User manual

66 Capricorn 2000EX Weather Station
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Columbia Weather Systems, Inc.
Enter the barometric pressure offset in 1/100 of in.Hg using the BAR-
OFFSET command.
Calibrating the Wind Sensor
General Maintenance schedule:
6-12 month intervals:
A. Inspect the sensor for proper operation per Section 3.0 of user manual
B. Replacement of wind speed sensor bearing in extremely adverse
environments
12-24 month intervals:
A. Replacement of wind speed sensor bearings
24-36 month intervals:
A. Recommended complete factory overhaul of sensor
Note: Please refer to the Met One 034B wind sensor user manual for
detailed installation, calibration and maintenance information
Calibrating the Temperature Sensors
All Temperature sensors are calibrated at the factory to a superior grade
ASTM mercury thermometer. The calibration offset is recorded on the
temperature sensor and on the end of the cable.
After initializing all the temperature sensors, enter the temperature
offsets using the TCAL command. Please refer to Section 5: Operation
for more information.
To calibrate the temperature sensors on-site, perform the following
steps:
Prepare an ice bath by mixing two cups of crushed ice in two cups of
water. Use an insulated container for best results. Allow the temperature
throughout the ice bath to stabilize by waiting for about twenty minutes.
Stir the ice bath to mix the ice and water, wait for the ice to separate from
the water, place the temperature sensor in the ice bath. Make sure that
the sensor is not in direct contact with ice.
Take a temperature reading from the Capricorn 2000EX using SAMPLE
or POLL.
Calculate the temperature offset as follows:
Temperature offset = (32 - Capricorn 2000EX reading) * 100