Pressure Metrology Division

What is Pressure Metrology?

• Metrology is the science of measurement
• Some important parameters of the measurement system are: precision, traceability, accuracy, error and uncertainty
• Maintenance and calibration of the measurement system ensures the reliability and repeatability of the measurements

Traceability

• The laboratory reference standards and equipment used for the test / calibration are traceable to the National Reference Standards maintained at NPSL
• The NPSL maintains International Traceability through the membership of the International Beauru of Weights and Measures (BIPM), France and Asia Pacific Metrology Program (APMP) and taking part in ILCs / PTs under the regional / international bodies mentioned above

Functions of Pressure Metrology Division

• Realizing the primary standards and maintaining the national / reference standards in the field of pressure metrology
• Maintaining the traceability of pressure standards through ILCs and bilateral arrangements with NMIs of other countries particularly in Asia Pacific region
• To improve and develop measurement techniques for test / calibration in the field of pressure metrology, through conducting of specific R & D work
• To provide test and calibration services to public / private industrial sector and other stake holder especially to the defense organizations of the country
• To provide training, consultancy and advisory services to different public and private departments / organizations of the country in the field of pressure metrology
• To carry out testing & standardization of pressure measuring equipment like, hydraulic, pneumatic and vacuum gauges, dead weight tester, calibrator, switches, modules, transmitters, transducers etc

Future Goals/ Targets/ Plans

• To establish facilities of on-site calibration for the customers in the field of pressure metrology
• To enhance the pressure measurement capabilities and facilities regarding range & accuracy for
  • Pressure Balance upto 60,000 psi and for low pressure upto 10-4 torr
• Improvement in existing measurement techniques including uncertainty budget in the field of pressure measurements
• Visit to concerned local industries to find out their problems related to test/calibration and extend expertise / services to them
• In-house training of the metrologists on calibration techniques in pressure measurements under provision of BMR project
• To enhance the range and accuracy of the parameters in the accredited scope related with pressure metrology
• Participation in national / international ILCs and key comparisons in pressure parameters arranged by concerned metrology bodies and NMIs
• Training of the metrologists on improved calibration techniques in pressure measurements from NMIs of the Asia Pacific Region and the developed countries
• Interaction with other NMI’s and metrology institutes regarding expert visits and the latest calibration techniques
• Realization and establishment of primary standards of pressure measurement and improvement in calibration techniques
• Extension in accredited scope related with parameters of pressure measurement, especially for low pressure measurement
• Strengthening of existing infrastructure & man power in the division
• Improvement in the Calibration Measurement Capability (CMC) of parameters related with pressure measurement

Accredited Calibration Facilities

Hydraulic Pressure

Parameter	Range	Accuracy
(a)	10 to 18000 psi	0.015%
(b)	0.1 to 1100 bar	0.03%
(c)	10 to 10,000 psi	0.008%

Low Pressure (Pneumatic & Vacuum)

Parameter	Range	Accuracy
(a)	-1 to 20 bar	0.015%
(b)	70----110 KPa, 10----16 psi	0.003%
(c)	Upto 3000 psi	0.008%

Contact Personnel

Head Pressure Metrology Division
Phone: +92 51 9257462-7, Ext. 243
Fax: +92 519258162
E-mail: jamil_rao@yahoo.com