[Product Introduction] Why Klaric products are chosen as voltage and current measuring instruments for electric vehicles | TEGAKARI, an information dissemination media for research and development

Overseas product procurement and consultation service Unipos is a German-based measuring instrument manufacturer based in Stuttgart.Klaric voltage and current measuring instrument” has started handling.

Klaric is a manufacturer specializing in the development of measurement and test technology for mobile and fixed applications in vehicles and test benches. In response to the expansion of the EV market, which is shortening development times and increasing the number of tests required due to the increasing complexity of electric systems as the number of vehicle models developed increases, Klaric offers a variety of products as solutions to improve the quality and efficiency of tests.

In particular, the company's high-voltage measurement module has a galvanic isolation function of 1,500V for all measurement channels, and is compatible with the higher voltage EV battery standards (changing from 400V to 800V) that are resulting from improved energy efficiency in EVs.

Compared to ordinary 500V withstand voltage measuring instruments, this instrument has gained support for ensuring safety when accessing the high-voltage side of electrical components and for ease of handling, and has been introduced by several major European automobile manufacturers.

On this page, we would like to delve deeper into the reasons why people choose Klaric products. We hope that this article will be useful for those who are considering introducing "European standard measuring instruments" made by a German manufacturer.

table of contents

Benefits of using Klaric products: Numerous features that can reduce exam preparation time by more than 50%
Examples of product combinations for each measurement
Klaric product lineup
Please feel free to contact us for inquiries and purchases of Klaric products.

Benefits of using Klaric products: Numerous features that can reduce exam preparation time by more than 50%

"Why choose Klaric products as voltage and current measuring devices for electric vehicles?. "

The main reason is that Klaric products have many functions and features that enable you to shorten the preparation time for vehicle testing by "50% or more." Below, we will introduce each of these functions.

Point 1: Wide range measurement

Covers measurements from low range standby state to high range operating state

Klaric's measurement modules have an internal gain amplifier, which allows for a wide input voltage range, and the gain can be set from 1x to 100x, allowing for a rangeability of 100x.

Point 2: Auto range

No need to set the range in advance, greatly reducing preparation time before testing

Klaric measurement modules come standard with an auto-range function that automatically switches the measurement range according to the signal level, eliminating the need to set the range before testing, significantly reducing the time required for test preparation.

The greatest advantage of the auto-range function is that it can measure current and voltage with the highest resolution for the measurement value.

When measuring a maximum current of 10A with a shunt resistor of 100mΩ, the measurement module has an accuracy of ±0.1% reading ±3bit. As shown in the table below, the smaller the measurement value, the more dramatically the measurement accuracy at the maximum range improves.

Measurement current I (A,mA)	Measurement range (automatic switching)	Measurement Error (mA)	Accuracy for current value (%)	Accuracy for measurement range 10A (%)
10A	10.5A	10.9613	0.110%	0.1096130%
2.1A	2.1A	2.2923	0.109%	0.0229226%
0.42A	0.42A	0.4585	0.109%	0.0045845%
0.27A	0.27A	0.2947	0.109%	0.0029472%
0.09A	0.09A	0.0982	0.109%	0.0009824%
10mA	90mA	0.0182	0.182%	0.0001824%
1mA	90mA	0.0092	0.924%	0.0000924%

Point 3: Dynamic sampling rate

The sampling rate can be changed automatically, greatly reducing the amount of data in standby mode.

Dynamic sampling rates come as standard in Klaric measurement modules.

A threshold is set for the measurement value, and the sampling rate is automatically adjusted when the measurement value exceeds the threshold. This makes it possible to significantly reduce the amount of data during component wait times.

Point 4: Automatic probe recognition function

Automatically obtains probe calibration information, greatly reducing preparation time before testing

Every Klaric probe center contains a chip that stores the sensor information and calibration values.

Klaric's measurement module reads the sensor data from the probe sensor, automatically identifies the sensor and automatically sets up the measurement.

This function reduces human errors such as incorrect device settings.

Point 5: Highly accurate sum

Highly accurate sum of measurement module and probe sensor

Accuracy specifications: ±0.1% reading ±3bit 23℃±5℃, ±1% reading ±3bit -40℃~+85℃ *

*The AD converter has 16 bits, of which 1 bit is a parity bit, so the measurement value has a resolution of 15 bits (2^(-15)).

Point 6: Automatic DBC/A2L file generation

Automatically generate DBC or A2L files and integrate them into the system

All Klaric measurement modules output data via CAN Bus and XCP-On-Ethernet outputs.

For CAN Bus, DBC files and A2L files for signal recognition are automatically generated and integrated into the CAN system.

This allows synchronous measurement of vehicle ECU signals using a commercially available CAN data logger, or it can be easily imported to a PC via a CAN-USB converter.

Using Klaric measuring instruments with the above features will reduce the time required for vehicle testing, thereby accelerating the research and development of electric vehicles.

Examples of product combinations for each measurement

Klaric offers a wide range of devices with the features described above. By combining these devices, the following solutions can be realized.

The following information is based on the APPLICATIONS page of the manufacturer's website.

https://klaric.de/en/applications/