11 Dec 2020 : Business alliance between measurement and calibration solutions vendor ETAS and electrical measuring instrument manufacturer HIOKI

Power Consumption

Business alliance between measurement and calibration solutions vendor ETAS and electrical measuring instrument manufacturer HIOKI

December 11, 2020 – Nagano, Japan

ETAS K.K. (Headquarters: Nishi-ku, Yokohama, President & Representative Director, Takayuki Yokoyama, hereinafter, “ETAS”), which provides measurement and calibration solutions for ECU software and HIOKI E.E. Corporation (Headquarters: Ueda, Nagano, President & CEO, Kazutoshi Hosoya, hereinafter “HIOKI”), which engages in electrical measuring instrument development, production, sales, and services announce a business alliance. The purpose of this alliance is to fuse high-precision electrical measuring technology and measurement and calibration solutions, which are essential to improving the efficiency of electric powertrain development.

Market background

In the automotive industry, there is currently a demand for the massive technology innovation represented by CASE (Connected, Autonomous, Shared, and Electric).

Larger capacity for storage batteries represented by lithium-ion batteries, inverters with increased switching frequencies through the evolution from IGBTs to SiC, and new electrical measuring technologies based on the higher responsiveness of the motor system are needed, particularly in the electrification arena. There is also demand for the efficient development of ECU software for controlling these technologies.

Effect of the business alliance

The solutions provided by ETAS will be fused with high-precision electrical measuring technology provided by HIOKI for everything from advanced development of electric powertrains to actual vehicle experiments.
As one example, in electric powertrain development, motor operating conditions and output are determined by using ECU software to calibrate voltage and current while measuring electrical parameters such as voltage/current values and power loss. Synchronizing ECU software calibration using ETAS’s INCA with electric energy measurement using HIOKI’s Power Analyzer PW6001 will greatly contribute to more efficient electric powertrain development.

Furthermore, HIOKI has realized the SP7001 non-contact CAN/CAN FD sensor to apply electrical measuring technology. Combining this sensor with ETAS’s INCA will make it possible to measure information from vehicle-mounted networks without fabricating harnesses.

Solution features
Add-ons will enable HIOKI power analyzer measurement data to be recorded in INCA. Connecting ETAS’s INCA with HIOKI’s PW6001/PW3390 will enable seamless execution from actual PCU verification to calibration on test benches.

Solution advantages
Recording ECU control values and CAN communication via a single measurement data element can enhance analysis efficiency. Expressing power analyzer measurement data with INCA’s rich GUI will prevent worker analysis errors. Furthermore, since power analyzer settings can be changed from INCA, main unit operations can be reduced.
Additionally, power analyzer measurement data can be input to INCA directly via digital communication without errors, which will improve calibration accuracy. This also contributes to high-precision plant model generation since high-precision data can be obtained when plant models are generated from actual measurement data.

Figure: INCA Add-on HIOKI Integrated High-Precision Electrical Measurement Package

[Left] Takahiro Okazawa, Director and Senior Managing Executive Officer in-
Charge of Sales and Services, HIOKI E.E. Corporation
(Scheduled to take office as President & CEO as of January 1, 2021)

[Right] Takayuki Yokoyama, President & Representative Director, ETAS K.K.


About ETAS K.K.
ETAS provides innovative solutions for the development of embedded systems for the automotive industry and other sectors of the embedded industry. As a systems provider, ETAS supplies a multifaceted portfolio that covers the range from integrated tools and tool solutions to engineering services, consulting, train¬ing, and support. Holistic IoT security solutions are offered via ETAS subsi¬diary ESCRYPT. Established in 1994, ETAS GmbH is a 100-percent subsidiary of the Bosch Group, with international subsidiaries and sales offices in Europe, North and South America, and Asia. Find further information online at www.etas.com.

About HIOKI E.E. Corporation
HIOKI provides electrical measuring solutions in various fields including vehicles, electronic components, environment & new energy, and infrastructure. Electrical measuring instruments, called industrial mother tools, are necessary and essential in all situations, such as research and development, production lines, and maintenance services. HIOKI promotes the safe and effective use of energy by customers and contributes to the security and development of society with solid technology and unique innovation cultivated through its 85 years of single-minded focus on electrical measurement.
HIOKI provides timely solutions to customers around the world through speedy collaboration of the headquarters in Japan, where development, production, and management functions are concentrated, its domestic sales branches, and its eight sales subsidiaries spread throughout Asia, America, and Europe. For details, please go to www.hioki.com.

30 Nov 2020 : Hioki Upgrades Digital Phase Detector PD3259 to PD3259-50

Hioki Upgrades Digital Phase Detector PD3259 to PD3259-50

Bluetooth® wireless communications support reduces workload and work times.

