Owner's manual

Model 020C Wind Direction Sensor

7. A full description of sensor wiring can be found by selecting Wiring

Diagram at the left of the Short Cut window. Send the program from the

PC to the CR1000 datalogger if the telecommunications link is active.

5. Overview

5.1 Operation

The lightweight, airfoil vane is directly coupled to a single precision micro-

torque potentiometer. The built-in electronics provide a voltage source for the

potentiometer and amplifies the output signal for transmission over long cable

lengths. The following features increase the reliability of the 020C:

• Inclusion of internal heater, which provides positive clean aspiration

through the bearings, thereby greatly increasing bearing life.

• Built-in electrical field surge protection reduces problems associated

with static fields, near-miss lightning hits, and poor grounding

systems.

5.2 Construction

The vane assembly is easily installed or replaced without requiring

recalibration. All sensor components are constructed with stainless steel and

anodized aluminum.