified limits may be used to automatically assess the validity of the results of resistance measurements.
Click Resistance limits database button.

Click , to add a new limit.

Click Limit name box.

Enter the name of the limit.
Use button to go to the lower limit setting.

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Enter the lower limit. Use button to go to the upper limit setting. You can also set only one of the limits.
Use button to save the limit in the memory. Use button, to exit without saving.
Use to cancel the limit.

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2.2.5 Temperature limits database
The specified limits may be used to automatically assess the validity of the results of temperature measurements.
Click Temperature limits database button.
Click , to add a new limit.
Enter and save the limits using the same method as described in section 2.2.4. Use to cancel the limit.

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2.2.6 Material database
The database contains the temperature coefficients of resistance for different materials, used in measurements with temperature compensation.
Click Material database button.
The meter has 5 defaults materials saved in the memory, together with the thermal resistance coefficients of: copper, aluminium, tin, steel and silver. Use button to add a new material.
Enter and save the material and coefficient, using the same method as described in section 2.2.4.

Use button to delete the added material.

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2.3 Software update
The software of the meter is periodically modified. You may download its current version from www.sonel.pl.
In the main menu, click icon .
Clik Software update button.
Read the displayed text. To perform an update insert the USB drive with the update files and click Update or ensure Internet connection of the meter via WiFi, and click Update button.
The meter is downloading software.

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Click OK to run the update or close the window to cancel.
Note:
– Update is performed automatically and may be divided into a few stages. During the update, do not turn off the power supply of the meter and do not remove the USB drive. The update process is continued until the meter displays the main MENU screen.
Only at this point, you can turn off the power supply of the meter or start its use.
2.4 Service
This function is available for factory servicing and is protected by password.

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2.5 User interface settings
In the main menu, click icon .

Click User interface settings button.

2.5.1 Language selection

Click Language button.

Click the selected language.

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2.5.2 Selecting temperature unit

Click Temperature button.

2.5.3 Selecting the startup screen

Click the button of selected unit.
Click Startup screen.

Click the selected startup screen (the screen will be automatically shown after turning on the meter). This feature is useful for making measurements of a given type for a longer period.

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2.5.4 Changing the date and time

Click date button.

2.6 Information about the meter
In the main menu, click icon .

Use “+” and “-” buttons to set year, month and day, then and confirm it by pressing OK. Similarly, you may set the time. To make changes, click Change button.
Click Meter infor button.

The screen will display information on the meter and its manufacturer.

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2.7 Factory (default) settings
In the main menu, click icon .

Click Default Settings button.

Read the note and click the button to restore the default settings, click button to cancel and return to the menu.
The following elements are restored to the default settings: – measurement settings, – list of object types, – list of object names, – list of materials, – list of R limits, – list of T limit, – sound settings, – default startup screen, – the list of WiFi networks, – temperature unit, – PIN code settings, – energy saving settings, – display brightness.
2.8 Emergency turning off the meter
To turn off the meter in an emergency, press and hold START/STOP button.

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2.9 Communication with PC

Press Connect to PC.

On your PC run Sonel Reader or Sonel Reports PLUS. To terminate the connection press .

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Notes:

3 Measurements

– The measurement with temperature compensation is performed when the user wants to know the resistance of the object at a certain reference temperature, and the measurement is made at another temperature. Basing on the temperature coefficient of resistance of the measured object, the meter calculates the resistance value at the reference temperature. – When using the function of temperature compensation, the declared measurement accuracy is valid for the result before the compensation. – If the current test leads are not connected, a message appears: Lack of continuity of current leads. – If the voltage test leads are not connected, a message appears: Lack of continuity of voltage leads.

3.1 Testing the resistance objects

When necessary, name the measuring point.

Note:

– After entering the name of the measuring point, the measurement result will be saved in the memory

and after selecting the client and object (subobject) you may simply click

button to create and

save the point automatically. When during the logging process you click a point already existing in the

memory, then its name created during the memory management will be overwritten by the name typed

in the measurement box.

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Auto/Manual switch (auto / manual range selection): Auto – the measuring current is limited to a value not exceeding the set value, Manual – measuring current has the set value.
Setting the measuring current.

Use to go to the next settings.