Hioki is pleased to announce the upgrade of  Digital Phase Detector PD3259 to PD3259-50, which supports Bluetooth® wireless communications with smartphones and tablets via the optional Wireless Adapter Z3210.

This capability makes it possible to use GENNECT Cross, a free application from Hioki, to review, manage, and create reports with measured values and to enter measurement data directly into users’ Excel® sheets*.

Like the previous product (the Digital Phase Detector PD3259), the PD3259-50 integrates a phase detector with a voltmeter, allowing it to simultaneously measure both phase and voltage using Hioki’s proprietary no-metal-contact voltage sensor.
The new instrument will help reduce workloads and work times since it not only makes safe, fast measurements, but also supports Bluetooth® wireless communications. That capability allows the entire series of steps from measurement to report creation to be carried out in the field and eliminates the risk of transfer errors.
*Hioki plans to add functionality for direct entry of values into Excel sheets to the Z3210 in 2021.

■ Development Background
In the past, technicians had to record data measured in the field on paper and create reports later. This workflow increased the likelihood that mistakes would be made when recording values on paper or entering them into a computer.
Additionally, the need to transfer values to a computer and to return to the office in order to create reports placed a significant burden on workers.
It is against this backdrop that Hioki is expanding its line of field measuring instruments that support Bluetooth® wireless communications in order to streamline measurement and testing work while accommodating new workstyles. As part of that effort, the company added support for Bluetooth® wireless communications to its phase detector with built-in voltmeter, an instrument that plays an essential role in electrical equipment installation and completion inspections.

■ Key Features

1. Bluetooth® wireless communications support for reduced workload and work times

When connected to the optional Wireless Adapter Z3210, the PD3259-50 can be paired wirelessly with a tablet or smartphone using Bluetooth®. The ability to send measurement data to such mobile devices eliminates mistakes when writing down values as well as the time and trouble of transferring data to a computer.
Additionally, measurement data can be (1) transferred to GENNECT Cross, a free application from Hioki, or (2) directly entered into an Excel® sheet.

(1) Transferring data to GENNECT Cross

GENNECT Cross can be used to review, manage, and create reports with measurement results. Other functionality allows users to manage data smoothly in the field, for example by placing measurement results on, or adding handwritten memos to, photographs of measurement sites or construction drawings that have been imported into the mobile device.

(2) Directly entering values into an Excel® sheet (coming to the Z3210 in 2021)

Measured values can be directly entered into an Excel® sheet. When a user opens an Excel® file and presses the HOLD button on the instrument while a cell is selected in the file, the measured value will be entered into the selected cell. This functionality will be useful for customers using a dedicated format to report results.

2. Easy judgment using vector diagram and unbalance factor displays (coming in 2021)

Until now, unbalance factors had to be calculated separately even if voltage was measured during maintenance of motors and pumps since phase shift and unbalance factor cannot be determined from measured values. With GENNECT Cross, users need only enter measured values to display a vector diagram and unbalance factor figures.

The ability to read unbalance factors directly makes it easy to compare readings with management standards so that motor and pump failures can be prevented.

*This is a reference image of the planned completion.

3.Fast, safe phase detection and voltage measurement with no-metal-contact voltage sensors

The PD3259-50 can both detect phases and measure voltages. The instrument features Hioki’s proprietary no-metal-contact voltage sensor. These sensors make it possible to detect phase and measure voltage simply by clipping the voltage sensors on the outside of each wire’s insulation, eliminating risk of electric shock and short-circuits.
Whereas the conventional approach required workers to confirm phase connections with a phase detector and then make three voltage measurements with a digital voltmeter, the PD3259-50 can perform all of these operations with a single measurement.

■ Principal Applications/ Customers
 •Electrical equipment installation, completion inspections, and periodic inspections
electricians, electrical maintenance engineers, electrical safety associations, power companies

■ Definition of Phase Detector

A phase detector is an instrument used to determine whether three-phase electrical wiring has been connected in the proper order.
Three-phase electrical wiring uses three or more wires to supply AC voltages characterized by three different phases. Operating three-phase equipment with the phases connected improperly can result in an accident or equipment damage.

Conventional phase detectors only detect whether the phases are connected properly, making it necessary to use another instrument such as a digital multimeter to determine the voltage values between each pair of lines.

*Company names and product names appearing in this release are trademarks or registered trademarks of various companies.

