OxyMini Fiber Optic Oxygen Meter for Minisensors

A generation of sensors based on luminescence lifetime.

Key Features:

• The measurement procedure doesn't use any oxygen
• Unaffected by electromagnetic and electrical interference
• Outstanding long-term stability
• No extensive polarization (as with Clark-type O2 electrodes) is required
• Rapid reaction time for MicroTip sensors is < 0.5 s
• MicroTip sensors with probe sizes as small as 50 µm
• Dry gas allows for measurement
• Sensor tips can be optically isolated for fluorescent or photosynthesis-active substances
• The system does not contain the sensors

Benefits

• Due to the fact that it is based on luminescence lifetime detections, it is unaffected by light source stability and intensity variations
• Portable, small meters can be used both inside and outside

Applications

• Process control includes checking the quality of packages and the bottling plant in breweries (OxyMini)
• Biotechnology applications include cell culture medium management and non-invasive bioreactor control (OxyMini)
• Oxygen sensors being inserted into soil and trees (OxyMini)
• Marine sediment, soils, or tissue oxygen profiles (OxyMicro)
• Placement in live tissue, such as the heart or muscles (OxyMicro)
• Control of cell culture medium in biotechnology (OxyMicro)

The sensor system's measurement method is based on detecting oxygen concentrations as a function of luminescence lifetimes, whether in dissolved or gaseous phase conditions.

Independent of Light Source Stability/Intensity

The stability of the light source and variations in ambient light place restrictions on the accuracy of conventional fiberoptic oxygen sensor systems based on intensity measurements. Measurements made with a luminescence lifetime detector are not impacted by changes in the sample's optical properties (such as turbidity, refractive index, colour, etc.), changes in the stability of the light source, or intensity fluctuations brought on by fiber bending.

Calibration: The sensors can be calibrated using a straightforward two-point calibration at 100% and 0% air saturation.

Inside and Outside, Small, Portable Meters

Compact and portable fiber optic oxygen meters are the OxiMini and OxyMicro. They may be connected to a PC using an RS232 interface and are made for indoor and outdoor use. With the help of the provided program, data can be seen, examined, and stored. There are a wide variety of sensors available.

OxyMini systems

For fiber optic O2 minisensors, the OxyMini is a one-channel fiber optic O2 meter. The 2 mm polymer optical fibers used in these sensors, which have a 2.5 m length, form their foundation.

MiniTip – This dipping probe (501641) has an O2 sensitive coating on a polymer optical fiber with a 4mm tip diameter. 0 to 100% is its range. It responds in about 40 s (t90).

MiniFlow – The MiniFlow probe (501642) is a miniature fiber optic chemical sensor built into a typical T-shape flow through cell that is simple to connect to external tubings using Luer-Lock adapters. The cell can be used to pump liquids. It has an excellent long-term stability and a response time (t90) of about 40 s.

MiniFoil – Glass vials can be filled with sensor material that is adhered on a polyester support disk of 1 cm2. Through the vial's wall, non-destructively and non-invasively the oxygen concentration can be measured. Use a plastic fiber optic cable (501644, 01645) to illuminate the sensor foil. The flask's wall must be clear or non-fluorescent. (T90 response time of 50s.) This material can be inserted into human or animal tissues, or into special housings.

Process control and biotechnology applications benefit most from the OxyMini system's optimization. The sensor system's measurement method is based on the detection of oxygen content as a function of luminescence lifespan in settings with either dissolved or gaseous phases. The fiber optic oxygen meter is lightweight and portable. It has an RS232 interface and was created for indoor and outdoor use. With the help of the provided software, data may be displayed, examined, and stored. There is a wide selection of sensors available for the majority of biomedical applications.

Measurement Principle

The accuracy of conventional fiber-optic oxygen sensor systems based on intensity measurements is constrained by the stability of the light source and variations in the ambient light. Measurements made with a luminescence lifetime detector are not impacted by changes in the sample's optical properties (such as turbidity, refractive index, colour, etc.), changes in the stability of the light source, or intensity fluctuations brought on by fiber bending. With these benefits, WPI's OxyMini and OxyMicro is the most cutting-edge and dependable fiber-optic oxygen system on the market.

Calibration

Simple two point calibrations at 100% and 0% air saturation can be used to calibrate the sensors.