Switching Unidirectional/Bidirectional measurement.
Selecting trigger method: – manual: use START/STOP button – automatic: by connecting test leads to the object – continuous: the measurement is triggered and ended by pressing START/STOP button.

Boxes for setting the range and measurement current on the screen above correspond to the same boxes shown in the previous screen.
Notes:
– Automatic and continuous measurement triggering mode is not active for I >10 A. – Measurement with current> 10A A is possible only when with power supplied from mains. – Bidirectional measurement is used to compensate the potential present at the contact point of two different conductors. In this case, the main result of the measurement is the average of results from individual directions. – After selecting automatic trigger, the first measurement must be started by pressing START/STOP button, next measurements may be initiated by connecting the test leads to the object. – automatic trigger operates correctly for resistance 4 k, above this value there is no guarantee of correct operation.

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When necessary, select resistance limits from the database (click Limit settings’ name) or set the required limits for the performed measurement by clicking Lower limit and/or
Upper limit.

Click , to enter the temperature settings. After checking “Temperature compensation” box, the meter uses the specified temperatures and temperature coefficient of resistance to calculate the resistance at the reference temperature.

Turning on/ off the temperature compensation.
Enter the ambient temperature ­ optional.
Enter the temperature of the object or measure it with a thermometer connected to the meter socket.

Select a material from the database or
enter coefficient for the tested object.
Enter the reference temperature, for which the result will be calculated.

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Notes: – When you activate the temperature compensation, set all the values (not necessarily the ambient temperature) to exit to the measurement screen. – The ambient temperature is added to the measurement report.
Press , to enter the measurement.
Connect the meter to the tested object. Press START/STOP.

Note: – connection of test leads to an outlet sockets of 10 A locks the measurement for currents > 10 A.

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Correct result: R0 within limits.

Incorrect result: R0 outside limits.

U ­ voltage drop on the measured object R0 ­ resistance at the reference temperature RF ­ resistance at the measuring current flowing in the assumed positive direction RR ­ resistance at the measuring current flowing in the assumed negative direction Ta ­ ambient temperature T1 ­ object temperature T0 ­ reference temperature ­ temperature coefficient of resistance
– upper limit
– lower limit

Notes:

– The measuring current is obtained from the current source. – During measurements with high currents, high-current connectors may overheat due to: excessive current flow, connector poor tightening, contamination or damage. – Declared measurement uncertainty refers to the measured value; for value calculated with the reference temperature the uncertainty is not specified.

– The result may be entered into the memory by pressing

button (see sec. 4.2).

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3.2 Testing the inductive objects

When necessary, name the measuring point.

When measuring inductive objects, only Auto mode is available – the measuring current is limited to a value not exceeding the set value,
Setting the measuring current limits.

Use to go to the next settings.

Selection of measurement mode: – normal – continuous: the measurement continues until it is turned off by pressing START/STOP button

Switching Unidirectional/Bidirectional measurement.

Algorithm selection: – normal – fast: greater tolerance for result stability criterion – special – it can be used, among others, for amorphous cores; it is also recommended in the case of high power transformers measurement.

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Boxes for setting the range and measurement current on the screen above correspond to the same boxes shown in the previous screen.
Notes:
– Current > 10 A is not available in this function. – Bidirectional measurement is used to compensate the potential present at the contact point of two different conductors. In this case, the main result of the measurement is the average of results from individual directions. – Amorphous core is made of amorphous sheet, which has a non-crystalline structure that is closer to glass than metal. No-load losses in such a transformer are much lower than in traditional transformers. The process of measuring the resistance, due to the nature of the object, contains a measurement algorithm modified in relation to normal inductive objects. – When measuring large transformers with a discharged battery and long measuring leads, there may be a problem with the stabilization of the measurement result (too high power consumption from the discharged battery). In this case:
– charge the battery or – work with mains power or – shorten the test leads.
Select resistance limits from the database (click Limit settings’ name) or set the required limits for the performed measurement by clicking Lower limit and/or Upper limit.

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Click , to enter the temperature settings. After checking “Temperature compensation” box, the meter uses the specified temperatures and temperature coefficient of resistance to calculate the resistance at the reference temperature.

Turning on/ off the temperature compensation
Enter the ambient temperature ­ optional.
Enter the temperature of the object or measure it with a thermometer connected to the meter socket.

