Introducing the Portable Multi-channel Data Acquisition Recorder
MEMORY HiCORDER MR8875
User Guide
Table of Contents
Introduction… ……………………………………………………………… |
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What is the Memory HiCorder MR8875? ………………………… |
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What types of input modules are available? … …………………… |
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Analog Unit MR8905 -- High-voltage direct input………………………… |
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Analog Unit MR8901 -- Four-channel measurements…………………… |
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Voltage/Temp Unit MR8902 -- Measuring multiple temperature signals… |
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Strain Unit MR8903 -- Measure miniscule voltage levels from strain … |
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CAN Unit MR8904 -- Record CAN and analog signals simultaneously… |
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Where can I use this? ………………………………………………… |
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I want to record data from a solar power system… ……………… |
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I want to record signals from automobiles… ……………………… |
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11 I want to save high-speed data in real time………………………… |
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I want to record logic and pulse signals… ………………………… |
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Touch screen for intuitive operation… ……………………………… |
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What can I do with FFT analysis functions? … …………………… |
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I want to use numerical/waveform calculation functions… ……… |
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What type of PC analysis software is available?………………… |
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What are the different data communication methods? …………… |
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I need to configure the CAN settings……………………………… |
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What level of environmental resistance does the MR8875 offer? |
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What accessories and options are available? … ………………… |
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Application Example 1………………………………………………… |
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Magnetic field measurement and FFT analysis |
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Application Example 2………………………………………………… |
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Energy-saving measures for machine tools |
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Application Example 3………………………………………………… |
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Phase synchronized testing at power plants |
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Application Example 4………………………………………………… |
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Timing testing of circuit breakers at power plants and electrical |
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substations
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Introduction
This user guide introduces the MR8875 Memory HiCorder’s various characteristics and applications. It is designed to be used to extend distributors’ and customers’ knowledge of the product.
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What is the Memory HiCorder MR8875? |
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The Memory HiCorder MR8875 provides capability for recording 16 high-speed analog channels and 8 logic signals in a compact,
A4-size footprint. It is Hioki’s first Memory HiCorder model to feature a touch panel to enable intuitive operation.
Simple touch screen controls
Flip the screen when the input terminals are positioned at the bottom.
Full view
Left side:
Power connector AC adapter outlet Power port for
Differential Probes (x3)
Top:
Input module slots (for up to 4 modules)
84mm
224 mm
Right side:
Interface SD Card slot
Logic input port I/O port
298 mm
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What types of input modules are available? |
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Five input modules are available: Analog Units (2 types), Voltage/ Temperature Unit, Strain Unit, and CAN Unit.
Install input modules according to your specific needs
(4 modules can be installed at the same time).
λ Analog Unit MR8901
500 kS/s, 4 channels, 150 V DC isolated input
λ Voltage/Temp Unit MR8902
100 S/s, 15 channels, up to 100 V, support 9 thermocouple types
λ Strain Unit MR8903
200 kS/s, distortion/voltage 4 channels, converter cable included
λ CAN Unit MR8904
Networking speed 10 k to 1 Mbps, equivalent of 15 analog channels
λ Analog Unit MR8905
1000 V DC, 2 channels, 700 V AC direct input, RMS value measurements
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Measurement signal |
Optional input module |
Measurement range |
Resolution |
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NEW Voltage |
Analog Unit MR8905 |
10 V f.s. to 1000 V f.s. |
400 µV |
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Observe instantaneous and RMS waveforms |
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Voltage |
Analog Unit MR8901 |
100 mV f.s. to 200 V f.s. |
4 µV |
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Voltage |
Voltage/Temp Unit MR8902 |
10 mV f.s. to 100 V f.s. |
0.5 µV |
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Voltage |
Strain Unit MR8903 |
1 mV f.s. to 20 mV f.s. |
0.04 µV |
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Current |
Analog Unit MR8901 + |
Depends on current sensor(s) in use |
1/1250 div |
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Clamp on current sensor |
* Certain current sensors require a separate power supply |
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RMS AC |
Analog Unit MR8901 + |
100 V rms to 1 kV rms |
1/1250 div |
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voltage |
Differential Probe 9322 |
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Temperature |
Voltage/Temp Unit MR8902 |
200 ˚C f.s. to 2000 ˚C f.s. |
0.01 ˚C |
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(Thermocouple) |
* Upper and lower limit values depend on the thermocouple in use |
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Distortion/Stress |
Strain Unit MR8903 |
400 µε to 20,000 µε f.s. |
0.016 µε |
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Analyze |
CAN Unit MR8904 |
2 ports/unit |
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CAN signal |
* 16bit analog signal: 15ch equivalent * Logic signal: 1bit/16ch equivalent |
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Analog Unit MR8905 -- High-voltage direct input |
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Directly input 1000 V DC and 700 V AC.
Plug the MR8905 into the Memory HiCorder to accommodate a broader range of applications requiring direct input in CAT III (600 V) and CAT II (1000 V) environments.
The instrument is useful in applications that require recording of waveforms for a vehicle’s inverter voltage or primaryand secondaryside ground lines that cannot be combined as a single signal.
Inverter |
Torque sensor |
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Battery |
Encoder |
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Motor |
Load |
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Torque meter |
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Analog Unit |
Max 8ch high- |
MR8905 |
voltage recording |
In factory environments, it can measure voltage flowing on 400 V AC power lines and record both instantaneous waveforms and RMS values.
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Analog Unit MR8901 -- Four-channel measurements |
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Directly input 150 V DC to accept direct input of 100 V AC power supply waveforms. And since it provides four channels of input, it can record twice as many phenomena as the MR8905.
Equipped with four MR8901 units, the MR8875 provides high-speed, isolated recording capability for up to 16 channels.
Solar panel |
DC |
Power conditioner |
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AC measurement |
Commercial power system |
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measurement |
DC measurement |
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Converter |
Inverter |
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Load |
Analog Unit
MR8901
Since channels are isolated up to 100 V AC/DC, signals with different potentials can be recorded at the same time.
Equipment power supply voltage (100 V AC) and control signals can be recorded at the same time. The ability to use problematic phenomena such as a power supply, control signal, or sensor output voltage as a trigger for recording is useful when analyzing the causes of malfunctions.
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Voltage/Temp Unit MR8902 -- Measuring multiple |
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temperature signals |
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A single module lets you measure 15 channels of voltage or temperature (using thermocouples). Temperature can be recorded across up to 60 channels (with 4 modules installed) at a speed of 10 ms.
Voltage/Temp Unit MR8902
Mix-and-match different modules to simultaneously measure high voltage, distortion, CAN signals, and more, alongside temperature.
The plug-in modules use an input amplifier structure.
Customers can freely add or replace modules themselves.
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Strain Unit MR8903 -- Measure minuscule voltage |
levels from strain |
With frequency characteristics up to 20 kHz, you can use accel-
eration sensors to record vibration waveforms.
(Highest sampling rate: 200 kS/s) A bridge box and distortion gauge can also be used to measure distortion. Real-time saving lets you get distortion data over extended periods of time.
Ships standard with a Tajimi’s conversion cable, which is well known in strain measurement.
Strain Unit MR8903
In addition to distortion measurement, a highly sensitive voltage range makes the module perfect for measuring the voltages of low-output voltage sensors.
The unit can be set as low as 50 μV/DIV (1 mV full scale).
The Strain Unit MR8903 is particularly useful for measuring actinometers with low output voltages.
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