Download The Digital Phase Detector PD3259-50 Catalogue here

Download the Wireless Adapter Z3210 Catalogue here


Hioki Phase Detector Series At A Glance:

27 Nov 2020 : Hioki Launches AC Leakage Clamp Meter CM4002, CM4003

Hioki Launches AC Leakage Clamp Meter CM4002, CM4003

New instruments help resolve current leakage problems quickly with efficient investigation and high-precision measurement capabilities


Hioki is pleased to announce the launch of the AC Leakage Clamp Meter CM4002 and CM4003, which streamline current leakage investigations and deliver high-precision, high-reliability leakage current measurement capability.

The new instruments, which update the Clamp on Leak HiTester 3283, can measure parameters ranging from AC leakage current to load current.

In addition to a newly designed sensor that allows accurate detection of minuscule currents, the instruments support the optional Wireless Adapter Z3210, which can be connected to enable Bluetooth® wireless communications with smartphones and tablets. The CM4002 and CM4003 significantly reduce the time required to resolve current leakage issues.

■ Development Background
The process of maintaining electrical equipment in buildings and plants includes periodic insulation management. Since current leaks can lead to equipment malfunctions and electric shock, it is essential to locate them quickly. Additionally, in today’s world where electric power is critical to our everyday lives, electricity users demand maintenance methods that do not necessitate power interruptions.

Technicians use leakage clamp meters to measure current quickly and easily simply by clamping them around wires, eliminating the need to shut off the power. The Clamp on Leak HiTester 3283, which was launched in 1997, long served as Hioki’s fl agship instrument for measuring leakage current, earning it broad adoption among users responsible for production plant and building management and maintenance inspections over many years.

However, measurement was not a simple process, with operators typically required to copy down readings by hand on paper in the fi eld, which forced them to spend time later checking the results against equipment sites, and use other instruments such as recorders when they needed to investigate current leakage (intermittent leakage) issues to determine when they were occurring. Hioki developed the CM4002 and CM4003 to provide capability for investigating current leakage issues through efficient, high-precision measurement.


■ Key Features

1. Streamlining investigations of current leakage with the Z3210 and GENNECT Cross
When connected to the optional Wireless Adapter Z3210, the CM4002 and CM4003 can be paired wirelessly with a tablet or smartphone using Bluetooth®. GENNECT Cross, a free application software from Hioki, can then be used to place measurement results on site photographs and construction drawings that have been imported into the handset so that leakage locations can be quickly identified.

The application software also provides event recording functionality, a convenient tool for investigating leakage events whose timing is unknown. To utilize the function, users simply place the instrument in the field and configure event settings with the leakage current value and other conditions they wish to detect. Events are recorded in the instrument’s built-in memory as they occur, allowing the user to recover the data later and check for leakage events.

Other functionality such as the ability to generate PDF reports from recorded data in the field further boosts work efficiency.


2. High-precision, high-reliability leakage current measurement using a newly designed sensor
To measure minuscule leakage currents, an instrument must be engineered to resist the effects of external magnetic fields. The CM4002 and CM4003’s newly designed sensor uses high-permeability magnetic materials that resist the effects of external magnetic fields for its internal core and shielding. By blocking magnetic fields from the surrounding environment, these materials reduce the effects of such fields by 50%* compared to the previous model.

A new international standard governing leak clamps, IEC 61557-13, requires that the instruments be capable of measuring extremely small leakage currents at a higher level of precision than in the past. The CM4002 and CM4003 comply with the standard’s performance criteria to deliver highprecision, high-reliability measurement.
*Typical value when measuring a 20 mA leakage current in an external magnetic field of 400 A/m.

3.Ability to measure everything from leakage current to load current
The range of values for which accuracy is guaranteed‒0.060 mA to 200.0 A‒has been expanded from the previous model (1.00 mA to 200.0 A) to include minuscule currents. As a result, the instruments can be used in a greater variety of settings.

Thanks to a clamp diameter of 40 mm, the instruments can be easily clamped around thick cables.


4. Convenient functionality specific to the CM4003
Output function (waveform/RMS): The CM4003 can record waveforms and fl uctuations when used with a recorder.
External power supply function: The CM4003 can operate continuously for an extended period of time when used with the optional AC Adapter Z1013.




• Leakage current measurement: Insulation management and leakage checks
• Load current measurement: Electrical equipment inspections

*Company and product names used in this release are the trademarks or registered trademarks of their respective owners.

Hioki AC Leakage Current Clamp Meters At A Glance!

Download The AC Leakage Current Clamp Meter CM4002 and CM4003 Catalogue here

Download the Wireless Adapter Z3210 Catalogue here


26 Nov 2020 : Hioki Memory HiCorder MR8880 For Troubleshooting RCCB Failure In TL Inverter Solar PV System Due to DC Backflow

Data Acquisition

Hioki Memory HiCorder MR8880 For Troubleshooting RCCB Failure In TL Inverter Solar PV System Due to DC Backflow

What is RCCB? 

