Power & Energy

AC power and energy standard are maintained by Power/Energy Laboratory of NMIM. The function of the laboratory is to provide measurement and calibration of AC power and energy. In legal metrology, the laboratory involved in pattern approval of electricity meter used for trade.  

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Vibration

vaVibration Laboratory has developed high accuracy capability to support national vibration and shock measurement activities. The chart illustrates the traceability for vibration measurement in Malaysia.

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vc The highest reference standard established is laboratory standard accelerometer B&K 8305 that is maintained using Laser Interferometry Calibration System. The frequency range is from 5 Hz to 10 kHz with the best uncertainty of 0.4%. 

Reference standard accelerometer B&K 8305

 

 

Time And Frequency

tf3NMIM’s Time and Frequency laboratory maintains two high performance and three standard performance Caesium (Cs) atomic reference frequency standards. One of the high performance Cs reference frequency standards is designated as Malaysian National Frequency Standards (MNFS), with accuracy of ± 5 × 10-13 s .

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 With these standards and continuous All-in-View GPS time comparisons, where the data is contributed to Bureau Weights and Measures (BIPM) for the generation of the International Atomic Time (TAT) scale. NMIM is capable to provide traceability to the SI Unit of time interval for time and frequency measurement.

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 Malaysian Standard Time (MST) is UTC (NMLS) + 8 Hours, due to the time zone selected which is the longitude of 1200 East. UTC (NMLS) is currently defined to be the epoch of the 1 pulse per second timing signal output at the rear panel of the Malaysian National Frequency Standards. NMIM steers the frequency of the standard to maintain UTC(NMLS) to be within approximately 1 ms of the Coordinated Universal Time (UTC).

AC & Low Frequency

AC & Low Frequency Laboratory are capable to generate and measure DC to 10 MHz and beyond covering voltage, current, and resistance parameters to support national AC & Low Frequency measurement activities. The chart illustrates the traceability for AC & Low Frequency in Malaysia.

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The highest standards are primary Thermal Converters and AC DC Shunts maintained by utilizing comparison method of AC-DC. Different comparison methods for accurate RMS value determination of AC Voltage and AC Current at low frequencies are traceable to the national standard of AC Voltage and Current. The frequency range is from 10 Hz to 1 MHz with best uncertainty of 5 uV/V. 

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Thermal Converter

Reference Multimeter

Acoustics

a1aAcoustic Laboratory has developed high accuracy capability to support national acoustics measurement activities. The chart illustrates the traceability for acoustics measurement in Malaysia.

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a1cThe highest standards are 1-inch laboratory standard microphone (LS1P) and ½-inch laboratory standard microphone (LS2P) that are maintained using Reciprocity Calibration System. The frequency range is from 20 Hz to 25 kHz with the best uncertainty of 0.04 dB at 1 kHz. 

 
 
   
<--- 1-inch and ½-inch laboratory standard microphone

NMIM Info

NMIM plays an important role in disseminating the traceability of measurement to the whole country based on the International System of Units. Just like other world standard laboratories, NMIM has great responsibility in ensuring the national metrology infrastructures meet and comply with the global measurement standards.

Get In Touch

National Metrology Institute of Malaysia (NMIM)
Lot PT 4803, Bandar Baru Salak Tinggi
43900 Sepang
Selangor Darul Ehsan

Email: irene@sirim.my , serviceNMIM@sirim.my

DID: +603 - 8778 1605

FAX: +603 - 8778 1616