Select a material from the database or
Enter coefficient for the tested object
Enter the reference temperature

Notes:
– When you activate the temperature compensation, set all the values (not necessarily the ambient temperature) to exit to the measurement screen. – The ambient temperature is added to the measurement report.
Press , to enter the measurement.

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Connect the meter to the tested object. Press START/STOP.

Correct result: R0 within limits.

Incorrect result” R0 outside limits.

U ­ voltage drop on the measured object RF ­ resistance at the measuring current flowing in the assumed positive direction RR ­ resistance at the measuring current flowing in the assumed negative direction Ta ­ ambient temperature T1 ­ object temperature T0 ­ reference temperature ­ temperature coefficient of resistance
– upper limit
– lower limit

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Use button to display the graph of resistance over time.

Notes:

– It is recommended to use the maximum source power (set the current limit high enough), because then the core is saturated faster and the result stabilizes faster. – Declared measurement uncertainty refers to the measured value; for value calculated with the reference temperature the uncertainty is not specified. – Resistance values > 2 k displayed on the screen during the measurement are shown for information purposes – they have no specified accuracy.

– The result may be entered into the memory by pressing

button (see sec. 4.2).

3.3 Measurement with automatic method selection

The measurement is performed as in the case of testing the inductive objects If based on the difference between the instantaneous and average resistance during the result stabilization, the meter determines that the object is resistive, it will complete the measurement faster.

Notes:
– Current > 10 A is not available in this function. – For high power transformers it is recommended to use the measurement in the same mode as for inductive objects.

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3.4 Logger
The logger is designed for logging the results with the interval from 1 second to 15 minutes.

When necessary, name the measuring point.
Switching between Auto/Manual mode: Auto – the measuring current is limited to a value not exceeding the set value, Manual – measuring current has the set value. When measuring inductive objects, only Auto mode is available.
Setting the measuring current values or limits.

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Use to go to the next settings.
Selecting the object type: – resistance – inductive

Selecting the time interval: 1 s, 5 s, 10 s, 15 s, 1 min, 5 min, 10 min, 15 min.
Selecting logging time: 1 min, 5 min, 10 min, 15 min, 30 min.

Notes:
– Current > 10 A is not available in this function. – The selected sampling time must be lower than the time set for logging, otherwise the meter will set the default times.
Select resistance limits from the database (click Limit settings’ name) or set the required limits for the performed measurement by clicking Lower limit and/or Upper limit.

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Press button, to enter the logger.

Connect the meter to the tested object. Press START/STOP.
Sample No./number of samples Time interval Logging time

Use button to display the
graph of resistance over time – both during the logging process and after its completion.

Note:

– After the logging process, the result may be entered into the memory by pressing

button (see

sec. 4.2). The values of individual samples may be read by viewing memory (see sec. 4.3).

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3.5 Special features
The meter has four additional functions: – temperature measurement, – windings temperature measurement based on the resistance measurement, – measurement with current clamps, – calibration of clamps.
3.5.1 Resistance measurement with clamps
The measurement with clamps is used for both-side grounded objects, e.g. circuit breakers. The clamps are used to measure current flowing through the grounding and its value is used to calculate the value of current actually flowing through the measured object.
Connect the meter according to the drawing.

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Press START/STOP button.

In addition to the resistance, the meter also displays the value of current measured with clamps.

Note:

– Disconnected clamps are signalled by displayed icon

.

3.5.2 Calibration of clamps
Before first use, the clamps must be calibrated. To do this, short circuit both current inputs, fix the clamps onto the cable and press START/STOP button. When clamps are calibrated, the current is always less than 10 A, so you can use 10 A or 100 A (200 A) sockets.

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3.5.3 Temperature measurement
Connect the temperature probe to the appropriate socket in the meter.
Read the temperature.
3.5.4 Windings temperature measurement
This function allows to calculate the temperature of windings for a heated object – e.g. motor, basing on the measured winding resistance at ambient temperature and after a period of operation, taking into account the temperature coefficient of resistance known for the winding material. It is assumed that after a significant stoppage time, the temperatures of the winding and motor block are the same. After a working period, initially the winding temperature differs from the temperature of the motor block. It may be calculated by measuring the change of the winding resistance.

