Certificate of Compliance, Test report and Inspection certificate
Pt100 resistance thermometers are used in a wide variety of applications - from temperature monitoring in industrial production and mechanical engineering to demanding processes in the food industry, chemical industry or medical technology.Particularly in critical applications with high safety requirements, it is important that the Pt100 sensors not only measure precisely, but also that the material used and other properties meet the requirements agreed in the order.
Complete documentation and test certificates are essential to prove that Pt100 resistance thermometers work reliably and in accordance with standards.
The DIN EN 10204 standard regulates the issuing of certificates that confirm the properties and quality of materials and products.
Three types of these documents are often required for Pt100 resistance thermometers:
Certificate of Compliance, Test report and Inspection certificate.
These certificates are not only proof of compliance with standards, but also an essential tool for traceability and proof of the highest quality.
They are usually issued by the manufacturer and serve to ensure that the materials supplied comply with the technical specifications, standards or contractual requirements.
In the old standard (DIN 10204), the test certificates were primarily intended for metal processing. In the meantime, the test certificates (DIN EN 10204) are also used for other materials such as plastic.
Types of test certificates for Pt100 resistance thermometers
The DIN EN 10204 standard defines various types of test certificates.Certificate
of Compliance
2.1
of Compliance
2.1
Test
report
2.2
report
2.2
Inspection
certificate
3.1
certificate
3.1
Inspection
certificate
3.2
certificate
3.2
Description
Simple certificate with which the manufacturer
confirms that the product complies with the agreements in the order.
No indication of test results.
No indication of test results.
as 2.1,
but also contains results of non-specific tests.
but also contains results of non-specific tests.
The manufacturer confirms through its independent acceptance representative that the
characteristics and properties specified in the order are complied with by means of a specific
test on the product to be delivered.
Qualified test results on the specific product are specified.
Traceability (e.g. chemical composition of the material, etc.) must be guaranteed.
Qualified test results on the specific product are specified.
Traceability (e.g. chemical composition of the material, etc.) must be guaranteed.
as 3.1, but with additional acceptance by an agreed, independent inspection
body or the customer.
Tests
The tests do not have to be carried out on the delivered products themselves,
but are often carried out on products that have been manufactured according to the same
specifications and the same process.
This means that only random sample results with statistical evaluation are confirmed and not the results of the actual product supplied.
This means that only random sample results with statistical evaluation are confirmed and not the results of the actual product supplied.
The type and performance of the tests are specified by the customer in the
order and must be carried out on the products to be delivered.
A direct assignment of the test results to the products (series no., melt no., etc.) must be established.
A direct assignment of the test results to the products (series no., melt no., etc.) must be established.
Indication
of results
of results
No indication of test results; only OK.
The test results must be stated in the certificate.
Tester
A competent person authorized by the manufacturer.
This person may also belong to the body that produces the product.
The inspection is carried out or supervised by an authorized inspector.
This person must be independent of the location where the product was produced or where the characteristics to be tested were tested.
This person must be independent of the location where the product was produced or where the characteristics to be tested were tested.
Selection of
the tester
the tester
The manufacturer appoints a competent person in his company.
The legal responsibility lies with the manufacturer.
The legal responsibility lies with the manufacturer.
The authorized inspector is appointed in writing by the manufacturer.
Two authorized inspectors sign the protocol.
One is appointed by the manufacturer and one by the customer
One is appointed by the manufacturer and one by the customer
Note
The manufacturer confirms that the delivered products comply with
the agreements in the order.
No conformity can be derived from this certificate for the entire
product, but only for the tested and agreed characteristics!
