Hioki Memory Hicorder 8870-20

Portable 2-channel Memory Recorder for Convenient Data Acquisition and Data Transfer

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 8870-20 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.

Note: Input cords and Battery pack are not included. Purchase the cords appropriate for your application separately. The AC Adapter Z1005 is included as standard.

Compact and easy to carry
• Easy, intuitive operation
• Simple PC connection
• Fast, 1MS/s performance despite the compact size
• Built-in, compact-yet-sharp QVGA-TFT wide LCD

Basic specifications (Accuracy guaranteed for 1 year)

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. input voltage 400 V DC
Frequency characteristics DC to 50 kHz (-3 dB)
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
Measurement functions Memory recorder (high speed recording)
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 Note: Korean (special order only, please contact HIOKI)
External interfaces USB 2.0 mini-B receptacle ×1; Transfers files from the installed CF card to a PC when connected (mass storage class device)
Note: The CF card installed in the HiCorder appears as a removable disk on the PC, but communication functions such as the capability to change HiCorder settings from the PC are not provided.
Printer N/A
Power supply AC adapter Z1005: 100 to 240 V AC (50/60 Hz), 30 VA Max.
Battery pack 9780: Continuous use 2 hours (AC adapter has priority when both are used)
12 V DC supply: 10 to 16 V, 10 VA Max. (Cable available by special order)
Charging functions The installed battery pack charges when the AC adapter is connected. Charging time is about 200 minutes at 25°C.
Notes: Charging time depends on battery condition. Charging is disabled to protect the battery at ambient temperatures out of 5°C to 30°C (41°F to 86°F)
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 8870-20/-21) ×1, Protection sheet 9809 ×1


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