MEMORY HiCORDER
MR8870
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.
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.
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Number of channels |
2 analog channels + 4 logic channels (standard) |
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Measurement ranges |
10 mV to 50 V/div (10 div full-scale), 12 ranges, Resolution: 1/100 of range |
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Max. rated voltage |
Between terminals: 400 VDC, Between terminal to earth: 300 VAC, DC CAT II |
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Frequency characteristics |
DC to 50 kHz (-3 dB) |
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Time axis |
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 |
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Recording intervals |
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 |
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Measurement functions |
Memory recorder (high speed recording), RMS recorder (50/60 Hz, DC only) |
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Memory capacity |
12-bits × 2M-words/ch (1 word = 2 bytes) |
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Removable storage |
CF card TYPE I slot ×1 (Up to 2 GB) |
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Display |
4.3-inch WQVGA-TFT color LCD (480 × 272 dots) |
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Displayable languages |
English, Japanese |
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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. |
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Printer |
N/A |
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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) |
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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) |
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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 |