Comparison of test certificates according to old and new standard
Old:
DIN 50049-02.92
and EN 10204-91
DIN 50049-02.92
and EN 10204-91
Certificate
of Compliance,
2.1
of Compliance,
2.1
Test
Report
2.2
Report
2.2
Factory
Certificate
2.3
Certificate
2.3
Inspection
certificate
3.1A
certificate
3.1A
Inspection
certificate
3.1B
certificate
3.1B
Inspection
certificate
3.1C
certificate
3.1C
Inspection
certificate
3.2A
certificate
3.2A
Inspection
certificate
3.2B
certificate
3.2B
New:
DIN EN 10204:2005-01
DIN EN 10204:2005-01
Certificate
of Compliance
2.1
of Compliance
2.1
Test
report
2.2
report
2.2
not applicable
Inspection
certificate
3.2
certificate
3.2
Inspection
certificate
3.1
certificate
3.1
Inspection
certificate
3.2
certificate
3.2
not applicable
not applicable
Comparison of test certificates according to old and new standard
Old:
DIN 50049-02.92
and EN 10204-91
DIN 50049-02.92
and EN 10204-91
Certificate
of Compliance
2.1
of Compliance
2.1
Test
report
2.2
report
2.2
Factory
Certificate
2.3
Certificate
2.3
New:
DIN EN 10204:2005-01
DIN EN 10204:2005-01
Certificate
of Compliance
2.1
of Compliance
2.1
Test
report
2.2
report
2.2
not applicable
Old:
DIN 50049-02.92
and EN 10204-91
DIN 50049-02.92
and EN 10204-91
Inspection
certificate
3.1A
certificate
3.1A
Inspection
certificate
3.1B
certificate
3.1B
Inspection
certificate
3.1C
certificate
3.1C
Inspection
certificate
3.2A
certificate
3.2A
Inspection
certificate
3.2B
certificate
3.2B
New:
DIN EN 10204:2005-01
DIN EN 10204:2005-01
Inspection
certificate
3.2
certificate
3.2
Inspection
certificate
3.1
certificate
3.1
Inspection
certificate
3.2
certificate
3.2
not applicable
not applicable
Contents of an inspection /test certificate
A test certificate can contain different information depending on the type and requirements.DIN EN 10168 can be used as a basis for describing the properties and test characteristics of metallic products.
The identification numbers defined therein serve to standardize communication between manufacturers, suppliers and customers and to ensure that the same information is available to all parties.
Certificates
General information
2.1
2.2
3.1
3.2
x
x
x
x
Certificate type according to EN 10204
x
x
x
x
Name and address of the manufacturer
x
x
x
x
Name and address of the customer
x
x
x
x
Order number/item number
Description of the product
x
x
Quantity
x
x
x
x
Product description (surface finish, if applicable)
x
x
Material designation
x
x
Identification of the product (e.g. by serial, melting or test number)
Mechanical/chemical tests (as agreed with the customer)
x
x
Chemical composition (analysis method, standard content)
x
x
Tensile strength (Rm)
x
x
Yield strength/Re (Rp0.2 or Rt0.5)
x
x
Elongation at break (A or A80)
x
x
Impact energy (ISO-V)
x
x
Hardness (HB, HV, HR)
x
x
Formability
x
x
Other mechanical properties
Other information (as agreed with the customer)
x
x
Heat treatment
x
x
Surface treatment
x
x
Other tests
x
x
Special requirements of the customer
x
x
Information on traceability
Confirmation
x
x
x
x
Declaration of conformity that the product complies with the order
x
x
x
x
Date of issue
x
x
x
x
Stamp/name of the authorized inspector
x
Stamp/name/address of the customer's acceptance representative
Test certificates from distributors
The old standards did not specify exactly who was allowed to issue test certificates.As dealers did not want to name their suppliers to the customer, test certificates were often rewritten and only the dealer's address was listed.
However, the new standards (from 1982) clearly state that only “manufacturing and processing plants” may issue test certificates.
The exception is the certificate of compliance 2.1, where the dealer can assume responsibility for the conformity of the product with the agreed specifications.
He can guarantee this by means of his own quality control or corresponding proof from the manufacturer.
It must be clear that the document was issued by the distributor and not by the original manufacturer.
A distributor may only issue a test report 2.2 if he has the necessary infrastructure to carry out the relevant tests, is authorized by the manufacturer to carry out the tests,
documents them and can provide a clear, verifiable basis for the information in the certificate.
Transcripts of certificates
As part of the freedom of contract between customer and supplier, it can be agreed in an order that only a transcripts of inspection certificates (2.2, 3.1, 3.2) is to be agreed without naming the manufacturer.It must be ensured that:
- The content of the transcripts is correct and corresponds to the original.
- There are no industry-specific requirements for naming the manufacturer (e.g. aviation, or required traceability).
- The dealer is responsible for the documentation and conformity.
- In this case, the dealer assumes responsibility for ensuring that the delivered products match the information in the transcripts of the certificates.