FREQUENTLY ASKED QUESTIONS

Is Shipping Free?

Due to the frequent price changes made by shipping companies, we do not offer free shipping.
All shipments are sent on a “freight collect” basis — the shipping cost is paid by the buyer.

Do Thermocouples and Resistance Thermometers Come with a Warranty?

Thermocouples and resistance thermometers are not covered by a warranty.
This is not specific to our company — no manufacturer in the world provides a warranty for thermocouples or resistance thermometers.

Instead of a warranty, the key principle in this field is “correct selection and proper manufacturing.”
The manufacturer is responsible for producing the correct product based on the user’s technical specifications and process requirements.

Before installation, the user should inspect the sensor visually or with appropriate test equipment.
Additionally, users have the right to request certificates and production documents for the materials used in manufacturing.

Upon request, the manufacturer can provide documentation and certificates for components such as:

Protective sheath,

Element wire,

Resistance thermometer element,

Insulator and other materials.

The relationship between manufacturer and user is built on trust.
A reputable manufacturer provides necessary assurance against manufacturing defects.
However, due to the nature of these products, the concept of “warrantied sales” does not apply to thermocouples or resistance thermometers.

What Is the Service Life of Thermocouples and Resistance Thermometers?

The service life of thermocouples and resistance thermometers depends entirely on correct selection and process conditions.
Their lifespan can vary significantly from one process to another.

The crucial factor is choosing the right sensor.
Although these sensors may seem simple in structure, their selection requires careful consideration of many technical factors.

Even when the correct selection is made, factors such as process temperature, environment, or operating cycle can cause the same sensor to have different lifespans in different plants.
Past experience and adherence to technical literature are therefore extremely valuable.

Key factors affecting sensor lifespan include:

Average and maximum operating temperature,

Continuous or intermittent process operation,

Environmental variations,

Type and thickness of the protective sheath,

Material and diameter of the element wire,

Type of resistance element used,

Immersion length,

Gases or chemicals present in the environment.

Even minor changes in these parameters can shorten or extend the lifetime of thermocouples and resistance thermometers.

Accordingly:

The user must provide complete and accurate process information to the manufacturer.

The manufacturer must use its experience and technical knowledge to recommend the most suitable sensor.

Both parties should collaborate continuously to monitor performance and process conditions.

The most economical and long-lasting thermocouple or resistance thermometer can only be achieved through correct selection.
Therefore, it is not possible to define a fixed lifespan for these products.