Campbell OXYGUARD TYPE III CS512 User Manual download pdf (Page 11)

Campbell Scientific CS512 Oxyguard Type III Dissolved Oxygen Probe

9. Maintenance

The CS512 probe needs little maintenance. Regular cleaning of the membrane is

all that is required. The membrane is very durable and can be cleaned with a cloth

or soft paper. Do not scratch it clean with your fingernail.

10. Agitator Control

In low flow conditions (less than about 5 cm/sec), it may be necessary to add

an agitator to the CS512 probe. Campbell Scientific ships the agitator with a

repeat cycle timer. Using the repeat cycle timer requires no datalogger

programming. However, some users choose to use a solid state relay and have

the datalogger agitate the water on the probe face either periodically

throughout the day or just before measurement. Agitating just before the

measurement saves on power and causes less wear and tear on the agitator and

probe membrane.

The wiring for the agitator as controlled by this example program would be as

follows:

WHITE

BLACK

Agitator

+ -

12 V Battery

4 1

#7321 Relay

Crydom D1D07

3 2

Ground/G

Datalogger

Port C1

FIGURE 10-1. Agitator Wiring

The following instructions would trigger the agitator as discussed in the

agitator manual.

In the CR510, CR10X, and CR23X, use instruction P86 and P22.

1 2 ... 6 7 8 9 10 11 12 13 14 15 16

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Campbell OXYGUARD TYPE III CS512 User Manual Page 11