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When necessary, name the measuring point.
The method of supplying the measuring current is nonadjustable and set on Auto mode – the measuring current is limited to a value not exceeding the set value. Setting the measuring current values or limits.
Use button to go to limit settings (mode, measurement and triggering are set as nonadjustable).

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When necessary, select temperature limits from the database (click Limit settings’ name) or set the required limits for the performed measurement by clicking Lower limit
and/or Upper limit.

Click , to enter the temperature settings.
Enter the ambient temperature ­ optional.
Enter the temperature of the object or measure it with a thermometer connected to the meter socket.

Select a material from the database or
Enter coefficient for the tested object

Note: – Entering factor and the temperature of the object is necessary to enter the measurement screen.

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Press , to enter the measurement. Connect the meter to the motor windings. Press START/STOP.

Disconnect the test leads from the motor, start the motor.

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After the desired working time turn off the engine, reconnect the meter to the motor winding and press START/STOP.
RT1 ­ resistance of the cold winding RT2 ­ resistance of the hot winding T1 ­ temperature of the cold object Ta ­ ambient temperature ­ temperature coefficient of resistance
– upper limit – lower limit

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4 Memory 4.1 Memory management (clients, objects, measuring points and logs)
Note: – The memory may be organized before the measurements, or on a regular basis, after the measurement. 4.1.1 Entering the clients
Click , to enter the memory.
Note: – Use button to enter the memory management for measurements results or to enter a higher level in the memory.
To add a client, click button.

By clicking the individual fields, enter customer data using the keyboard. Client’s name (box marked in orange) is mandatory.

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Use button to save client’s data in the memory.

4.1.2 Entering objects, subobjects, measurement points and logs
4.1.2.1 Entering objects and subobjects

Click ent.

of the selected cli-

To add an object, measuring point or log, click button.

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Click Object button.

Click Object name box, to name the object – mandatory.

Select one of the default names or enter your own.

You may attach an additional description by clicking Description box. By clicking Object type box, you may select the default type of or enter your own.

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Select one of the default names or enter your own.
Use button, to save the object in the memory.
By clicking you can add more objects. By clicking the object field and button, you may enter subobjects in the object etc.- up to 4 levels.

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4.1.2.2 Entering measurement points and logs Measuring points and logs may be entered at any memory level, i.e. at the level of client object or
subobject. Log is a measuring point distinguished due to performing a series of measurements in one point.
Click of the client, and then or press button at the level of the object (subobject).
.
Click Measurement point button or Log button.

Click Measurement point name to name it – mandatory.

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Select one of the default names or enter your own.
By clicking Measurement point type box, you may select the default type of or enter your own. For logging, it is possible to add an additional description, similarly as for the object.
Use button to enter a measuring point or log to the memory.

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4.2 Storing the measurement results in the memory
Notes: – Before performing the next series of measurements at the same measuring points, the previous results must be archived, because for one measuring point, you can save only one result and entering the next will erase the previous one. – The measurement result may be entered only to the measuring point or to logger. 4.2.1 Entering the results of measurements with previously organized
memory
After finishing the measurement press .
Select the client by clicking button next to its name.

Select the object (subobject) by clicking its name.

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Select the measuring point by clicking its name (indicated by orange border).
Save the result by clicking button.

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4.2.2 Entering the results of measurements without previously organized memory
Method 1
After finishing the measurement press .

Click , to add a client.

After saving the client click its button and then click button
to add the object

After adding and saving the object (also subobjects if
necessary), click button to add the measurement point.

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After adding and saving the
measuring point, click . The result is saved to memory, the meter returns to the measuring mode.

Method 2

After the measurement or before ir, click Measurement point name and enter the name.

After finishing the measurement press .

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Click , to add a client.

After saving the client click its button and then click button to add the object

After adding and saving the object (also subobjects if necessary), click the object and then , the measuring point with the measurement result will be saved automatically.
Note: – Having selected the client and object (subobjects) and performing a series of measurements on one object, after the measurement and entering the name of the measuring point, click and on the displayed screen click again , the measuring point with the measurement result will be saved automatically.

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4.3 Viewing memory data

Click , to enter the memory.
Click of the selected object and then click on the object, subobjects, measuring point or logger.

When using the logger, clicking the field with results will cause the meter to display the individual samples. You may scroll them using , but-
tons. Use button to display the graph.

