Certification/Certification Guidance

When welding pressurized equipment and pipes, relevant regulations (standards) require testing in accordance with the weld and hook method of pressure parts, weld method of non-pressure parts (ex. lags) with pressure parts, type of parent material, type of weld rod, preheat temperature, stress relieving method, type of shield gas, etc., and welding using a previously validated method.

Welding engineers, welding methods, and welding method inspection reports certified according to the relevant regulations are required when welding flanges with the wells of our flanged thermowells as well.

We believe that assuring the weld quality required by the relevant regulations (standards) is necessary in preventing any trouble occurring with welds and in enabling the stable operation of applicable equipment and plants. We, therefore, strive to maintain and improve the skills of engineers and of weld quality through the acquisition of compliant engineers and welding certifications.

We have obtained the certifications of Customs Union and Metrology Pattern Approval in Russian-speaking countries. We can issue the certificates for our products which have been qualified for its quality and safety. Our affiliate, YAMARI SINGAPORE PTE LTD. has also obtained the same certifications.

1. Certification of Customs Union

We have obtained the certification of Customs Union (TR CU 012/2011) for the safety equipment for use in hazardous environments. Replacing the GOST-R, this is the certification of Customs Union/EAC conforming to the technical regulations (TR) for the explosion-proof products of sheathed thermocouples and sheathed resistance thermometers not only in the Russian Federation but also the Eurasian Economic Union (EEU) including the Republic of Kazakhstan and the Republic of Belarus.

2. Certification of Metrology Pattern Approval

Approved by the Russian Federation Metrology Technical Standard, we have obtained the certification of Metrology Pattern Approval for sheathed thermocouples, protection tube-type thermocouples, sheathed resistance thermometers, and protection tube-type resistance thermometers.

Following the ATEX Explosion-Proof Directive, our multi-point temperature sensors currently also comply with Japanese explosion-proof(flameproof) standards.　Flameproof construction of electric devices means that the vessel can withstand and will not be damaged by internal explosions caused by explosive atmospheres that enter it, and the target explosive gas or vapor outside the vessel cannot ignite through any of the joints or structural openings. Such devices, therefore, can be used in dangerous places where explosions may occur.

Japan (Industrial Safety Technology Association)

Europe (ATEX)

Russia (TR CU)

USA (FM)

China (NEPSI)

South Korea (KOSHA)

In addition to a wide variety of explosion-proof temperature sensors that comply with Japanese (Technology Institution of Industrial Safety), European (ATEX/DEKRA) and Russian (TR CU) standards listed above, our products have been certified for Cl.I Div.1 Gr.A/B/C/D or IIC T6 explosion-proof by notified bodies in U.S. (FM), China (NEPSI) and Korea (KOSHA). We provide temperature sensors that can be used in all explosive gas and vapor atmospheres including hydrogen and acetylene.
Our temperature sensors also have been certified for dust-ignition proof intended for the use in explosive atmospheres caused by air/dust mixtures including metal, coal, crop, etc. in accordance with European (ATEX/DEKRA) and U.S. (FM) standards.

Approved by Nippon Kaiji Kyokai(class NK), American Bureau of Shipping(ABS) and Lloyd’s Register of Shipping (LR), we have obtained the Pattern Approval for temperature sensors, now therefore we can offer marine temperature sensors.

The vibration-proof performance is vitally important to marine temperature sensors. Yamari has developed a unique sensor-insertion structure into thermowell as well as resistance thermometers with an excellent durability, which fully satisfy the requirements of each Standard of Nippon Kaiji Kyokai(class NK) and American Bureau of Shipping(ABS). Moreover, Yamari has obtained the certifications for various other types of sensors necessary to machinery and cargo. Please contact our sales office for more information.

[Thermowell configuration]
Designed for natural frequency more than 120 Hz

[Sensors]
Super vibration-proof structure (1)
SUnique damping structure (2)(3) (Patent No.6094707)

Sensor with a unique damping structure

What is IEC61508, the standard for functional safety?
・A standard established to prevent serious accidents caused by production equipment and machinery.
・Assuming in advance the degree of danger that is assumed when operating production equipment and machinery, and using sensors, components, and control methods that correspond to the degree of danger, the probability of an accident occurring is kept as low as possible.
・Introduction is accelerating at leading global companies.

merit
・Yamari temperature sensor conforms to IEC61508 SIL3 level.
・Proof of compliance with international standards (IEC) by third-party certification.
・SIL3 level highly reliable temperature sensor improves equipment reliability and reduces maintenance costs.

Functional safety IEC61508 certification (thermocouple, RTD)

It is also posted on the website of Exida.

The JIS mark display system is used for various products.

The JIS mark display system is a third-party product certification system based on the Industrial Standardization Law.
By utilizing this certification system, manufacturers are able to display the JIS mark on their products.

The following points are examined by a certification body registered in the country, and the quality conforming to JIS is recognized.
・Quality control system of manufacturers
・Product testing (confirming that product quality conforms to JIS standards)

Currently, we can produce sheathed thermocouples with JIS mark (JIS certification). This is a proof that our excellent quality is recognized.

JCSS is a calibration laboratory registration system based on the Measurement Act with ISO/IEC17025 as the accreditation standard.

Our Standard Laboratory conducts “temperature calibration” as an international MRA certified company.
Calibration certificates with JCSS accreditation symbols issued by our company can be accepted among MRA member countries of ILAC and APAC.