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Home > Sensors > Single Use Loop > TruFluor DO

TruFluor DO

TruFluorDO

Features

■ Sheath, optical reader and transmitter
■ Excellent precision and accuracy
■ Gamma radiation resistant Smartchip for self-calibration and lot traceability
■ USP Class VI, gamma radiation resistant wetted materials
■ Plug-and-play

TruFluor DO
Single Use Optical Dissolved Oxygen Probe

The TruFluor™ dissolved oxygen and temperature sensor is a single-use solution consisting of a disposable sheath, an optical reader, and a transmitter. The single-use sheath can be pre-inserted in a disposable bioreactor bag port and irradiated with the bag, in order to both preserve and guarantee the sterile barrier. All wetted materials of the sheath are USP class VI compliant.

The optical reader utlizes an LED and a large area photodiode with integrated optical filtering, that minimizes photo-degradation of the acting sensing element. The design has been optimized to provide accurate in-situ measurement of dissolved oxygen using phase fluorometric detection in real time. The temperature measurement leverages a 316L stainless steel thermal window embedded in the sheath, and provides a highly accurate temperature measurement that can be used as a process variable or fortemperature compensation.

Environmental Specifications
Parameter Units Min Type Max
Operating
Temperature		 °C 4 45
Pressure Bar (psi) (0 non-
freezing)		 1
(14.7)		 2
(29.4)
Storage Temperature °C 0 22 65
Relative Humidity
(non-condensing)		 % 0 60 100
Altitude feet 40k
Materials USP Class VI and 316L Electro-polished SS
Performance Specifications

Min Max
Sample Rate Sample rate can be set so that samples are taken in increments from 1 second to 30 minutes
Measuring Range O2 ~ 0 52.5% O2 ( 250% air-sat)
Limit of Detection 0.03% O2
Precision 0.55% or < 3% (whichever is greater) of reading at all temperatures and O2 levels < 21% *
Accuracy at 20 °C < ± 1% at 20.95% O2
Response Time (sec) <40 (agitated, 90%) <60 (not agitated, 90%)
Calibration Pre-calibrated (gamma-radiation-resistant chip)
Gamma Radiation Tested to 50 kGy (typical 25 - 40 kGy)
Cross Sensitivity Organic solvents (e.g. toluene, acetone, benzene, methylene chloride) SO2 and Cl2 gas
Temperature Accuracy Precision
From 5 to 45°C ** ± 0.25°C ± 0.1°C
From 15 to 40°C * ± 0.15°C ± 0.1°C

*Statistically significant data taken at ~15% O2 and 37.5°C. All data
extrapolated therein. Reader to reader precision for any sheath.

** With ambient temperature ~ 25°C

TruFluor is a trademark of Finesse Solutions,
LLC. © Finesse Solutions, LLC, 2010.