Campbell OXYGUARD TYPE III CS512, Инструкция по эксплуатации

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Campbell Scientific CS512 Oxyguard
Type III Dissolved Oxygen Probe
An accurate and reliable sensor is a critical element in any measurement system. The
Oxyguard Stationary Probe meets these criteria for the measurement of dissolved oxygen.
1. General Information
The Oxyguard Stationary Probe is a galvanic probe which produces a millivolt
signal proportional to the amount of oxygen present in the measured medium.
Oxygen diffuses through the membrane onto the cathode, reacts chemically, and
combines with the anode. An electrical current is produced by this chemical
reaction which is converted from microamps to millivolts by an in-line resistor.
An in-line thermistor also conditions the signal providing automatic temperature
compensation. With these features, the probe produces a millivolt output
proportional to the oxygen present in the medium in which it is placed. The probe
consists of two parts, an upper part with cathode, anode and cable, and a lower part
comprising a screw on membrane cap with fitted membrane. The cap is filled with
electrolyte and simply screwed onto the top component.
The probe is self-polarizing and requires no external power source. There are two
wires to connect.
Because the probe's output is linear, it is possible to connect it directly to a data
acquisition system capable of handling the small millivolt signal.
The probe's robust construction and simple design make maintenance and
servicing it straightforward. There is no need to send the probe back to the factory
for servicing. It utilizes a strong, easy-to-clean and easy-to-change membrane in a
screw-on membrane cap. Regular servicing is not required. When necessary the
probe can be fully overhauled in five minutes.
FIGURE 1-1. CS512