Residual Current Circuit Breaker (RCCB) is a device containing a mechanical switch to disconnect a circuit when it detects a current difference between the live and the neutral wire [1]. Under normal condition, the current in the live wire and the returning current from the neutral wire is the same [2]. The current difference, called Residual Current, is often caused by leakage current (mostly due to old or damaged insulation of equipment) flowing to the ground through a conductive path such as a human body. The Residual Current is used to disconnect the circuit in the RCCB according to their residual current rating design. Figure 1.0 shows the components of a RCCB while Figure 2.0 shows the pole types, residual current trip sensitivity rating, and type of RCCB available in the market.

Figure 1.0 Components of a RCCB
Figure 2.0 RCCB pole type, residual current trip sensitivity rating and type

Leakage current can be dangerous and even fatal to users if it exceeds certain threshold, as can be seen from Figure 3.0 below. Exposure to a leakage current of 30mA exceeding a mere 40miliseconds can kill a person. Therefore, RCCB plays a crucial role in user protection; any failure in the functionality of RCCB will have a devastating effect.

Figure 3.0 Leakage current effect on human

TL Inverter Solar PV System and DC Backflow

Solar Photovoltaic (PV) installation is becoming increasingly popular for domestic usage. Most home Solar PV system comes without a transformer (Transformer-less (TL) Inverter Solar PV system) for cost-effectiveness purpose. In this system, the parasitic capacitance between the PV system and earth forms a loop leading to a voltage which produces a current [3] (Figure 4.0). A parasitic capacitance is a phenomenon of unwanted capacitance when two nearby conductive elements are at or possess different charge levels. Due to the low impedance of this system, the common mode voltage will form a large common mode current (leakage current) on the parasitic capacitance.

Figure 4.0 Leakage current path for TL inverter Solar PV system

However, in a Solar PV system with a transformer, the high parasitic capacitance between the transformer windings loop can suppress the leakage current loop between the solar PV system and earth to a certain extent.

TL Inverter Solar PV System DC Backflow impact on RCCB

In a situation without any leakage current, the magnetic field of the RCCB core between the live wire and the neutral wire are balanced and cancels out. When leakage current occurs (ΙLive > ΙNeutral), the magnetic field changes and generates a current in the relay windings connected to the same iron core to disconnect the circuit if it hits the designated RCCB current rating.

When a certain amount of DC backflow occurs in the AC line supply, the total current flowing in the AC line live wire will be higher in one direction of the AC waveform (Figure 5.0). The higher current in one direction of the AC line causes the RCCB’s iron core magnetic field to magnetize in one direction more than the other [4]. The magnetization results in a higher tripping current required for the relay switch to mechanically disconnect the circuit. In short, the RCCB’s required tripping current is NOT functioning according to its designated rating anymore. This situation is very hazardous, as it means there’s no leakage current tripping protection for the users. Therefore, it is crucial to monitor DC backflow in the AC line to ensure no compromise on the safety of users. 

Figure 5.0 Effect of DC flow on AC magnitude** in live wire

Hioki MR8880-20 for DC backflow measurement  in TL Inverter Solar PV System

As illustrated above, DC backflow at certain level can cause RCCB functionality failure which could be lethal. Therefore, there's a need to monitor and ensure this parameter is at a safe level at all times. Hioki’s Memory Recorder MR8880-20 offer the following features that are useful to check on the DC backflow level.

• Four analog channels to measure up to 3-phase 4-pole RCCB

• Eight logic channels to monitor the trip sequence

• Measure individual phase’s DC current presence by using the four analog channels

The following accessories and attachments paired with MR8880-20 are used for measuring various AC and DC parameters:

1) Display Unit CM7290 with AC/DC Auto-zero Current Sensor CT7731
The AC, AC RMS and DC Current waveforms for RCCB can be measured

2) L9197 Alligator Test Leads with Magnetic Adapter  9804

a) AC and DC Voltage measurement
 The AC, AC RMS and DC voltage waveforms can be measured

b) Power disruption event trigger
The AC, AC RMS and DC voltage waveforms can be measured

3) Logic Probe MR9321-01
The trip time for the three-phase RCCB can be determined and compared to the requirement.

In conclusion, the reliance on RCCB alone for protection from residual current is insufficient for Solar PV System without a transformer. The DC backflow is a common and well-known phenomenon in this type of system. Without proper monitoring to ensure it is below the hazardous level, it can result in injury and worse, the loss of human life.

