Revised CPA Catalogue for Measuring Instruments in 2026
April 12, 2026SAMR has updated the list of measuring instruments subject to pattern approval, adding new categories for smart meters. Check if your product now requires CPA certification.
CPA Metrology Type Approval China â Pattern Approval for Measuring Instruments
Ensure your water meters, gas meters, electricity meters, weighing scales, and other measuring instruments obtain CPA metrology type approval to enter the Chinese market. Our remote team manages the entire CPA pattern evaluation and type testing process, keeping your products compliant with China's legal metrology regulations.
đ Request Free CPA ConsultationWhat Is CPA Metrology Type Approval?
CPA metrology type approval (China Pattern Approval, èźĄéćšć ·ććŒæčć) is a mandatory certification required for all measuring instruments subject to legal metrology control in China. Regulated by the State Administration for Market Regulation (SAMR) and conducted by provincial metrology institutes, the CPA process confirms that a measuring instrument's design (pattern) meets the applicable GB/T and JJG standards. Once approved, the product can bear the CPA mark and must pass initial verification before being placed on the market. Without a valid CPA certificate, measuring instruments cannot be legally sold, imported, or used for trade settlement, environmental monitoring, or public health purposes in China.
Our CPA metrology type approval service guides foreign manufacturers through the entire China pattern evaluation journey. We coordinate type testing at designated metrology laboratories, prepare technical documentation according to JJG and GB standards, and submit the application on your behalf. With TEK China, you can navigate the imported measuring instrument certification requirements without a local office.
Our CPA Metrology Type Approval Process
1. Instrument Classification & Standard Mapping
We determine if your product falls under the catalogue of measuring instruments subject to CPA and identify the applicable JJG metrological verification regulation and GB/T type evaluation outline.
2. Type Testing at Designated Lab
Samples are sent to a SAMR-designated metrology institute for comprehensive testing covering accuracy, stability, environmental influence, and electromagnetic compatibility. We monitor the process and address any non-conformities.
3. Technical Dossier & Application Submission
We compile the required documents, including product drawings, uncertainty budgets, software description, and test reports, then submit the complete CPA application to the provincial market regulation bureau.
4. CPA Certificate Issuance & Initial Verification
Once approved, you receive the CPA type approval certificate. We can also assist with arranging initial verification for the first batch of instruments to affix the CPA mark and verification seal.
Products That Require CPA Metrology Type Approval
Only those instruments listed in the catalogue of measuring instruments subject to pattern approval require a CPA certificate. Common examples include:
- Water Meters & Heat Meters: mechanical and ultrasonic water meters, thermal energy meters â tested to JJG 162 and JJG 225
- Gas Meters: diaphragm gas meters, turbine gas meters â evaluated under JJG 577
- Electricity Meters: single-phase and three-phase energy meters â certified per JJG 596
- Weighing Instruments: electronic balances, platform scales, load cells â subject to JJG 539
- Measuring Transducers & Flowmeters: electromagnetic flowmeters, pressure transmitters â covered by various JJG regulations
If your instrument is not listed in the CPA catalogue but is used for trade or legal metrology, voluntary CQC metrology certification may be beneficial. Contact us with your product specifications for a free CPA scope assessment.
Documents Required for CPA Type Approval
To apply for CPA metrology type approval, foreign manufacturers need to prepare the following (we provide translation and documentation support):
- Product technical specifications, measurement principle, and intended use
- Detailed design drawings, circuit diagrams, and software flow charts
- Uncertainty analysis and metrological performance test plan
- Existing OIML, MID, or national type approvals (for reference)
- Quality management system certificate (ISO 9001 or equivalent)
- Letter of authorization for TEK China to act as the CPA applicant representative
CPA Certification Timeline & Cost
The typical CPA metrology type approval process takes 12 to 20 weeks from sample submission to certificate issuance, depending on instrument complexity and the metrology institute's testing schedule. Products with existing OIML certificates may qualify for a streamlined review.
Cost factors include type testing fees, application charges, and professional service fees. We provide a fixed-price proposal after evaluating your measuring instrument â no surprises.
đ Get your personalized CPA type approval quote: Contact us with your instrument details and receive a detailed fee breakdown within 24 hours.
Frequently Asked Questions About CPA Metrology Type Approval
What is CPA certification and who needs it?
CPA (China Pattern Approval) is a mandatory type approval for measuring instruments used in trade, health, safety, and environmental monitoring in China. Any manufacturer of water meters, gas meters, electricity meters, weighing scales, and other regulated instruments must obtain a CPA certificate before selling in the Chinese market.
How long does CPA type approval take?
The average timeline is 12 to 20 weeks, including type testing and document review. Products with a straightforward design and complete technical documentation can often be completed within 14 weeks.
Can I use my OIML or MID certificate to simplify CPA?
While OIML or MID certificates demonstrate international compliance, Chinese CPA testing must be performed by a SAMR-designated metrology institute according to the applicable JJG standard. However, existing test data can be used for pre-assessment and may reduce the testing scope.
Do I need a Chinese agent for CPA application?
Yes, foreign manufacturers must appoint a Chinese legal representative to submit the CPA application. TEK China acts as your agent, handling all communications with SAMR and provincial metrology institutes.
What is the difference between CPA and initial verification?
CPA is a type approval that certifies the instrument's design. Initial verification is the individual inspection of each manufactured unit against the approved type. Both are required for most legal metrology instruments before they can be placed on the market.
Latest CPA Metrology Type Approval Updates
New JJG 162-2026 Standard for Ultrasonic Water Meters Released
April 30, 2026The updated verification regulation introduces stricter accuracy classes and durability tests. Ensure your ultrasonic meters meet the latest requirements.
Top Reasons for CPA Application Rejection and How to Fix Them
March 30, 2026Incomplete uncertainty budgets and missing software documentation are common pitfalls. Follow our checklist to pass pattern evaluation first time.
Contact Us
Get in touch with our team for inquiries, quotes, or more information about CPA metrology type approval
Get In Touch
Have questions about CPA certification, pattern evaluation, or measuring instrument compliance in China? Our experts are here to help with any inquiries about CPA application, type testing, or custom solutions for your metrology products.
- +86 130 5270 9126
- info@tekzenvo.com
- 5-Fa Zhan Building,No.9 Office Area,Kai Fa Qu,Dalian ,Liaoning, China
- Monday - Friday: 9:00 AM - 6:00 PM (GMT+8)