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The Physical Standards Laboratory maintains the primary standards
of length, mass, time, temperature, pressure/vacuum, volume, relative
humidity and hardness and also provides calibration services in
the field of dimensional metrology. The primary standard equipment
are calibrated at National Physical Laboratory at New Delhi. In
PSL calibration activities of master instruments from industries
are undertaken with traceability to NPL, New Delhi.
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| Parameter |
Equipment
Available for Caliberation |
Range |
Accuracy |
| Length |
Slip
Guages |
0.5
to 100mm |
00
grade |
| Guage
Blocks |
125
to 500mm |
0
grade |
| Slip
guage caliberator (PC Interfaceable) |
0
to 100mm |
<
0.1 micron |
| Floating
carriage micrometer, Profile Projector, MU Checker, Height Master,
Vernier Calipers etc. |
|
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| Mass |
Standard
Weights |
0.01gm
to 50kg |
Class
E2 |
| Micro
Balance |
0
to 200Kg |
0.1gm |
| Electronic
Balance |
0
to 30kg |
0.1gm |
| Precision
Balance |
0
to 3kg |
0.01gm |
| Volume |
Standard
Volume Jar |
5
litres/20 litres |
0.02% |
| Specific
Gravity Bottle |
50
ml |
0.02% |
| Pressure |
Oil
dead weight tester |
0
to 1200 bar |
0.025% |
| Oil
dead weight tester |
0
to 600 bar |
0.04% |
| Air
dead weight tester |
-1
to 7 bar |
Class
A |
| Absolute
dead weight tester |
0.25
- 20 bar (abs) |
0.005%
reading |
| Multifunction
pressure indicator |
0-20
bar (abs) |
0.025% |
| Twin
caliberating manoscope, high precision manometer, high accuracy pressure
guages ( 0.1% of span or better) are also availabe for caliberation |
| Density |
Hydrometer |
0.6
to 1.6 g/ml |
L
50 |
| Viscosity |
Falling
ball viscometer (for transparent Newtonian liquids and gases), capillary
viscometer, standard liquids etc. |
0.5 to 105
m PaS (Cp)
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Better
than 0.5% |
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