Models D540 and D545 OxyProbe DO Sensor 

After several years of refinement we are introducing our latest set of improvements all bundled up in one new sensor, the OxyProbe? II.

The new membrane design is modeled after our successful 25 mm membrane cartridge. It has an expandable inner Silicone bladder that holds the electrolyte within a 316L stainless steel cage. During SIP processes or during autoclaving the electrolyte turns to steam, but does not distend the measurement membrane because the internal bladder expands first, taking the pressure off the sensitive measurement area. This allows us to have a maximum of electrolyte present, with minimum risk of damage to the sensor. The new membrane cartridge design is easy to use and durable enough to be used many times over if necessary. 

REPLACEMENT PARTS

O-rings: AG-SR15
Membrane Cartridges: Single, Four and 16 piece Cartridge Kits

Choice of Industry Standard 4-Pin Connector or VarioPin

Our standard D9 connector has hermetically sealed gold-plated contacts in a glass insulator that offers the ultimate in signal isolation and transmission. For customers with installed VarioPin cable systems we also offer the VP connector as a standard option on all of our designs.

Hygienic Sensor Design:
• Microrganisms cannot adhere to the sensor surface due to the enhanced finish (N5/Ra15μ in Quality).
• The sensor is fully sterilizable and autoclavable.

Time-Saving Maintenance:
• Membrane body and sensor inner body can be changed out very quickly. A simple membrane body replacement takes just two minutes and can be made on site by the user.
• Due to the modular design, the different sensors have basically the same spare parts. This minimizes inventory stocking requirements.

Features Overview:
• Autoclavable and steam sterilizable.
• Accurate measurement and quick response.
• Long lasting and easy to maintain membranes.
• FDA positive listed materials of construction.
• Hygienically polished N5 surface finish (Max. Ra15μ in).
• Wetted O-rings comply with FDA and USP Class VI standards.

Other Highlights:
• Comes with either waterproof VarioPin or D9 connector.
• T-Pull connector versions allow for easy removal from fermenter and reduces strain on cable.
• Variety of sensor lengths available.

Replaceable Anode/Cathode Assembly
A concept pioneered by Broadley-James, this unique assembly permits the sensor to be repaired quickly and reliably. Send your sensors to us for rebuild and save about half the price of purchasing a complete new sensor assembly!

D140 and D145 DO Sensors

Models D140 and D145 OxyProbes

The OxyProbe 12 mm dissolved oxygen sensor offers the most rugged and versatile design for benchtop vessels. The compact profile saves space on a crowded headplate. It will fit directly into any 12 mm multipurpose port with standard compression fittings or Pg13.5 threads. The small diameter facilitates DO measurement in small volumes, especially bottles and spinner flasks.

The OxyProbe 12 mm DO sensor has the same rugged performance as the 19 mm and 25 mm sensors. This polarographic sensor utilizes 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 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)
 

REPLACEMENT PARTS

Membrane Cartridges: Single, Four, and 25 piece Cartridge Kits
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​SPECIFICATIONS
 
Features:
• 316L Stainless Steel
• Serialized for traceability
• RA32 finish with electropolish on wetted parts
• Internal EPDM o-rings 
How to choose a sensor:
(1) Determine how far the sensor should project into the vessel. 
(2) Decide whether a right angle connector is preferred over a straight connector. 
(3) 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.