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4.4 “Search” in the memory
In order to facilitate searching for an object or device in the memory, a function of memory search is added. To start the function of searching in the memory:
Click .
Click of the selected client.

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Mark appropriate positions
Enter the object type or select the default type
Enter the relevant dates

In any of the client’s window, click button.
Enter the name or its several subsequent letters. Select the type of the tested object: – all – resistive – inductive Selecting sorting by name or date
After entering all the search criteria, click button again.

Notes: – To perform the search, enter the name (or its part) or one of the dates. – The size of letters in the name of searched item is ignored.

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4.5 Copying customer data from the memory to USB stick and vice versa
In the main menu, click button , then Memory settings
and Memory management.
Insert the USB stick into the appropriate USB slot of the meter.
Click to display the memory of the pendrive.

Click to display the memory of the meter.

Click

to copy data.

Click , to save data in the
USB stick or to copy data from the USB stick to the memory of the meter.

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4.6 Deleting memory data

To delete the whole memory, click Delete memory button.

Click YES, to confirm deleting or NO, to cancel it.

To delete a client, click button next to its name.

Click YES, to confirm deleting or NO, to cancel it.

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To delete an object or the measuring point / log, enter its edition by clicking … …
…and then click button.
Click YES, to confirm deleting or NO, to cancel it.

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5 Report printing
– Sato CG2 printer must be connected to any of the USB socket of “Host” type. You can print measurement results directly after the measurement or those stored in the memory . To print the result, click icon .
The printout includes all the results and parameters of the measurement, assessment (positive/negative), the date and time of measurement and data of person performing it, entered in the printer settings. Note: – log results are not printed.
6 Barcode reader
If the tested object has a label with the results of previous measurement and a barcode reader, use a barcode reader connected to the meter and scan the code to set the object’s measurement parameters. Scanning the barcode with the main menu displayed will give the meter the access to the encoded measurement.
To adapt a newly purchased DS4208 reader to work with the meter, connect it to the USB port of running computer and read the following code:

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7 Power supply
The meters are powered by an AC adapter or a battery pack. When supplied from the mains, the battery pack is charged.
7.1 Monitoring the power supply voltage
The charge level of the battery pack is indicated by the symbol in the right upper corner of the display on a current basis:

– the battery pack is charged.
– the battery pack is discharged.
– the battery pack is being charged.
Note:
– Remember that measurements performed with an insufficient supply voltage feature additional errors which the user is unable to evaluate. Consequently, such measurements cannot prove that the results of resistance measurements are correct.
– Electric socket used to power the MMR meter should be grounded.
7.2 General rules for using Li-Ion rechargeable batteries
– Store the meter with half-charged battery pack in a dry, cool and well ventilated place and protect it from direct sunlight. The battery pack may be damaged if stored when fully discharged. The ambient temperature for prolonged storage should be maintained within the range of 5°C…25°C.
– Charge the batteries in a cool, well-ventilated place at a temperature of 10°C … 28°C. Build-in charger detects both too low and too high temperature of rechargeable battery and blocks the charging process. Charging in too low temperature might irreparably damage rechargeable batteries. The increase in temperature of the battery pack may cause electrolyte leakage and even its ignition or explosion.
– Do not charge or use the batteries in extreme temperatures. Extreme temperatures reduce the lifetime of rechargeable batteries. Always observe the rated operating temperature. Do not dispose the battery pack into fire.
– Li-Ion cells are sensitive to mechanical damage. This kind of damage may cause its permanent damage and thus – ignition or explosion. Any interference in the structure of Li-ion battery pack may cause its damage. This may result in the ignition or explosion. A short-circuit of the battery poles “+” and “-” may permanently damage the battery pack or even cause its fire or explosion.
– Do not immerse Li-Ion battery in liquids and do not store in humid conditions.
– If the electrolyte contained in the Lithium-Ion battery pack, contacts eyes or skin, immediately rinse the affected place with plenty of water and consult a doctor. Protect the battery against unauthorised persons and children.
– When you notice any changes in the Lithium-Ion battery pack (e.g. changes in colour, swelling, excessive temperature), stop using the battery pack. Li-Ion batteries that are mechanically damaged, overcharged or excessively discharged are not suitable for use.

