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.
Model No. (Order Code)
Note: Input cords and battery pack are not included.
• Mode for recording instantaneous waveform and RMS fluctuations
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.
|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|
|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.|
|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|
|Compatible models||LabVIEW||MATLAB script|