MR8875 - Portable, modular memory recorder, 500 kS/s, 16 isolated ch., 1000 V direct input, touchscreen

Durable hard-shell case with wheels and telescoping handle, precisely fitted for MR8875 and accessories.

The MR8902 Voltage/Temp Unit is a 15-channel voltage and thermocouple input module for the MR8875 memory recorder, designed for stable multi-point DC voltage and temperature acquisition in demanding industrial environments.Each of the 15 channels can be individually configured for voltage or thermocouple measurement. With 16-bit A/D conversion and ranges from 500 µV/div up to 5 V/div, the module enables precise low-level signal acquisition across a wide measurement span. Simultaneous channel scanning supports synchronized multi-point monitoring at update rates down to 10 ms. The unit supports thermocouple types K, J, E, T, N, R, S, B and W, with selectable internal or external reference junction compensation. Internal compensation accuracy is ±0.5°C (added to measurement accuracy). Thermocouple broken-wire detection is integrated and switchable. High noise immunity supports reliable operation in electrically demanding environments, with a normal mode rejection ratio of ≥50 dB and a common mode rejection ratio up to 140 dB (with digital filter). Selectable 50 Hz or 60 Hz digital filtering enhances measurement stability under industrial mains conditions. Typical applications include multi-channel temperature profiling, environmental and thermal validation testing, industrial DC signal monitoring, and long-term trend recording in laboratory and field environments. Technical specificationsChannels: 15 (voltage / thermocouple) Measurement: Voltage, temperature (thermocouple); types K, J, E, T, N, R, S, B, WRe5-26Range / resolution: 500 µV to 5 V/div, 16-bit A/DInput: Push terminal, 1 MΩUpdate rate: 10 ms, 20 ms, 500 ms, 2 s Filter: Digital filter 50 Hz, 60 Hz, OFF Accuracy: ±0.1 % f.s. Voltage limits: 100 V DC input, 100 V AC/DC to earth

The MR8901 Analog Unit is a 4-channel voltage input module for the memory recorder MR8875. It enables voltage measurement with simultaneous sampling across all channels. The module provides four isolated BNC input connectors with an input resistance of 1 MΩ and an input capacitance of 10 pF. It supports measurement ranges from 5 mV to 10 V/div with 11 selectable ranges. Simultaneous sampling at up to 500 kS/s across all channels allows acquisition of transient and dynamic signals. The frequency characteristics extend from DC to 100 kHz (–3 dB). The maximum allowable input voltage is 150 V DC, and the maximum rated voltage to earth is 100 V AC/DC.Typical applications include transient analysis, switching waveform recording, dynamic signal measurement, and multi-channel signal acquisition in laboratory and industrial environments. Technical specificationsNumber of channels: 4 (voltage measurement) Input connectors: Isolated BNC, 1 MΩ, 10 pFMeasurement range: 5 mV to 10 V/div (11 ranges) Sampling rate: 500 kS/s (simultaneous across all channels) Frequency characteristics: DC to 100 kHz (–3 dB)Maximum input voltage: 150 V DCMaximum rated voltage to earth: 100 V AC/DCLow-pass filter: 5 / 50 / 500 Hz, 5 kHz, OFF Input coupling: DC, GND Accuracy: ±0.5 % of full scale 

The MR8904 CAN Unit is a 2-port CAN interface module for the memory recorder MR8875. It enables acquisition and output of CAN communication signals. The module supports CAN communication according to ISO 11898 and SAE J2411 standards. Each port can be configured for high-speed CAN, low-speed CAN, or single-wire CAN. CAN messages can be received and transmitted, and acknowledgment settings can be configured. Received CAN signals can be converted into analog or logic channels for recording. Up to 15 analog channels (16-bit equivalent) and 16 logic channels can be output. Signal mapping depends on bit length.The module provides ID-trigger functionality and outputs a pulse signal when a specified CAN ID is received. Response time is within 200 μs after message reception.Typical applications include CAN bus monitoring, signal analysis, and synchronized recording of communication data in laboratory and industrial environments. Technical specifications CAN ports: 2 (D-sub, 9-pin)Standards: ISO 11898 (CAN 2.0b), ISO 11898-1/-2/-3, SAE J2411 Interface: High-speed CAN, low-speed CAN, single-wire CAN (per port selectable)Baud rate: 50 kbps to 1 Mbps (high-speed), 10 kbps to 125 kbps (low-speed), 10 kbps to 83.3 kbps (single-wire) Signal output: up to 15 analog channels (16-bit equivalent), 16 logic channels Signal mapping: 1 to 32-bit signals (channel allocation depending on bit width)ID trigger: pulse output on logic channelResponse time: ≤200 μsTerminator: 120 Ω ±10 %, switchableACK control: ON/OFF 

