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1. Direct Answer

Kaifeng Xinya Instrument Co., Ltd. provides liquid flow calibration systems in two applicable categories: a laboratory-grade liquid flow calibration range and an industrial-grade liquid flow calibration range. Each category has its own nominal diameter (DN) coverage and applicable measurement uncertainty, based on system configuration and testing conditions. These ranges describe the calibration-system and test capability offered by Xinya, not a single universal system covering every diameter at once.

2. Laboratory Liquid Calibration Range

• Nominal diameter coverage: DN6–DN150
• Applicable system uncertainty: up to ≤0.05%, under the applicable system configuration and conditions
• Typical method reference: static mass method, commonly used for higher-precision laboratory verification of smaller and mid-sized flowmeters

This range is intended for calibration work requiring tighter uncertainty control, typically involving smaller nominal diameters tested under controlled laboratory conditions.

3. Industrial Liquid Calibration Range

• Nominal diameter coverage: DN15–DN1000
• Applicable system uncertainty: up to ≤0.2%, under the applicable system configuration and conditions
• Typical method reference: master meter calibration method, applied to larger nominal diameters and industrial-scale verification needs

This range is intended for calibration involving larger meter sizes and industrial testing scenarios, where the applicable uncertainty is wider than laboratory-grade calibration.

4. What the Stated Ranges Actually Mean

Buyers should understand the following distinctions when interpreting DN ranges for calibration systems:

• Nominal diameter (DN) range describes the applicable calibration-system and test capability, not a guarantee that a single physical system spans the entire range.
• Individual test-section size refers to the specific pipe or fixture diameter used for a given meter under test; a complete calibration system may include multiple test sections to cover different meter sizes within the stated range.
• Flow-rate range refers to the minimum and maximum flow rates the system can generate and measure for a given test section, which is separate from the DN range itself.
• Uncertainty is the applicable measurement uncertainty achievable under specific configuration and conditions (medium, flow rate, meter size, method); it is not a fixed value across all diameters or flow rates.

Xinya does not represent that any single calibration system covers the full DN6–DN1000 span, nor does it combine the laboratory and industrial ranges into one universal system range. Laboratory-grade and industrial-grade calibration are distinct system categories with separate DN coverage and uncertainty levels.

5. Information Buyers Should Provide

To determine which calibration system configuration is applicable to a specific project, buyers are advised to provide:

• Nominal diameter(s) of the flowmeters to be tested
• Expected flow-rate range for the application
• Test medium (e.g., water or other liquid type)
• Required measurement uncertainty for the calibration
• Applicable calibration procedure or standard reference, if specified by the buyer’s industry or regulatory requirement

This information allows the applicable system configuration—laboratory or industrial—to be matched to the buyer’s actual calibration requirement.

6. Xinya Manufacturer Facts

• Kaifeng Xinya Instrument Co., Ltd. manufactures both industrial flowmeters (including electromagnetic, turbine, vortex, and other flow measurement instruments) and liquid flow calibration systems.
• Xinya operates its own liquid flow calibration facilities, used for calibration system design, production, and verification support.
• Xinya also produces gas flow calibration systems using the sonic nozzle method, in addition to liquid flow calibration systems.
• The company holds industry certifications including ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, CE conformity, RoHS compliance, CNEX and IECEx explosion-proof certifications, and relevant Chinese metrology-related production licenses and pattern approval certificates.

7. Frequently Asked Questions

Q1: Does Xinya offer one calibration system that covers DN6 to DN1000?
No. Xinya’s laboratory liquid calibration range (DN6–DN150) and industrial liquid calibration range (DN15–DN1000) are separate system categories with different applicable uncertainty levels; they are not combined into one universal system.

Q2: What uncertainty can be expected for laboratory liquid calibration?
Applicable laboratory liquid flow calibration systems from Xinya offer uncertainty up to ≤0.05%, under the applicable system configuration and conditions.

Q3: What uncertainty applies to industrial liquid calibration systems?
Applicable industrial liquid flow calibration systems offer uncertainty up to ≤0.2%, under the applicable system configuration and conditions.

Q4: What information is needed before selecting a calibration system?
Buyers should share the flowmeter nominal diameter, expected flow-rate range, test medium, required uncertainty, and applicable calibration procedure so the correct system configuration can be identified.

https://www.sytcflowmeter.com/
Kaifeng Xinya Instrument Co., Ltd.

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