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– any misuse of the battery may cause its permanent damage. This may result in the ignition. The seller and the manufacturer shall not be liable for any damages resulting from improper handling Li-Ion battery pack.
7.3 Battery pack charging procedure
Charging the battery pack is possible only when the meter is on. This is caused by application of high power power supplies, which need active cooling (fans) while working. The fan noise is present while charging.
In order to charge the meter, connect it to the power grid and then turn the device on. After starting the meter enables the charging procedure. The charge level of the battery pack is indicated with the icon described in chapter 7.1.
8 Cleaning and maintenance
CAUTION! Apply only maintenance methods specified by the manufacturer in this manual.
The casing of the meter may be cleaned with a soft, damp cloth using all- purpose detergents. Do not use any solvents or cleaning agents which may scratch the casing (powders, pastes, etc.).
The electronic system of the meter does not require maintenance.
9 Storage
In the case of storage of the device, the following recommendations must be observed: Disconnect all the test leads from the meter. make sure that the meter and accessories are dry, during prolonged storage remove the batteries storage temperatures must be in accordance with those defined in technical specifications, in order to prevent total discharge of the rechargeable batteries during prolonged storage, charge
them from time to time.
10 Dismantling and disposal
Worn-out electric and electronic equipment should be gathered selectively, i.e. it must not be placed with waste of another kind.
Worn-out electronic equipment should be sent to a collection point in accordance with the law of waste electrical and electronic equipment.
Before the equipment is sent to a collection point, do not dismantle any elements. Observe the local regulations concerning disposal of packages, worn- out batteries and accumulators.

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11 Technical data

11.1 Basic data
Abbreviation “m.v.” used in the specification of accuracy means a standard measured value.

Uncertainty values stated in the table refer to the measurement with bidirectional current and relate to the average of two measurements according to the following formula:
R RF RR , where RF ­ resistance at the assumed “forward” current direction and RR ­ resistance 2
at the assumed “backward” current direction. For measuring with unidirectional current, the specified accuracy is not guaranteed.

Measurement of resistance
Range
0.0 …999.9 0.0 …999.9 1.0000 m…1.9999 m 0.0 …999.9 1.0000 m …3.9999 m 0.0 …999.9 1.0000 m …7.9999 m

Resolution
0.1 0.1 0.0001 m 0.1 0.0001 m 0.1 0.0001 m

Accuracy * ±(0.25% + 2 digits)

Measuring current MMR-6700 | 100 A < I 200 A
50 A < I 100 A
20 A < I 50 A
10 A < I 20 A

Range

Resolution

Accuracy *

Measuring current / voltage **

0 …999.9 1.0000 m…1.9999 m

0.1 0.0001 m

10 A (20 mV)

2.000 m …19.999 m

0.001 m

10 A (200 mV)

20.00 m..199.99 m

0.01 m

10 A / 1 A (2 V / 200 mV)

200.0 m …999.9 m 1.0000 …1.9999

0.1 m ±(0.25% m.v. + 2 digits) 0.0001

1 A / 0.1 A (2 V / 200 mV)

2.000 …19.999

0.001

0,1 A (2 V)

20.00 …199.99

0.01

10 mA (2 V)

200.0 …1999.9

0.1

1 mA (2 V)

• – for measurements on inductive objects in fast mode: ±(2% m.v. + 2 digits)

** – applies to measurements on resistance objects, for measurements on inductive objects output

voltage 5 V

Resistance measurement in the presence of noise of 50 Hz or 60 Hz

Signal/noise ratio

Additional uncertainty

Signalling

N 0.02

–

–

0.02 > N 0.004

1%

N < 0.004

unspecified

Measuring current settings Resistance measurements of resistive objects:
MMR-6500 | 1 mA, 10 mA, 100 mA, 1 A, 10 A, 50 A, 100 A or within range of 10 A…100 A in steps of 10 A MMR-6700 | 1 mA, 10 mA, 100 mA, 1 A, 10 A, 50 A, 100 A, 200 A or within range of 10 A…200 A in steps of 10 A
Resistance measurements of inductive objects:
1 mA, 10 mA, 100 mA, 1 A, 10 A