For more information on Hioki Memory HiCorder MR8880, please click the link here:  Hioki Memory HiCorder MR8880

Download Product Catalog


1. https://www.electgo.com/rccb-2/

2. http://engineering.electrical-equipment.org/electrical-distribution/residual-current-circuit-breaker-rccb.html

3. https://www.inverter.com/leakage-current-control-in-solar-inverter

4. https://www.youtube.com/watch?v=9qX89cPGgp4&feature=youtu.be

**Sine wave sample generated using sine wave generator on https://www.desmos.com/calculator/w9jrdpvsmk




27 Oct 2020 : Hioki “Battery” Happening Week!


Hioki "Battery" Happening Week!
Hear from Industry Experts like Durapower, VDE Renewables and Ion Mobility!

Together with Singapore Battery Consortium (SBC), HIOKI Singapore will be hosting a webinar exploring opportunities and challenges in different sectors of lithium-ion technology on 29th Oct (Thurs) from 3-5 pm SGT. The webinar features insights from industry experts in the consortium: Hioki (measurement and characterization), Durapower (production perspective), VDE Renewables (safety and testing), and Ion Mobility (e-bikes applications). Find more details about the program below, and click the link to register for the webinar!

SBC-Hioki Webinar: "Li-Ion Batteries: Production, Measurement, Safety And Applications"

Date: 29 October 2020 , Thursday

Time: 3pm - 5pm 

Time (SGT)


Title of Presentation

3:00pm - 3.05pm

Dr. Chiam Sing Yang 

Opening Remarks from Singapore Battery Consortium Director

3:05pm - 3.10pm 

Mr. Seiichi Miyazawa

Opening Remarks from Hioki Singapore Managing Director 

3.10pm - 3.30pm 

Dr. Shen Nan , Durapower

Lives Empowered, Future Transformed - A Look Into Durapower's Lithium-Ion Technology

3.30pm - 4.00pm

Dr. Takumi Mori,  
Hioki E.E Corporation

Electrical Measurement, Inspection and Characterization of LIBs

Short Break Of 5 Minutes

4.05pm - 4.25pm

Mr. Andreas Hauser , 
VDE Testing and Certification Institute

Lithium Ion Battery Safety (Safety Standards & Testing)

4.25pm - 4.45pm

Mr. James Chan, CEO,
Ion Mobility 

Powertrain for Electric Motorbikes: Opportunities & Challenges in Singapore and South East Asia

4.45pm - 5.00pm

Singapore Battery Consortium Representative

Question and Answer

What could you do if you can connect your electrical test tool to a smartphone or tablet? You can assign measured values to pictures taken on site to create intuitive reports in a flash! Join us in Hioki monthly Facebook LIVE session, this coming Friday, 30 October 2020, 3.30pm (SGT)! Hioki product marketing manager, Mr. Eugene Wee will be telling you more about the "Maintenance Testing of Lead Acid Batteries Using Hioki Best Seller , Battery Tester BT3554! Learn how to connect BT3554 to your mobile devices and create reports instantly! Stay till the end for the Question and Answer session too. Simply just log on to Hioki Singapore Facebook Page , www.facebook.com/HiokiSingapore,  5 minutes before the session, and you will receive a notification when we go "LIVE" ! See you and stay safe!

21 Oct 2020 : HIOKI Power Quality Analyzer PQ3198 For Data Center Redundancy Static Transfer Switch Testing

Green Building Energy Management

HIOKI Power Quality Analyzer PQ3198 For Data Center Redundancy Static Transfer Switch Testing

What is Data Center Redundancy ? 

A data center is a physical facility in an organization containing a network of computing and storage resources to deliver uninterrupted critical applications and data. The key components include routers, switches, firewalls, storage systems, servers, and application-delivery applications [1].Due to the critical role of a Data Center, the system is designed beyond its minimum capacity (hence the term ‘Data Center Redundancy’) to ensure continuity of operation even if part of the system fails [2].Figure 1.0 on the next page illustrates four redundant designs for a UPS system providing 200 kVA power to a data center and the various failure modes. The 2N design is a fully redundant architecture with two independent UPS that can support critical IT applications without interruption even if one of them fails.

Figure 1.0 Data Center UPS System Redundancy Designs and Failure Modes

Static Transfer Switch Testing and Its Importance

A data center requires an uninterrupted power supply to ensure continuous critical application and data support. A transfer switch functions to divert the power supply source from utility to emergency power during a power disruption. There are two types of transfer switch – Static Transfer Switch (STS) and Automatic Transfer Switch (ATS). The STS is preferred over the ATS in Data Center Redundancy design due to the following advantages (Figure 2.0).

