HIOKI LR8431 Memory HiLogger – 10 Channel

Your Versatile Personal 10-channel Logger


  • High Accuracy in a Compact Design
  • Offers fast 10ms sampling speeds of all 10 channels simultaneously
  • Featuring USB Flash Drive and Improved Accuracy!


Read full description and specs


Hioki Memory HiLoggers are high-speed data loggers for recording multiple channels of:

  • Voltage
  • Temperature
  • Pulse
  • Rotation signals

Providing complete isolation between channels and strong noise resistance.

The LR8431 logs data at 10ms speeds across 10 channels simultaneously, and features a bright colour LCD for crystal clear waveform displays.



This Compact Logger EXCELS in a broad range of Settings, from Production Lines to Research and Development

For applications such as
– Evaluating motors and inverters used in electric and hybrid vehicles
The LR8431-20 enables stable, low-noise measurement of high-speed, high-resistance targets.

– Efficiency measurement and performance evaluation of air conditioning equipment
The LR8431-20 supports simultaneous, multi-point measurement, for example of input and output at multiple air conditioning registers or the temperature of internal components.

– Temperature measurement and performance evaluation of internal components in electronic equipment
Used with a wind velocity converter, the LR8431-20 can measure cooling efficiency inside equipment enclosures.



10-Channel Logger still fits in the Palm of your hand

Ultra-compact for convenient portability.

There’s no need to worry about differing potentials of measurement objects when measuring temperature and voltage.
All ten analog channels are isolated.
Even when measuring temperature and voltage at the same time, interchannel interference and electric shock hazards are eliminated.
The four pulse channels are ideal for counting revolution pulses to measure rotation speed. (Pulse inputs share common ground.)

*Isolation between channels is possible through the use of semi-conductor relays.
Voltage exceeding the product specifications, such as that originating from lightning surges or other sources, should never be applied between each channel; otherwise the relays will short and the recorder will be damaged.



A Data Logger with a 10 ms Sampling and Recording across all Channels

Abrupt changes in load need to be measured during development of EV, HV, PHV for which multi-channel, 10 ms sampling is essential.
This Memory HiLogger can track waveforms that could not be followed with the 100 ms sampling interval previously available.



Featuring USB Flash Drive and CF Card Support

The LR8431-20 can record measurement data on a USB flash drive for easy transfer to a computer.
In long-term measurement applications, it can also record to reliable Compact Flash cards for increased peace of mind.

Replace storage media during real-time recording.
Switch out fully loaded storage media with new ones while recording without stopping the measurement so that you can analyse any data recorded so far.

* During high-speed recording, be sure to insert the new storage media within 2 minutes of removing the former.
*Use only HIOKI CF cards, which are manufactured to strict industrial standards, for long-term storage of important data. Operation of non-HIOKI CF cards is not guaranteed.



Included PC Application with Measurement and Analysis Functionality

The supplied Logger Utility software enables processing of measurement data on a PC.

Use the supplied Logger Utility software to record data on a PC in real-time.
View past data during recording.

Connect the PC to the HiLOGGER using USB.

