User`s guide

User’s Guide ______________________________________________________________________
132 __________________________________________________________________M210662EN-A
Solar Panel
Periodic Maintenance
Inspect the module at least twice a year for overall integrity. Make sure
that connections to the battery are tight and free of corrosion.
Dirt accumulation on the module's front surface can reduce the light
energy collected by the module. If the module surface is dirty, gently
clean it with a soft cloth or sponge using water and a mild detergent.
Ultrasonic Wind Sensor
Periodic Maintenance
The accuracy of the sensor depends on the accuracy of two factors:
1. The distance between the ultrasonic transmitter and receiver. This
requires a measurement of the transducer arm trueness.
2. The time-of-flight measurement circuit, which uses a crystal
oscillator for its time reference.
If you use the RS-232 operational modes, conduct periodic testing to
detect slow deterioration of the sensor before it significantly affects
accuracy. Perform the test either in the field or in a laboratory. The
periodic test uses the margin verifier, which is a small echo-free
WARNING
Wear rubber gloves to protect yourself against possible electric shock.
CAUTION
Do not use a scrub brush; it can damage the module front surface.
NOTE
The crystal oscillator is used by the communications circuit for the bit
rate generator. If you use the serial communication modes and the
oscillator loses accuracy, the sensor stops communicating. Thus, the
sensor cannot send erroneous values produced by faulty timing.