Figure 2.0 Static Transfer Switch (STS) Advantages Over Automatic Transfer Switch (ATS)

The fast power source switching of STS during power disruption could result in voltage dip or transient voltage due to the sudden changes in the voltage supply if the STS is not operating according to its designation. Both events happen for a brief duration but could damage the data center machines, depending on their severity, duration, magnitude, and ability of the equipment to withstand the sudden voltage reduction or increase. Therefore STS testing is critical as a form of maintenance, particularly in a fully redundant data center.

Hioki Power Quality Analyzer PQ3198 for Static Transfer Switch Testing

Figure 3.0 below shows the set up for testing of STS in a 2N design of Redundant Data Center. The Hioki Power Quality Analyzer PQ3198 measures the following points concurrently:

Point A: If there’s a problem during switching from STS A to STS B or vice versa, a Voltage Dip or Transient Voltage will be detected via the PQ3198

Point B: If the power is lost or restored before STS A, this measurement point can detect it through a voltage phase measurement

Point C: If the power is lost or restored before STS B, this measurement point can detect it through a current phase measurement 

Figure 3.0 Static Transfer Switch (STS) testing points in a redundant data center design

The three measurement points enable the correlation of the STS switching to the voltage dip or transient voltage events. Figure 4.0 and Figure 5.0 shows screenshots of voltage dip and transient voltage captured during testing of STS in a redundant Data Center using PQ3198.

Figure 4.0 Voltage Dip Detection
Figure 5.0 Transient Voltage Detection
Figure 6.0 Dip Analysis with ITIC curve Using Hioki’s PQ ONE Software

Hioki’s PQ ONE software provides value-added analysis of the Voltage Dip with the ITIC curve analysis. The ITIC curve is useful in analyzing the incoming power quality [4] – in this case, the incoming voltage during power switching. The STS contains a rectifier to convert AC (from the UPS) to DC for storage in the bus capacitor before conversion to the required voltage. However, during incidents of voltage dips or transient voltage, the DC bus voltage could go very low or very high; this could affect the operation of the load. Figure 6.0 shows the ITIC curve analysis using Hioki’s PQ ONE software with the voltage dips plotted for each phase independently. 

PQ3198 has a built-in HTTP Remote server function that allows users to configure and monitor the instrument from a browser. Remote data retrieval is also a breeze with the built-in FTP server function. 

The remote function is only available through a router and local data sim card connected to the PQ3198.

Alternative Hioki Products For STS Testing

Hioki Memory HiCorders are another alternative to Power Quality Analyzer PQ3198 for a similar application. Besides the same ability to measure voltage dip and transient voltage, it has several other advantages:

• Multi channels (up to 32 analog channels)

• High vertical resolution (16 Bit)

• Long recording time 

• Multi-modular 

• Isolated channels

Below are the Hioki Memory HiCorder models suitable for the same application.

Memory HiCorder MR8847A

Memory HiCorder MR8827

Memory HiCorder MR6000

A fully redundant UPS system for Data Center will not be able to operate to its intended function unless the Static Transfer Switches (STS) are functioning according to its designation during a power disruption. Hence, the testing of STS is critical to ensure the uninterrupted service of the data center equipment.

For more information on Hioki Power Quality Analyzer PQ3198, please click the link here:  Hioki Power Quality Analyzer PQ3198 

Download Product Catalog


1. https://www.cisco.com/c/en/us/solutions/data-center-virtualization/what-is a-data-center.html

2. https://data-center-design.tumblr.com/post/116621905091/data-center-consideration-redundancy

3. https://www.livetolearn.in/site/forum/hardware-troubleshooting/difference-between-online-ups-and-offline-up #:~:text=Online%20UPS%20supply%20power%20to,is%20known%20as%20Online%20UPS

4. http://voltage-disturbance.com/voltage-quality/itic-curve/




1 Oct 2020 : Hioki E.E Corporation Memory HiLogger LR8450-01 Wins Good Design Award 2020

Data Logger

Hioki E.E Corporation Memory HiLogger LR8450-01 Wins Good Design Award 2020

Singapore, 1 October 2020

Hioki E.E Corporation Memory HiLogger LR8450-01 was presented with the prestigious Good Design Award on 1st October 2020, Thursday, in the "Equipment and facilities for production and manufacturing" category. The Japan Institute of Design Promotion started accepting entries for the Good Design Award 2020 in April. The Hioki Memory HiLogger LR8450-01 won the hotly contested prize, together with 1,395 award-winning works, following the screening of 4,769 entries.

