MEMORY HiCORDER MR8870
Oscilloscope-like Waveform Observation, Plus Recording of RMS Variations - In a Single Device
Hioki Memory HiCorders are high-speed waveform monitoring and recording devices that can simultaneously measure multiple quick-changing phenomena due to complete isolation between channels and from each channel to the ground. The MR8870 is a handheld data acquisition (DAQ) recorder built in with 2 analog channels and 2MW of memory, suitable for elevator maintenance, machine, motor and inverter fault analysis, testing and inspections.
Key Features
- Mode for recording instantaneous waveform and RMS fluctuations
- Save values in real time to a CF card
- Record four channels at once by synchronizing two instruments with the bundled PC application
- Compact and easy to carry
- Fast, 1MS/s performance despite the compact size
- Built-in, compact-yet-sharp QVGA-TFT wide LCD
Model No. (Order Code)
| MR8870-20 | 2ch, English model |
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Record Motor Rush Current
Precisely record motor power-on inrush current waveforms when paired with the 9018-50 Clamp On Probe or 3283 Clamp On Leak HiTester. Measure direct current waveforms with a variety of AC/DC current sensors.
Measure CB Timing
Analyze the relationships of multi-point logic signals and analog waveforms to detect timing issues that can affect power supply circuit breakers. Use logic probes to record relay operations on up to four channels, or use the Differential Probe P9000 for three-phase 440 v power line measurements and for support of CAT III 600 V measurement categories.
Analyze Sequence Controller Issues
When sequence controllers being used in processes such as production and testing lines stop due to errors or generate warning output, potential causes include momentary AC power interruptions and brownouts. The MR8870 is ideal for analyzing the operation of such systems since it can record the correlation of sequence relay signals, AC power circuits, and DC voltage circuits as waveforms using power supply anomalies as a trigger.
Basic specifications
| Number of channels | 2 analog channels + 4 logic channels (standard) Note: Isolated analog channels, isolated input and frame, logic has common GND |
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| Measurement ranges | 10 mV to 50 V/div (10 div full-scale), 12 ranges, Resolution: 1/100 of range | |||||
| Max. rated voltage | Between terminals: 400 VDC, Between terminal to earth: 300 VAC, DC CAT II | |||||
| Frequency characteristics | DC to 50 kHz (-3 dB) | |||||
| Time axis (Memory mode) |
100 µs to 5 min/div, 20 ranges,at 100 points/div resolution, three steps of time-axis magnification from ×2 to ×10, and 9 steps of time-axis compression from ×1/2 to ×1/1,000 | |||||
| Recording intervals (RMS mode) |
1 ms to 1 min., 16 settings, sampling period: 200 μs (fixed) (for AC voltage/current, 1,000 RMS values/sec.), envelope mode always on Note: Only the maximum value and minimum value for each recording interval are recorded. |
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| Measurement functions | Memory recorder (high speed recording), RMS recorder (50/60 Hz, DC only) | |||||
| Memory capacity | 12-bits × 2M-words/ch (1 word = 2 bytes) | |||||
| Removable storage | CF card TYPE I slot ×1 (Up to 2 GB) | |||||
| Display | 4.3-inch WQVGA-TFT color LCD (480 × 272 dots) | |||||
| Displayable languages | English, Japanese | |||||
| Interfaces | USB 2.0 mini-B receptacle ×1, Functionality: Connect the instrument to a PC to send files on the CF card to the PC. The instrument cannot be controlled from a PC. | |||||
| Printer | N/A | |||||
| Power supply | AC Adapter Z1005: 100 to 240 VAC (50/60 Hz) , 30 VA max. (when using the AC adapter and charging the 9780 with the instrument) Battery Pack 9780: 3 VA, continuous operating time of approx. 2 hr. (25°C reference value; when used with the Z1005, the Z1005 takes priority), charging time of 200 min. using the AC adapter (25°C reference value) (option) External DC power: 10 to 16 V, 10 VA max. (connection cord of 3 m or less is available by special-order) |
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| Dimensions and mass | 176 mm (6.93 in)W × 101 mm (3.98 in)H × 41 mm (1.61 in)D, 600 g (21.2 oz) (with the Battery pack 9780 installed) | |||||
| Included accessories | Instruction manual ×1, Measurement guide ×1, AC adapter Z1005 ×1, Strap ×1, USB cable ×1, Application disk (Dedicated program for the MR8870) ×1, Protection sheet 9809 ×1 | |||||
LabVIEW and MATLAB support
| Compatible models | LabVIEW | MATLAB script | ||||
|---|---|---|---|---|---|---|
| MR8870-20 | N/A | N/A | ||||
Storage media (3)
*The CF card includes a PC card adapter.
*PC Card Precaution
Use only PC Cards sold by HIOKI. Compatibility and performance are not guaranteed for PC cards made by other manufacturers. You may be unable to read from or save data to such cards.
