Calibration Standards

Inspection is carried out in accordance with CNMV 58-1 and CNMV 58-2 of the Technical Specification for the Inspection of Noise Meters for Public Inspection of the Bureau of Standards and Inspection, Ministry of Economic Affairs.

The main focus is on noise meters that are currently in use or sold domestically in accordance with IEC 61672 class 1 and class 2.

Calibration Items

• The noise meter is valid for two years and is certified for :
1. Structure
2. Instructions for correcting the frequency of checks
3. Self-noise
4. Frequency weighting of acoustic signals
5. Frequency weighting of electrical signals
6. Level linearity
7. Level range switching
8. Burst sound response
9. Overload indication
10. 1k Hz frequency and time weighting


• The frequency oscilloscope is valid for a period of two years and is certified for the following :
1. Structure
2. Flat frequency response
3. Level linearity
4. Relative Decline
5. Overload indication
6. Self-noise

Calibration is based on the following standards:

In accordance with CNMV 205, the technical specification for the verification and inspection of interval average rate devices for metrology and measurement for official inspection by the Bureau of Standards and Inspection, Ministry of Economic Affairs.

The main objective is to automatically measure and record the passage time of a vehicle between two fixed detection zones and to calculate the average completion of a vehicle's interval.

Calibration Items

• The qualification is valid for one year for the following items.
  1. Structure Review
  2. Travel time calibration
  3. Average speed check

Calibration is based on the following standards:

In accordance with the Technical Specification for Calibration and Inspection of Metrology and Weights and Measures Laser Tachymeter CNMV 203 of the Bureau of Standards and Inspection, Ministry of Economic Affairs. The main focus is on the transmission of simultaneous infra-red pulsed light for the detection of police laser tachographs.

Calibration Items

• The qualification is valid for one year for the following items.
  1. Appearance, construction and function check
  2. Calibration of aiming distance
  3. Laser power intensity check
  4. Accuracy check of speed detection

Calibration Standards

The test was carried out in accordance with the Technical Specification for the Calibration and Inspection of Weights and Measures Breathalysers and Analyzers CNMV 126 of the Bureau of Standards and Inspection, Ministry of Economic Affairs. The main focus is on electrochemical testers and infrared analyzers currently in use or available for sale in Taiwan (R.O.C.).

Calibration Items

• The qualification is valid for one year for the following items：
  1. Appearance, construction and functional verification
  2. Construction.
  3. Accuracy and reproducibility.
  4. Emission volume effect.
  5. Exhalation flow rate and injection duration effects.
  6. Exhalation plateau persistence effect.
  7. Exhalation interruption effect.
  8. Drift test.
  9. Memory residual effect.
  10. Physiological effects of (1) carbon monoxide (2) acetone.
  11. Ambient temperature effect test.

Calibration is based on the following standards:

In accordance with the Technical Specification for the Calibration and Inspection of Vehicle Emission Analyzers for Official Inspection of Weights and Measures of the Bureau of Standards and Inspection, Ministry of Economic Affairs, CNMV 99, First Edition.

This specification applies to the inspection of vehicle emission analysers for vehicles with gasoline ignition engines equipped with spark plugs.

Calibration Items

• The qualification is valid for one year for the following items：
  1. Calibration of the instrument's heat engine function
  2. Reaction time calibration
  3. Accuracy and reproducibility
  4. Air Tightness testing
  5. HC residual check function
  6. Pipeline blockage check