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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.
| Number of channels | 2 analog channels + 4 logic channels (standard)
Note: Isolated analog channels, isolated input and frame, logic has common GND |
| 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 |
| Safety Rating | 300 V 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. |
| 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) |
| 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) |
| 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 |
