Standards

JJF 2267-2025 Active

JJF 2267-2025 Calibration Specification for Rotating-vane Atmospheric Electric Field Meters

This specification applies to the calibration of field-milling (or rotating) atmospheric electric field instruments (hereinafter referred to as atmospheric electric field instruments) with a measurement range of (-100 to 100) kV/m.

Publish Date: 2025-06-11

JJF 2256-2025 Active

JJF 2256-2025 Calibration Specification for Body Scales

This standard applies to the calibration of weight scales used to measure human body weight.

Publish Date: 2025-06-11

JJF 2263-2025 Active

JJF 2263-2025 Calibration Specification for Medical Liquid Microflow Syringe Pumps

This specification is applicable to the calibration of medical liquid micro-flow pumps operating in a flow range of (0.1~100) mL/h. The calibration of multi-functional medical liquid flow pumps within this flow range can also be carried out in accordance with this specification.

Publish Date: 2025-06-11

JJF 1482-2025 Active

JJF 1482-2025 Program of Pattern Evaluation of Opacimeters

This outline is applicable to the type evaluation of the split-flow transmission smoke meters (also known as opacimeters, opaque smoke meters, etc.) classified under code 46481000, and to the conformity inspection of approved models.

Publish Date: 2025-06-11

JJF 2249-2025 Active

JJF 2249-2025 Program of Pattern Evaluation for Thermal Gas Meters(for Trial Implementation)

This outline is applicable to the type evaluation of thermal gas meters (hereinafter referred to as gas meters) classified and coded as 12220000, with natural gas as the measurement medium, a maximum working pressure of no more than 50 kPa, a maximum flow rate of no more than 160 m3/h, and a measurement principle based on heat transfer.

Publish Date: 2025-06-11

JJF 2259-2025 Active

JJF 2259-2025 Calibration Specification for Magnetometer Verification Equipment

This specification is applicable to the calibration of magnetic field meters for DC magnetic fields ranging from 1 mT to 2.5 T.

Publish Date: 2025-06-11

JJF 2268-2025 Active

JJF 2268-2025 Retroreflection Metrology Terms and Definitions

This standard defines the commonly used terms and definitions in retroreflective measurement.
This standard is applicable to the preparation of technical specifications in the field of retroreflective measurement, and it can also be referenced and used in related fields.

Publish Date: 2025-06-11

JJF 2269-2025 Active

JJF 2269-2025 Calibration Specification for Retroreflection Measurement Standard Systems

This specification is applicable to the calibration of standard devices for retroreflection (reflective reflection) measurement. The retroreflection measurement system for detection can be used for reference.

Publish Date: 2025-06-11

JJF 2271-2025 Active

JJF 2271-2025 Calibration Specification for Metallic Stress Relaxation Testing Machines

This specification is applicable to the calibration of metal stress relaxation testing machines.

Publish Date: 2025-06-11

JJF 2258-2025 Active

JJF 2258-2025 Calibration Specification for Natural Gas Calorific Value Meters of Correlation Technique

This specification applies to the calibration of associated method natural gas calorific value measuring instruments with a measurement range of 25 MJ/m3 to 50 MJ/m3.

Publish Date: 2025-06-11

JJF 2250-2025 Active

JJF 2250-2025 Program of Pattern Evaluation of Digital Input AC Electricity Meters

The type evaluation outline is applicable to the type evaluation of digital AC energy meters classified and coded as 15260000.
This outline is applicable to the type evaluation of digital AC energy meters that are installed and used in 50 Hz or 60 Hz power grids, accessed via electronic transformers (ET) or standalone merging units (SAMU), and whose input complies with DL/T 860.92-2016 or GB/T 20840.9-2017 for digital sampling values.
This outline is not applicable to energy meters with analog input.

Publish Date: 2025-06-11

JJF 2255-2025 Active

JJF 2255-2025 Technical Specification for Weighing Indicator Internet of Things Detection

This standard applies to the measurement of the data transmission function of weighing instruments with Internet of Things (IoT) capabilities.

Publish Date: 2025-06-11