General Description

The dissolved oxygen sensor is suitable for use in monitoring systems for long-term measurement.

The sensor can be used in salt water, lakes, and rivers (fresh or brackish water) to measure dissolved oxygen.

A multi-core 4-wire subsea cable is used for power supply and data acquisition.
A 9-24 V DC power supply is used as the power source for the sensor. Other voltages for the sensor power supply are available upon request.  The signal output can also be adjusted on request.

Mechanics

The sensor consists of the following parts:

• Pressure tube
• Oxygen sensor head
• Sensor cap with pressure compensation and membrane
• Cover with underwater connector (optional with locking sleeves)
• Two socket head screws
• Electronic circuit board

The sensor housing is mainly made of corrosion-resistant materials such as plastic (POM) or titanium, regardless of the area of application. A pressure resistance of at least 6000 dbar is guaranteed.

The connector is made of titanium and neoprene. It is screwed into the lid of the pressure tube and sealed with an O-ring. The locking sleeves usually provided for this type of connection are not used because the water pressure is sufficient to securely connect the sensor and inline connector. The lid is attached to the pressure tube together with the connector by means of two hexagon socket screws. The part of the sensor head installed in the housing is sealed at the bottom with two O-rings and at the top with one O-ring. The upper part of the pressure tube is glued to the sensor head for additional security.