The MR8905 Analog Unit is a 2-channel voltage input module for the memory recorder MR8875. It enables voltage measurement of instantaneous values and AC RMS values. Each channel supports measurement ranges from 500 mV to 50 V/div. The module uses 16-bit A/D conversion and supports simultaneous sampling across both channels at up to 500 kS/s. The frequency characteristics extend from DC to 100 kHz (–3 dB).The module supports RMS measurement with defined accuracy and response time. Input coupling modes DC, AC-RMS, and GND are selectable. The maximum allowable input voltage is 1000 V DC or 700 V AC. The maximum rated voltage to earth is CAT II 1000 V AC/DC and CAT III 600 V AC/DC. Typical applications include voltage measurement, RMS evaluation, and waveform analysis in laboratory and industrial environments. Technical specifications Channels: 2 (voltage, instantaneous / AC RMS selectable) Input: banana connector, 4 MΩ, <1 pFMeasurement range: 500 mV to 50 V/divAccuracy: ±0.5 % f.s. (instantaneous), ±1.5 % / ±3 % f.s. (RMS, frequency-dependent) Sampling / resolution: 500 kS/s simultaneous, 16-bit (1/1250) Frequency characteristics: DC to 100 kHz (–3 dB) Low-pass filter: 5, 50, 500 Hz, 5 kHz, OFF Input coupling: DC, AC-RMS, GNDMaximum input: 1000 V DC, 700 V AC Maximum rated voltage to earth: CAT II 1000 V AC/DC, CAT III 600 V AC/DC 

The MR8903 Strain Unit is a 4-channel strain and low-voltage input module for the memory recorder MR8875. It enables strain and voltage measurement with configurable inputs for each channel.Each channel can be configured for strain gauge or low-level voltage measurement. The module uses 16-bit A/D conversion and supports simultaneous sampling across all channels at up to 200 kS/s. The frequency characteristics extend from DC to 20 kHz. The strain measurement function supports bridge sensors from 120 Ω to 1 kΩ with a bridge excitation voltage of 2 V. Measurement ranges span from 20 µε/div to 1000 µε/div. Selectable low-pass filters (5 Hz, 10 Hz, 100 Hz, 1 kHz, OFF) are available. The maximum allowable voltage between input terminals and earth is 30 V AC rms or 60 V DC. The maximum bridge input voltage is 10 V DC. Typical applications include strain measurement, vibration analysis, and multi-channel data acquisition in laboratory and industrial environments. Technical specificationsChannels: 4 (strain/voltage selectable per channel, auto-balance ±10000 με) Input: ≥1 MΩ, bridge 120 Ω to 1 kΩ, excitation 2 V ±0.05 VMeasurement ranges: 20–1000 με/div (strain), 50–1000 μV/div (voltage) Accuracy: ±0.5 % f.s. (range-dependent, incl. offset) Sampling / resolution: 200 kS/s simultaneous, 16-bit (1/1250)Frequency characteristics: DC to 20 kHz (+1/−3 dB)Low-pass filter: 5, 10, 100 Hz, 1 kHz, OFF Maximum voltage: 10 V DC input, 30 V AC rms / 60 V DC to earth 

The Z1003 is a 7.2 V DC, 4500mAh Nickel-Metal Hydride (Ni-MH) rechargeable battery pack designed for use with Hioki devices such as the MR8875, PQ3198/PW3198, and PQ3100. It provides reliable power, ensuring extended operation in the field and in demanding environments. Technical Details: Battery Type: Ni-MH Voltage: 7.2 V DC Capacity: 4500mAh Compatible Devices: MR8875, PQ3198/PW3198, PQ3100

The Z1002 is a universal power supply unit for mains voltages from 100 V to 240 V AC, 50/60 Hz, which provides 12 V DC, 5.25 A max (63 W). It is suitable for the Hioki products CT9557, MR8875, MR8880, PW3198, PQ3100 and PQ3198.Technical details: Input range: 100 V AC to 240 V AC Output: 12VDC, 5.25A, Pmax 63W Residual ripple & noise: 100mVpp DC connector: angled 5.5mm barrel plug (inner diameter 2.5mm)

