Campbell-scientific CS511 Dissolved Oxygen Probe Manuel d'utilisateur télécharger pdf (Page 34)

Appendix C. PT4-L Agitator

FIGURE C-2. DO sensor with PT4 Agitator

C.2 PT4-L Specifications

Diameter: 8.3 cm (3.25 in)

Length: 18.0 cm (7.125 in)

Weight: 0.6 kg (1.25 lb)

Cable length: 3 m (10 ft)

Power requirements: 10.5 to 18 Vdc at the agitator

Active current consumption: 1.1 A

Maximum ON time: 3 s

C.3 Agitator Control

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.

C-2

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Campbell-scientific CS511 Dissolved Oxygen Probe Manuel d'utilisateur Page 34