The Good Design Award has been a tradition within Japan and has been comprehensively evaluating product designs and recommending them to consumers for more than 60 years! Since receiving the company's first Good Design Award in 1985, Hioki has won the accolade 73 times (including two Long-life Design Awards). Hioki Memory HiLogger LR8450-01 will be the 74th Good Design Award receive by the company.  Please find the list of Good Design Awards from 2001 - 2020 here : Hioki Good Design Awards 

In a time of turmoil and change, I see design as something that provides us with tools for creating a richer world where we can all live with hope and humanity. We hope that the latest award-winning designs show the potential of design to many.

President, Japan Institute of Design Promotion
Atsushi Oi

This year, the theme for the Good Design Award is “sympathy for each other.” ... The winning objects of the Good Design Award are not only “good” individually, but at the same time also form the totality of “good” that we now unanimously consider desirable. The Good Design Best 100 is positioned as the essence of the award to clarify and convey the message transmitted by the “totality of good.” We hope that communication among all the Good Design Award winning objects and their awareness of the mutually beneficial connection between them will create a driving force to open up the future.

Chair of the GOOD DESIGN AWARD 2020
Takashi Ashitomi

Last year,  Hioki E.E Corporation had also clinched Good Design Award for AC/DC Current Sensor CT6877 , AC Clamp Meter CM4141, AC Clamp Meter CM4142, AC/DC Clamp Meter CM4375 , AC/DC Clamp Meter CM4376 .

Read more about Memory HiLogger LR8450-01 Good Design Award here:

About Good Design Award:

Messages from organising committee:



Judge’s comments

The product allows various sensor units, which can be expanded in a flexible manner as needed, to be connected directly to facilitate high-speed measurement or wirelessly for simpler wiring. With features including a design that lets units be connected and disconnected directly and without twisting to avoid wire breaks and the inclusion of an A/D converter in each unit to maintain speed when multiple units are connected, the instrument excels as a system for high-speed simultaneous measurement of a wide range of phenomena in numerous locations.

About Memory HiLogger LR8450/LR8450-01


The Memory HiLogger LR8450 is a portable logger capable of measuring multiple channels of strain*1 and voltage data. The LR8450 (standard model) and LR8450-01 (wireless LAN model) both boast a maximum sampling speed of 1 ms (1/1000 s), the fastest of any Hioki logger. Customers can choose from a selection of measurement units, including the Voltage/Temp Unit and the Strain Unit, according to their application. A single LR8450-01 can host up to 11 plug-in and wireless units to measure as many as 330 channels*2.


Customers in the automotive and environment/alternative energy sectors, both of which Hioki has identified as priority markets, have embraced the legacy Memory HiLogger LR8400 series (max. 10 ms sampling), which can measure a large number of channels despite its compact size, and the popular Wireless Logging Station LR8410 (max. 100 ms sampling), which separates data measurement (by units) and collection (by the instrument).

Common themes appearing in feedback from LR8400 and LR8410 users included a desire to measure large numbers of channels more quickly in development of products such as electric vehicles (EVs), to measure strain on vehicle chassis and batteries along with temperature, and to reduce wiring man-hours and measurement issues by capturing strain data wirelessly.

1. Sample a Large Number of Wired and Wireless Channels at Up to 1 ms
Customers need measurement solutions that are capable of accommodating abrupt changes in load in the development of electric vehicles such as EVs, hybrids (HVs), and plug-in hybrids (PHVs).  By using the High Speed Voltage Unit U8553, a 5-channel plug-in unit that can measure voltage at a sampling rate of 1 ms, customers can capture such rapid changes.

The LR8450 series is ideal for capturing output data from sensors that measure low-frequency (from 10 to several dozens of hertz) data such as resin pressure or vibration, which are difficult to measure at conventional sampling speeds. The Wireless High Speed Voltage Unit LR8533, a 5-channel wireless unit, can measure voltage at a sampling rate of 1 ms. This sampling rate is 100 times faster than the LR8410 Wireless Logging Station.

2. A Single Solution for Dynamic Strain Measurement
The Strain Unit U8554 (a plug-in unit) and the Wireless Strain Unit LR8534 (a wireless unit) are also capable of sampling data at up to 1 ms, making them useful in testing strain on vehicle chassis and brakes.

Strain gauges*3 are extremely thin, and their wires are prone to break when positioning them far from the host instrument. Wireless measurement allows wire lengths to be minimized so that wiring man-hours can be reduced and measurement issues such as wire breaks avoided.  Moreover, conventional products require an external component known as a bridge box in order to measure strain. The LR8450 has a built-in bridge box despite its compact size, allowing strain gauges to be connected directly to its measurement units. Strain gauge-type converters can also be connected to measure quantities such as pressure and acceleration.