Input cable (A) (4)
*Voltage is limited to the specifications of the input section
• Flexible φ 4.1 mm (0.16 in) thin dia.
• Cable allowing for up to 600 V input
• 1.8 m (5.91 ft) length
Red/black set attaches to the ends of the Connection Cord L9790
Red/black set attaches to the ends of the Connection Cord L9790
Red/black set attaches to the ends of the Connection Cord L9790
Input cable (B) (3)
*Voltage is limited to the specifications of the input section
•φ 5.0 mm (0.20 in) dia
•Cable allows for up to 600 V input
•1.8 m (5.91 ft) length
•Includes detachable large alligator clips
•φ 5.0 mm (0.20 in) dia.
•Cable allows for up to 300 V input
•1.7 m (5.58 ft) length
•Small alligator clip
Attaches to the tip of the banana plug cable, Red/Black: 1 each, 185 mm (7.28 in.) length, CAT II 1000 V
Input cable (D) (2)
*Voltage to ground is within this product's specifications. Separate power source is also required.
Custom cable (0)
*For P9000. Inquire with your Hioki distributor.
(1) Bus powered USB cable
(2) USB(A)- Micro B cable
(3) 3-prong cable
Input cable (E) (2)
*Voltage to ground is within this product's specifications. Separate power source is also required.
100 to 240V AC
Non-contact Voltage measuring (0)
Logic signal measurement (2)
* Only the small terminal types can be used.
* The 9323 is not required for the small-terminal types 9327, 9320-01, 9321-01 and MR9321-01.
Up to 200 A (High precision) (6)
Separate power supply (CT955x) is required in order to use a high-precision current sensor.
Only sensors with ME15W (12-pin) terminals can be connected to the CT955x.
The separately available CONVERSION CABLE CT9900 is required in order to use a sensor with PL23 (10-pin) terminal.
Up to 1000 A (For AC/DC) (6)
Separate power supply (CT955x) is required in order to use a high-precision current sensor.
Only sensors with ME15W (12-pin) terminals can be connected to the CT955x.
The separately available CONVERSION CABLE CT9900 is required in order to use a sensor with PL23 (10-pin) terminal.
PL23 (10-pin) - ME15W (12-pin) conversion (1)
Convert PL23 (10-pin) terminal to ME15W (12-pin) terminal
POWER SUPPLY for Current Sensors (4)
*A separate power supply (CT955x) is required in order to use a high-precision current sensor.
*Only sensors with ME15W (12-pin) terminals (-05 type) can be connected to the CT955x. *The separately available Conversion Cable CT9900 is required in order to use a sensor with PL23 (10-pin) terminal.
Cord has insulated BNC connectors at both ends, 1.6 m (5.25 ft) length
Precautions when connecting a high-precision current sensor to a Memory HiCorder (0)
Connecting to the MR8880/MR8875/MR8870
• High-precision current sensor (ME15W) + CT9555 + BNC cable MR8870
• High-precision current sensor (PL23) + CT9900 + CT9555 + BNC cable → MR8870
100 A to 2000 A (For AC/DC) (8)
The CM7290 (available separately) is required in order to use these current sensors.
500 A to 5000 A (For AC) (3)
*For commercial power lines, 50 Hz/60 Hz
Leak Current (2)
*For commercial power lines, 50 Hz/60 Hz
100 V to 240 V AC
Power supply (2)
*Z1005 is a bundled accessory
100 to 240 V AC
NiMH, Charges while installed in the main unit
Other options (4)
*The 9809 is a bundled accessory
Cord has insulated BNC connectors at both ends, 1.6 m (5.25 ft) length
Includes compartment for options, resin-coated
For LCD protection, pairs of sheets
Includes space for small items, neoprene rubber
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Brochure: MEMORY HiCORDER MR8870
English
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MEMORY HiCORDER MR8870, MR8870-20, MR8870-30, MEMORY HiCORDER SET MR8870-90
Test Report
Japanese
English Ver.00 -
MEMORY HiCORDER MR8870-20
Measurement Guide (Memory Recorder)
English
Ver.00
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MEMORY HiCORDER MR8870-30
Measurement Guide (Memory Recorder)
Simplified Chinese
Ver.00
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MEMORY HiCORDER MR8870-20
Measurement Guide (RMS Recorder)
English
Ver.01
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MEMORY HiCORDER MR8870-30
Measurement Guide (RMS Recorder)
Simplified Chinese
Ver.01
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MEMORY HiCORDER MR8870-20
Instruction Manual
English
Ver.03
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MEMORY HiCORDER MR8870-30
Instruction Manual
Simplified Chinese
Ver.03
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MEMORY HiCORDER MR8870-30
Ver.02
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MEMORY HiCORDER MR8870-30
Ver.00
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MEMORY HiCORDER MR8870
Ver.01
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MEMORY HiCORDER MR8870-20
Ver.01