News Release
April 11, 2022
Nissin Electric Co., Ltd.

Nissin Electric Starts Selling New Stand-alone Corrosion Detection Sensor as Part of theMultiple Environment Sensor Lineup— Achieving inexpensive long-term detection by using proprietary optical detection technology —Nissin Electric Co., Ltd. has started selling a corrosion detection sensor as a stand-alone product in March 2022 tovisualize the risk of failure caused by corrosive gas (hydrogen sulfide) in the installation environment of electricalequipment as part of its multiple environment sensor lineup.
This is a business activity that contributes to one of the six growth strategies in the Nissin Electric Group Medium-toLong-Term Business Plan VISION2025, “Adoption of DX to products and business.”
Recently, efforts have been made to use sensing data to optimize equipment maintenance and reduce the labor
required as a measure to cope with the shortage of personnel engaged in electrical safety in the future.
Nissin Electric has been upgrading its lineup of multiple environment sensors, which visualize the installation
environment of electrical equipment, such as substation equipment, in stages. The MES-42/43, multiple environment
sensor (corrosion/communication) designed to detect the risk of failure caused by corrosive gas, has been built into
Nissin Electric’s electrical equipment for waterworks since April 2021. Nissin Electric has now decided to sell this sensor
for wider use as sufficient findings about its effective judgment of the risk of corrosion have been accumulated based on
the field data.
This product uses the company’s proprietary optical detection technology (patent pending). A set comprising thesensor body and sensor head is relatively inexpensive (about 150,000 yen) and achieves long-term detection. For thissensor, the number of modes to determine and display the risk of corrosion has been increased from two to four basedon the field data. The accuracy has also been improved. Multiple environment sensors allow remote monitoring througha general-purpose gateway via wired or wireless connection. They are capable of integrated management andmonitoring of different types of sensing data by combining products in the lineup. The product to be released is designed
to enable linkage of corrosion data. This will increase the convenience of using sensing data in equipment maintenance.
In 2021, the MES-52/53 multiple environment sensor (general purpose) was added to the lineup. Its ability to measurehumidity and temperature has been improved compared to that of conventional products. Nissin Electric aims to achievea revenue of 100 million yen for FY2022 from multiple environment sensors, including these two products.
Nissin Electric remains committed to upgrading sensor functionality, contribute to increasing the efficiency ofequipment maintenance by using IoT, and further increasing safety and security for customers.

1. MES-42/43 multiple environment sensor (corrosion/communication)
This product comprises of the sensor body and the sensor head, which
consists of a light source, reflector, and photosensor. The reflector is madefrom silver, which has the property of being corroded and discolored byhydrogen sulfide contained in corrosive gas. The risk of corrosion isdetected by sensing changes in the reflectance of the light source causedby discoloration using a photosensor.
For electrical equipment installed in an environment where hydrogensulfide is likely to be generated, measures are implemented to reduce
concentration of hydrogen sulfide in order to prevent failure caused bycorrosion of printed wiring boards used for built-in components, such as
sequencers. The product makes it possible to diagnose the validity and continuity of measures and judge the timing toreplace life-limited parts (including filters), which are built into reduction units. This helps prevent deterioration and failurecaused by corrosion. The product also helps optimize the timing to replace life-limited parts.

URL https://nissin.jp/e/2. MES-52/53 multiple environment sensor (general purpose)
High-performance digital sensors are used as the temperature and humidity sensors.
The measurement range and accuracy have been improved compared to those of aconventional product (MES-12/13). The structure is designed to enable simple
replacement of the sensor substrate only, making it possible to replace the substrate
when the performance deteriorates.
For components built into electrical equipment, high and low temperatures cause
malfunction and reduce the service life. High humidity causes deterioration in insulationand leads to rust development. This product helps achieve secure operation of electricalequipment by accurately measuring the installation environment and allowing theimplementation of appropriate measures and maintenance based on data.

<Common functions of the series> Remote monitoring configuration (image)■ Overview of specifications
MES-42/43 (corrosion/communication)
MES-52/53 (general purpose)
Sensor bodySensor head

Outside Dimensions(excluding protrusions)

W50×H78×D100mm

W51×H30 ×D91mm

W50×H78×D100mm

Weight250g or below

200g or below

250g or below

Control Power Source

AC 85 to 264 V, 47 to 63Hz ／ DC80～143V

Measurement Item

Hydrogen sulfide concentration estimation/
Equipment failure risk (four-modedisplay)/temperature

Temperature/humidity/insulation
resistance/vibration

Data Logging(built-in memory)

Up to 40,000 datasets(equivalent to 4 years based on logging once/hour)

Up to 32,000 datasets(equivalent to 3.5 years [sameas on left])

Communication Protocol
Temperature Range inwhich performance isguaranteed

Wired type: RS-485/Wireless type: 920 MHz band multi-hop
0 to 50°C

The Nissin Electric Group has been stepping up its efforts to promote the SDGs through its business operations.
This accomplishment is related to the following goals among the 17 SDGs.
9.Industry, Innovation and Infrastructure