D140 (12mm) Autoclavable Dissolved Oxygen Sensor

The OxyProbe 12 mm autoclavable Dissolved Oxygen sensor has the same rugged performance as the 19 mm and 25 mm sensors. This polarographic sensor utilises the longer silver anode and small cathode which has become the industry standard. It also uses the same semi-permeable, Silicon/Teflon composite membrane, reinforced with stainless steel mesh.

All OxyProbe dissolved oxygen sensors are also available with a right angle connector. This low profile design provides:

• Protection against cable fatigue
• Improved grip for sensor extraction
• Increased clearance between vessels
• Reduced random sensor mobility on flat surfaces (won’t roll off the table)

D140 (12mm) Autoclavable Dissolved Oxygen Sensor Specification

• 316L Stainless Steel
• Serialised for traceability
• RA32 finish with electropolish on wetted parts
• Internal EPDM o-rings
• Membrane cartridge kits available (see Accessories tab for compatible kits)

Membrane Kits

Broadley-James offer a range of membrane kits to suit all our dissolved oxygen sensors. These include everything required to replace the membrane cartridge and internal o-rings. All kits include:

• QC Certificate
• Material Cert

The following membrane kits are suitable for use with the D140 Autoclavable DO Sensor:

Membrane Kit	Example Image	Kit Contents
Single cartridge kit for 12mm DO Sensors Part No. KC1201		One 25 ml bottle of electrolyte One membrane cartridge One set of internal o-rings
Four cartridge kit for 12mm DO Sensors Part No. KC1204		One 25 ml bottle of electrolyte Four membrane cartridge Four set of internal o-rings
25 Piece cartridge kit for 12mm DO Sensors Part No. KC1225		25 membrane cartridges in one easy-to-store box. Internal o-rings, gaskets and electrolyte must be ordered separately.

Compatible Cables

The D140 Autoclavable DO Sensor uses a D4 connector. This industry standard connector was the first, and is still, the best choice for DO sensors. We recommend the following cables for use with the D140 Autoclavable Dissolved Oxygen sensor:

Cable Type	Sensor connector & Device Connector	Device Terminal
D4 plug to Lemo 6
DO Cable D4 to Crimped Ferrules

How to choose a sensor

• Determine how far the sensor should project into the vessel.
• Decide whether a right angle connector is preferred over a straight connector.
• Choose the correct cable length and connector. All DO sensors require cable and connector assemblies.

It is important to regularly maintain the sensors by inspecting and calibrating them. The membrane cartridge should be checked and refilled prior to every use.

12 mm OxyProbe with Straight Connector

The internal seals of an Oxyprobe are all mechanical seals using o-rings. There are no adhesives to leak or fail in process, making this a more rugged and reliable sensor. Replacing the cathode is also much easier and faster since there is no sealant to clean from the threads. No sealant also makes the job of replacing the cathode much faster and cleaner.