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11.2 Other technical data
a) insulation type acc. to EN 61010-1 …………………………………………………………………………… double b) overvoltage category acc. to EN 61010-2-030
measuring side……………………………………………………………………………………………..CAT IV 50 V mains power supply……………………………………………………………………………………… CAT II 300 V c) ingress protection acc. to EN 60529 with closed housing ………………………………………………………………………………………………… IP67 with open housing, powered from mains or batteries …………………………………………………… IP40 d) power supply …………………………………………………………… Li-Ion rechargeable battery 7.2 V 8.8 Ah e) mains supply MMR-6500 ……………………………………………100 V..265 V/50 Hz..60 Hz, Imax 10 A, Pmax 700 W MMR-6700 …………………………………………. 100 V..265 V/50 Hz..60 Hz, Imax 16 A, Pmax 1200 W f) battery charging time ………………………………………………………………………………………approx. 3.5 h g) number of measurements with 10A current performed when powered from the battery pack ……….. …………………………………………………………………. 200..250, depending on the ambient temperature h) maximum wire resistance for 10 A current …………………………………………………………………250 m i) accuracy of measuring current setting ……………………………………………………………………….. 10% j) time of performing the resistance measurement with selected resistive object type and bidirectional current flow …………………………………………….. 7..15 s …………………………………………………………………………………………………depending on the measuring current with selected inductive object type, dependent on the resistance and inductance of the object …………… ………………………………………………………………………………………………………………………………….. 10 s or more k) dimensions ……………………………………………………………………………..390 mm x 308 mm x 172 mm l) meter weight MMR-6500 ……………………………………………………………………………………………….. approx. 8.2 kg MMR-6700 ……………………………………………………………………………………………….. approx. 8.7 kg m) operating temperature …………………………………………………………………………………. -10C…+50C n) charger operating temperature …………………………………………………………………………. 0C…+45°C o) storage temperature ……………………………………………………………………………………. -20C…+60C p) humidity………………………………………………………………………………………………………….. 20%…90% q) reference temperature ……………………………………………………………………………………. +23C ± 2C r) reference humidity …………………………………………………………………………………………….40%…60% s) altitude (above sea level): ……………………………………………………………………………………. <2000 m t) temperature coefficient ………………………………………………………..0.01% of d.v./ C 0.1 digit / C u) TFT graphic display …………………………………………………………………………………… 800×480 points v) interface standard …………………………………………………………………………………………….. USB, LAN w) quality standard, design and manufacturing …………………………………………….. ISO 9001 compliant x) the product meets the EMC requirements according to………………. EN 61326-1 and EN 61326-2-2
Note: During the measurement, when the meter is connected to the measured object
and the output current exceeds 10 A, a temporary increase of radiated emission level may occur (EN 61326-1 point 4). The LAN port may be used to communicate with an external system. This function is optional, available on special order.

Note: SONEL S.A. hereby declares that the radio device type MMR-6500/6700 complies with Directive 2014/53/EU. The full text of the EU Declaration of Conformity is available at the following website address: https://sonel.pl/en/download/declaration-of-conformity/

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12 Manufacturer
The manufacturer of the device and provider of guarantee and post-guarantee service:
SONEL S.A. Wokulskiego 11 58-100 widnica
Poland tel. +48 74 884 10 53 (Customer Service)
e-mail: customerservice@sonel.com web page: www.sonel.com
Note: Service repairs must be performed only by the manufacturer.

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SYMBOLS DISPLAYED BY THE METER

Memory

Saving to memory

Settings

Report print

Return to the main menu
Help
Adding a client, object or measurement point
Searching for an object or measurement point
Entry to client objects
Entry to client, object or measurement point edition, with a possibility of changing data Fast entry deletion on the onscreen keyboard
Deletion of a measurement point, object or client
Measuring mode

Temperature

measurement,

reference temperature

Presentation of measurement results in the form of a time chart

Exit from the option

Wi-Fi signal strength
There was a limitation of the measuring current to a value lower than that ensuring maximum accuracy
Test leads interchanged
High level of noise (interference), measurement possible with additional uncertainty High level of noise (interference), measurement possible without defining uncertainty
Measuring current greater than 10 A blocked

Recording mode

No clamps connected

Measurement setup mode
]

Exceeded temperature of terminal I1 or I2

References

• Sonel S.A.
• Sonel S.A.
• Sonel S.A.

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