Basic Specifications

Accuracy guaranteed: 1 year, Accuracy guarantee period after adjustment made by Hioki: 1 year
Number of channels Analog: 10 isolated channels using scanning input method (M3 mm dia. screw terminal block)
Pulse: 4 channels (All pulse inputs share common ground with the main unit)
Measurement parameters Voltage : ±100 mV to ±60 V, 1-5V f.s. 6 ranges, Max. resolution 5µV
Temperature (thermocouples) : -200 ˚C to 1800 ˚C (depend on the sensor), 1 range (K, J, E, T, N, R, S, B), Max. resolution 0.1 ˚C
Temperature (Pt 100 sensor) : not available
Humidity : not available
Totalized pulses : 0 to 1000M pulse, 1 range (No-voltage ‘a’ contact, open collector or voltage input), Max. resolution 1 pulse
Rotation count : 0 to 5000/n (r/s) f.s. 1 range (No-voltage ‘a’ contact, open collector or voltage input), Resolution 1/n (r/s) Note: n = pulses per rotation (1 to 1,000)
Max. allowable input DC 60 V (Analog input), DC -5 V to 10 V (Pulse input)
Max. rated voltage to earth AC 30 Vrms, DC 60 V (Upper limit voltage that does not cause damage when applied between input channel and chassis, and between each input channels)
Recording intervals 10 ms to 1 hour, 19 selections (All input channels are scanned within each recording interval.)
Selectable filters 50 Hz, 60 Hz, or OFF (digital filtering of high frequencies on analog channels)
Memory capacity Internal storage: 3.5 M-words, External storage: CF card or USB memory stick (only the HIOKI CF card is guaranteed for correct operation)
External interface USB 2.0 mini-B receptacle ×1; Functions: Control from a PC, Transfers files from the installed CF card to a PC (cannot transfer files from the connected USB memory stick to a PC via USB communication), Data copy between CF card and USB memory stick
Display 4.3-inch WQVGA-TFT color LCD (480 × 272 dots)
Functions Save data to the CF card or USB memory stick in real time, Numerical Calculations, etc.
Power supply AC adapter Z1005: 100 to 240 VAC (50/60 Hz)
Battery pack 9780: Continuous use 2.5 hours
12 V DC supply: 10 to 16 V (please contact HIOKI distributor for cable; less than 3 m/9.84 ft cable length)
Dimensions and mass 176 mm (6.93 in) W × 101 mm (3.98 in) H × 41 mm (1.61 in) D, 550 g (19.4 oz) (Battery pack 9780 not installed)
Accessories Measurement Guide ×1, CD-R (Instruction manual PDF, Logger Utility Instruction Manual PDF, Data acquisition application program Logger Utility) ×1, USB cable ×1, AC adapter Z1005 ×1


Pickup at a NWI Office Location

If you do not want to pay for delivery or need to receive the item ASAP, you can pick the item up at one of our five (5) Australian offices. Just bear in mind not all offices will have everything in stock. Please call our 1300 669 162 number to see if your item is in stock at your local office.  

Interstate Deliveries:

Delivery costs are based off your location in Australia. NWI Group uses TNT Australia for all domestic deliveries.  

Estimated Delivery Timeframe:

If you opted to collect at a NWI office location, you will receive an email to inform you when your goods are ready for collection. If you opted for delivery, you would receive an email when the goods have been despatched to the couriers with details so you can track your order. We aim to despatch all orders within 1-2 business days. In the unusual event of a delay to the despatch of your order you will be contacted at the earliest opportunity. Once the order has been despatched the estimated delivery time is as follows:
  • Metro (Exclude: Hobart Metro) 1 -2 business day:
  • Hobart Metro 3-4 business days
  • Regional Areas: 3-4 business days:
  • Remote Areas: 6-9 business days
Please note that these delivery timeframes are estimates and are not guaranteed.  

Returns Policy

Changed your mind? No worries. You just need to get the product back to the NWI office it was shipped from (this is on your receipt) within 30 days, unused and in its original packaging and we will give you a refund (excluding delivery costs – terms and conditions apply) Special order items are excluded from this returns policy.

General Data Sheets

View Datasheet

Why Choose NWI?

Since its inception in 1994, NWI Group has been committed to providing a service of quality in the sale, calibration and service of measuring equipment used in laboratories and manufacturing companies. Our strive for continuous improvement is part of our quality policy statement. A family-owned business, we have offices throughout Australia. Our product range covers fine precision measuring equipment to large industrial weighbridges, process instrumentation and automation software. Our calibration services for process and laboratories through our NATA accreditation guarantees our commitment to correct measurement and customer satisfaction.

Our Mission

It is our aim to provide our customers with levels of service that consistently exceed their expectations. This recognises that the customers ongoing, long-term relationship is crucial for business growth and development.

Our Vision

Provide individuals and companies with high quality and reliable measuring equipment, technology, and calibration services now and for future generations.


NATA Accreditation for:
  • Mass & Weighing
  • Volume & Density
  • Electrical Metrology
  • Time & Frequency Metrology
  • Temperature & Humidity Metrology
NMI Trade Measurement Servicing Licence for Weighing & Mass.



Unit 1, 88 Magowar Rd, Girraween, 2145


11/5 Agosta Drive, Laverton North, 3026


3A Wilford Ave, Underdale, 5032


2D/919 Nudgee Road Banyo QLD 4014


1/19 Industry St Malaga WA 6090

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Phone: 1300 669 162