Model 505
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OxyGuard 505 Probe Dissolved Oxygen probe with built-in transmitter for Deep Sea or Profile Measurements The OxyGuard 505 Probe is a combined dissolved oxygen sensor and transmitter with galvanic isolation. It is designed to be fitted to a sonde or sensor array for measurements in the sea, lakes or similar. Connector or cable & fitting to suit customer specification Two types are available. When fitted with an Ocean sensor the OxyGuard 505 can be used at depths up to 2000 m, and when fitted with a Profile sensor it can be used for making profiling measurements where it is moved through the water. The Profile sensor can, however, only be used at depths up to 150 m. The OxyGuard 505 Probe has separate output signal and power supply. It therefore has two connections for the voltage output and two for the supply. It can be powered by supplies between 8.5 and 24 VDC. The probe can be supplied with a cable, with a cable and connector or be fitted with a connector to suit user specifications. The output signal is directly proportional to the oxygen partial pressure sensed and is compensated for the temperature characteristics of the membrane. As standard the output signal of 0-5V corresponds to 0-200% saturation dissolved oxygen. OxyGuard dissolved oxygen sensors have a number of advantages over other types of sensor that make the OxyGuard 505 a very accurate, reliable and easy to use device. O-ring here for measurement O-ring here for transport Deep Sea (Ocean) sensor with protection cap Profile sensor (storage cap removed)

Nominal 0-5 V = 0-200% saturation. 8.5 to 24 VDC 0 -40°C Built into probe. To customer specification. +/- 1% of measured value, temperature unchanged. +/- 2% of measured value between 5 and 25°C Max 200 bar (2000 m submersion). With fast response membrane 10 sec. to 90% at unchanged temperature. Max 15 bar (150m submersion). 90% of final value within 10 sec. at unchanged temperature. Temperature compensation: approx. 10 sec. per 10°C. Technical Advantages: * Not cross-sensitive to hydrogen sulphide. * Galvanic type - the OxyGuard probe makes its own electricity. -Uses a chemical principle...