3. Add Wired or Wireless Channels as You Need Them

Both the LR8450 (standard model) and the LR8450-01 (wireless LAN model) can accept a mix of up to four plug-in units. Since you can combine units with different sampling speeds, you can simultaneously observe fast voltage fluctuations and slow temperature changes.


The LR8450-01 can also connect to seven wireless units. Combined with its four slots for plug-in units, that means you can pair up to 11 units, allowing one LR8450-01 to measure as many as 330 channels.   You can choose whether to use wireless connectivity for measurements as conditions dictate.




• Testing of automobiles, farm and construction machinery, and electric devices
• Embedding in preventive maintenance systems for production equipment and evaluation equipment at manufacturing plants


*1 Strain: The ratio of the change in the form of elongation and contraction that occurs in an object when a force is applied. The minuscule change in electrical resistance caused by strain is detected and measured using a strain gauge.
*2 If four Voltage/Temp Unit U8552 (30 channels, plug-in) units and seven Wireless Voltage/Temp Unit LR8532 (30 channels, wireless) units are connected, the LR8450-01 can measure 330 channels of voltage and temperature data at a maximum sampling rate of 20 ms.
*3 Strain gauge: A sensor for measuring strain.

Download Catalogues: 

11 Sep 2020 : Measuring RFIDs Operating Frequencies Using Hioki Impedance Analyzer IM758x series


Measuring RFIDs Operating Frequencies Using Hioki Impedance Analyzer IM758x Series

What is RFID?

RFID refers to Radio-frequency identification and uses radio frequency electromagnetic fields to transfer digital information. Because of it's non-contact method of wireless information collection, the technology has been recently in the spotlight during the pandemic, especially in the healthcare industry and supply chain.

There is a huge potential in RFID technology lately as it helps to reduce physical contact and can be used in the fight of against COVID-19. 

Some hospitals are even using RFID technology to track how often healthcare workers are washing their hands.

Other industries/applications that use RFID technology include:

- Supply chain management


- ID cards

-Wireless Payments

-Food Industry

-Healthcare Industry

-Automotive Industry ...and more.

Operating Frequencies of RFIDs: 

The operating frequencies of RFIDs, which are also known as IC tags or contactless IC cards, are defined by standards. When performing L measurement of a board used by a contactless IC card, the measurement must be made near the operating frequency of 13.56 MHz.

Setting example of measurement conditions

Measurement Mode



Z-θ frequency characteristics analysis(L-Q、R evaluation available)

Sweep parameter


Sweep frequency

Sweep measurement close to the operating frequency (See the table below)

Signal level

V mode 1V (350x, IM35xx series) or 1dBm (IM758x series)

*The above settings apply to an example measurement. Since optimal conditions vary with the measurement target, specific settings should be determined by the instrument operator.

RFID standards



Effective distance


ID cards


Up to 10cm

(Proximity applications)


Automatic recognition


Up to 70cm

(Vicinity applications)




Structure of RFID tag

RFIDs generally consist of an antenna and IC. Signal transmission is accomplished by a resonant circuit formed by the antenna inductor (Ls) and the IC chip’s built-in input capacitance (Cp).


Circuit model

Frequency characteristics of defective and non-defective components

As shown in the following figures, the Z-θ frequency characteristics of defective and non-defective components differ. The non-defective component exhibits a resonance point near the operating frequency.

 Frequency Characteristics of Impedance

Frequency Characteristics of Phase

Products Used

Production line and R&D applications


Measurement frequency


100k to 1.3GHz * 

Mainly for high-frequency RFID

4Hz to 5MHz

Mainly for low-frequency to medium frequency RFID

*For more information, please see the product catalog .

Pass/Fail Judgments Using Analyzer Mode

Either of two methods can be used to generate pass/fail judgments when using analyzer mode: peak judgment and area judgment.

Judgement method: Whether the resonance points fall inside a judgement area.

Judgement method: Whether all measured values fall inside a judgement area.

Peak Judgement

Area judgement

Judgement areas can be set as follows.

  • A known-good element’s measured value can be used as the reference (±10% of the reference element’s measured value, etc.).

  • A user-specified value can be entered (1 k±10%, etc.).

Ascertaining Electrical Constants By Means Of Equivalent Circuit Analysis

The instrument’s equivalent circuit analysis function can be used to calculate the constants in a three-terminal circuit model such as an RFID antenna.

*Model A should be used for coils with a large core loss (R) in order to facilitate more accurate analysis.

Photovoltaic Testing
Current Probe