Meteorological Sensor Calibration Laboratory
The Meteorological Sensor Calibration Laboratory is developed for testing and
calibrating Automatic Weather Station sensors.
| Parameter |
Range |
Resolution |
Reference Standard & Accuracy |
No. of Sensors Tested in One Setting |
| Rainfall intensity |
25 to 775 mm/hr |
0.1, 0.2, 0.5, 1 mm/hr |
Load cell (0.001 gm) |
2 |
Air temperature in liquid bath
(Stability: 0.001°C) |
-40°C to 60°C |
0.001°C |
PT100 Sensor (0.01°C) |
45 |
| Air temperature in compact chamber |
-5°C to 60°C |
0.001°C |
PT100 Sensor (0.01°C) |
7 |
Relative humidity in compact chamber
(Stability: 0.1% RH) |
5% to 95% RH |
0.01% RH |
Dew point hygrometer (0.1% RH – Derived)
Dew point accuracy: 0.15°C
|
7 |
| Atmospheric pressure in compact chamber |
550 to 1100 hPa |
0.001 hPa |
Oscillating U-tube based Digital Barometer (0.10 hPa) |
15 |
Unique Features of the Meteorological Sensors Calibration Laboratory
- Auto calibration and adjustment of sensors fully through software including report generation
- Provision to calibrate multiple sensors simultaneously
- Calibration methods follow WMO No. 8 – Guide to Instruments and Methods of Observation (Vol-I)
- Measurements are traceable to NIST / NPL
Apart from this, the laboratory is equipped with high precision portable field calibrator for on field performance testing of AWS at different sites across India. The testing facility for oversized air temperature sensor and relative humidity sensor is also available in this laboratory.