The Hioki Wave Processor 9335 is advanced software designed for Memory recorder, allowing users to display, convert, calculate, and print waveform data on a PC. It supports large volumes of data recorded by Memory Recorders, providing features like X-Y graph display, CSV export, and rich printing options, making it ideal for data analysis and report generation.Technical Details: Supported Devices: Hioki Memory Recorder models such as MR6000, MR8875, 8807-20, etc. Operating System: Windows 10/8/7 (32/64-bit) Display Functions: Waveform, X-Y graph, cursor, scroll, gauge display Data Conversion: CSV, tab-delimited, batch conversion File Loading: MEM, REC, RMS, POW formats Print Functions: Print image file (EMF format)

The Hioki 9322 Differential Probe is a versatile 3-in-1 probe designed for the floating measurement of high-voltage waveforms, detecting power line surge noise, and providing true RMS rectified output of high-voltage AC. With the ability to handle up to 2000 V DC and 1000 V AC (CAT II), the 9322 ensures safe and accurate measurements even in demanding environments. This probe is compatible with the Memory Memory recorder series and can be powered via an AC adapter or Hioki’s Probe Power Unit Z5021. It offers a wide frequency range for detecting high-frequency components, making it ideal for inverter circuits and power supply noise detection. Technical details: Measurement functions: o DC mode: Waveform monitor output, DC to 10 MHz ±3 dB o AC mode: Detection of power line surge noise, 1 kHz to 10 MHz ±3 dB o RMS mode: Rectified RMS output of DC and AC voltages, DC, 40 Hz to 100 kHz o Response speed: 200 ms or less (400 V AC) Max. allowable input: 2000 V DC, 1000 V AC Max. rated voltage to earth: o 1000 V AC/DC (CAT II) when using the Grabber Clip L9243 o 1000 V AC/DC (CAT II), 600 V AC/DC (CAT III) when using alligator clips Output: Voltage division ratio 1/1000, BNC terminal (3-mode selectable: DC/AC/RMS) • DC amplitude accuracy: ±1% f.s. (1000 V DC or less), ±3% f.s. (2000 V DC) RMS amplitude accuracy: ±1% f.s. (DC, 40 Hz to 1 kHz), ±4% f.s. (1 kHz to 100 kHz)Input resistance and capacity: o H-L: 9 MΩ, approx. 10 pF (at 100 kHz) o H-case, L-case: 4.5 MΩ, approx. 20 pF (at 100 kHz) Power supply: o General requirement: +5 V to +12 V, less than 300 mA (DC jack OD 5.5 mm, ID 2.1mm)Hioki provided power supplies: o AC Adapter 9418-15 o Z5021combined plus Power Cord 9248 o Use of Logic terminal on Memory Recorder plus Power Cord 9324 o Use of sensor terminal of F/V Unit 8940 plus Power Cord 9325 o Use of DC power output terminal attached to the input unit for the 8855 through Power Cord 9328 o Via the 8860 series Probe Power Unit 9687 plus Power Cord 9248 Dimensions and mass: 70 mm (W) × 150 mm (H) × 25 mm (D), 350 g, Cord length: Input 46 cm, Output 1.3 m

The Connection Cord 9166 is an accessory for the HIOKI memory recorders MR6000, MR6000-01, MR8740T, MR8740, MR8741, MR8827, MR8847A and MR8848, or their measurement modules. It is equipped with a metal BNC connector and small crocodile clips. The small crocodile clips make the connection cord suitable for measurements in confined spaces. In combination with compatible memory recorders, signals can be captured and recorded for analysis. Typical applications: Voltage measurements on electronic circuit boards in inverters, switched-mode power supplies and other electronic circuits Signal and voltage measurements at test points, IC terminals, connectors and exposed wiring Measurements in confined spaces in development, service and laboratory environments Compatible devices (associated measurement module in parentheses): MR8870MR8880 MR8875: (MR8901) MR6000, MR6000-01: (8966, 8968, 8972, U8975, U8976, U8978)MR8827: (8966, 8968, 8972) MR8848: (8966, 8968, 8972, U8975, U8978) MR8740T: (8966, 8968, 8972, U8975, U8978, U8991) MR8740: (8966, 8968, 8972) MR8741: (8966, 8968, 8972)