Campbell TB4, Product Manual

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TB4, TB4MM, CS700, and CS700H Tipping Bucket Rain Gages
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wires should vary from infinite (switch open) when the bucket is
tipped, to less than an ohm when the bucket is balanced.
Symptom: CS700H not communicating over SDI-12
1. Ensure that both the sensor and power cables are properly connected
(TABLE 7-2 and TABLE 7-3 ).
9.2 Maintenance
During each site visit, remove any debris, such as insects or sediment from the
collection funnel, debris screen, siphoning mechanism, or tipping bucket
assembly.
Verify the tipping bucket assembly moves freely, and that the data logger
records each bucket tip.
9.2.1 Dismantling for Cleaning
Regularly check the following items for cleanliness:
•
Catch filter
• Siphon
• Interior of bucket
•
Top surface of adjusting screws
•
Housing locking screws; lightly lubricate after cleaning
• Insect screens
To access them, dismantle the rain gage using the following procedure:
1. Remove the housing assembly from the base by loosening the three housing
screws and lifting the housing upward (FIGURE 9-1 , FIGURE 9-2 .
FIGURE 9-1. Main Components of the CS700
Tipping
Bucket
Assembly
Funnel
Housing
Housing
Screw
Base
Bullseye
Level
Insect
Screen