Hioki MR8875 User Manual
Introducing the Portable Multi-channel Data Acquisition Recorder
MEMORY HiCORDER MR8875
User Guide
Table of Contents
Introduction ………………………………………………………………
1 What is the Memory HiCorder MR8875? …………………………
2 What types of input modules are available? ……………………
Analog Unit MR8905 -- High-voltage direct input
3
4
Analog Unit MR8901 -- Four-channel measurements
5
Voltage/Temp Unit MR8902 -- Measuring multiple temperature signals
6
Strain Unit MR8903 -- Measure miniscule voltage levels from strain
7
CAN Unit MR8904 -- Record CAN and analog signals simultaneously
8 Where can I use this? ………………………………………………
9 I want to record data from a solar power system ………………
10 I want to record signals from automobiles ………………………
11 I want to save high-speed data in real time ………………………
12 I want to record logic and pulse signals …………………………
13 Touch screen for intuitive operation ………………………………
14 What can I do with FFT analysis functions? ……………………
15 I want to use numerical/waveform calculation functions ………
16 What type of PC analysis software is available? …………………
17 What are the different data communication methods? …………
18 I need to congure the CAN settings………………………………
19 What level of environmental resistance does the MR8875 offer?
20 What accessories and options are available? …………………
21 Application Example 1 ………………………………………………
Magnetic eld measurement and FFT analysis
22 Application Example 2 ………………………………………………
Energy-saving measures for machine tools
23 Application Example 3 ………………………………………………
Phase synchronized testing at power plants
24 Application Example 4 ………………………………………………
Timing testing of circuit breakers at power plants and electrical
substations
………………………
…………………
P. 3
P. 4
P. 5
P. 6
P. 7
P. 8
P. 9
P. 10
P. 11
P. 12
P. 13
P. 14
P. 15
P. 16
P. 17
P. 18
P. 19
P. 20
P. 21
P. 22
P. 23
P. 24
P. 25
P. 26
P. 27
2
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.
3
What is the Memory HiCorder MR8875?
1
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 rst 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)
84 mm
224 mm
298 mm
Right side:
Interface
SD Card slot
Logic input port
I/O port
4
What types of input modules are available?
2
Five input modules are available: Analog Units (2 types), Voltage/
Temperature Unit, Strain Unit, and CAN Unit.
Install input modules according to your specic needs
(4 modules can be installed at the same time).
l Analog Unit MR8901
500 kS/s, 4 channels, 150 V DC isolated input
l Voltage/Temp Unit MR8902
100 S/s, 15 channels, up to 100 V, support 9 thermocouple types
l Strain Unit MR8903
200 kS/s, distortion/voltage 4 channels, converter cable included
l CAN Unit MR8904
Networking speed 10 k to 1 Mbps, equivalent of 15 analog channels
l Analog Unit MR8905
1000 V DC, 2 channels, 700 V AC direct input, RMS value measurements
Measurement signal Optional input module Measurement range Resolution
NEW
RMS AC
Temperature
(Thermocouple)
Distortion/Stress
CAN signal
Voltage
Voltage
Voltage
Voltage
Current
voltage
Analyze
Analog Unit MR8905
Analog Unit MR8901
Voltage/Temp Unit MR8902
Strain Unit MR8903
Analog Unit MR8901 +
Clamp on current sensor
Analog Unit MR8901 +
Differential Probe 9322
Voltage/Temp Unit MR8902
Strain Unit MR8903
CAN Unit MR8904
10 V f.s. to 1000 V f.s.
Observe instantaneous and RMS waveforms
100 mV f.s. to 200 V f.s. 4 µV
10 mV f.s. to 100 V f.s. 0.5 µV
1 mV f.s. to 20 mV f.s. 0.04 µV
Depends on current sensor(s) in use
* Certain current sensors require a separate power supply
100 V rms to 1 kV rms
200˚Cf.s.to2000˚Cf.s.
* Upper and lower limit values depend on the thermocouple in use
400 µε to 20,000 µε f.s. 0.016 µε
* 16bit analog signal: 15ch equivalent * Logic signal: 1bit/16ch equivalent
2 ports/unit
1/1250 div
1/1250 div
400 µV
0.01˚C
—
5
3
Analog Unit MR8905 -- High-voltage direct input
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 primary- and secondary-
side ground lines that cannot be combined as a single signal.
Battery
Analog Unit
MR8905
Inverter
Torque meter
Torque sensor
Encoder
Motor Load
Max 8ch high-
voltage recording
In factory environments, it can measure voltage owing on 400 V AC
power lines and record both instantaneous waveforms and RMS values.
6
Analog Unit MR8901 -- Four-channel measurements
4
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
Analog Unit
MR8901
DC
measurement
Power conditioner
DC measurement
Converter
Inverter
AC measurement
Commercial power system
Load
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 phe-
nomena such as a power supply, control signal, or sensor output volt-
age as a trigger for recording is useful when analyzing the causes of
malfunctions.
7
Voltage/Temp Unit MR8902 -- Measuring multiple
5
A single module lets you measure 15 channels of voltage or tem-
perature (using thermocouples). Temperature can be recorded
across up to 60 channels (with 4 modules installed) at a speed of
10 ms.
Mix-and-match different modules to simultaneously measure high
voltage, distortion, CAN signals, and more, alongside temperature.
temperature signals
Voltage/Temp Unit MR8902
The plug-in modules use an
input amplier structure.
Customers can freely add or
replace modules themselves.
8
Strain Unit MR8903 -- Measure minuscule voltage
6
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.
In addition to distortion measurement, a highly sensitive voltage
range makes the module perfect for measuring the voltages of
levels from strain
Ships standard with a
Tajimi’s conversion cable,
which is well known in
strain measurement.
Strain Unit MR8903
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.
9
Loading...