Testing and Calibration
Tow Tank
Our
Hydrological Services Division offers instrument
calibration and current meter individual rating for the
equipment manufactured by us or we can calibrate and rate
other manufacturers' equipment.
The Towing Tank and Carriage are used to calibrate all
types of current meters, sediment samplers and can be used
for drag and other hydrodynamic tests. The full depth of
the tank is 3 m. of which 1.5 m is below the ground level.
Subsurface observations are possible at observation
windows in the sidewall at the head and at the midpoint of
the tank. The meter calibrations meet ISO standard 3455.
Meters can be calibrated by rod or cable suspension
methods. The calibration equation is computed using a
linear regression spreadsheet giving slope and intercept
(offset).
Specifications:
Length 122 m, width 5 m, depth 3 m; normal water depth
2.7 m; carriage length is 3 m, width 5 m; carriage
controlled speed range 0.5 to 600 cm/sec. (0.1 to 20
ft/sec) maximum speed can be maintained for 12 sec;
overhead hoist capacity 1 ton.
1101-001 Rating velocity
table (Barel)
1101-002 Rating equation
calibration (Bargo)
Sensor
Calibration
Our Hydrological Services Division offers calibration
for the sensors commonly used with our data loggers and
RTUs. Customers can request calibration of:
- Air temperature sensors
- Relative humidity sensors
- Wind speed sensors
- Tipping bucket rain gages
- Barometric pressure sensors
Sensor
calibration is performed with two environmental chambers
that can be used for air temperature testing and a
temperature bath for water temperature testing. A wind
tunnel can generate wind speeds from 0 to 150 knots. As a
manufacturer of tipping bucket rain gages, Rickly
Hydrological Co. is equipped to calibrate these sensors
also. Calibration to IS0 7309 standard.
1101-010 Calibration, Air
Temperature Sensor
1101-011 Calibration,
Humidity Sensor
1101-012 Calibration, Wind
Speed Sensor
1101-013 Calibration,
Barometric Pressure Sensor
1101-014 Calibration,
Tipping Bucket Rain Gage
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