Centec Oxytrans TR

Sensors provide unparalleled precision for inline control

Oxytrans TR inline disolved oxygen content sensor

Description

The OXYTRANS sensor is the perfect choice for the continuous monitoring of dissolved oxygen levels in both liquids and gases. This instrument is meticulously designed to meet the demands of applications that require maximum sensitivity and the highest level of accuracy. Furthermore, it is user-friendly and virtually maintenance-free, making it an excellent tool for various industries.

Unlike some other oxygen sensors, the OXYTRANS does not require the use of electrolyte solutions, and it does not consume oxygen during the measurement process. This is a significant advantage in terms of ease of operation and cost-effectiveness.

The core of its optical measurement technology is based on luminescence quenching, a process involving the non-emission-based redistribution of excitation energy through molecular interaction. Within the sensor's measuring head, there is a small glass component that contains a thin layer of indicator molecules referred to as the optical window. These indicator molecules are exposed to blue-green light emitted by an LED within the oxygen sensor. Upon exposure, they absorb the incident light and transition to a higher energy state. After a certain time, these molecules return to their ground state, emitting red light during this process. This red light is then detected within the sensor.

Liquid Phase Measuring Range	I) 1 ppb - 2 ppm or II) 30 ppb - 35 ppm
Liquid Phase Accuracy	I) ± 1 ppb or II) ± 30 ppb
Gas Phase Measuring Range	I) 0 - 4,2 % O₂ or II) 0 - 50 % O₂
Gas Phase Accuracy	I) ± 0,002 % O₂ or II) ± 0,03 % O₂
Response Time	t90 ≤ 10 s
Pressure of Operation	max. 12 bar
Temperature of Operation	- 5 - + 55 °C (option: + 98 °C)
Temperature Sensor	Pt100
Material	1.4404/AISI 316L, silicone (FDA), PTFE (FDA)
Connections	compatible to Varivent© inline-housings DN40 - DN150; DIN; ANSI; others on request
Input	3 x digital (24 VDC)
Output	3 x digital (24 VDC) & 2 x analog (4 - 20 mA)
Profibus DP	option
Enclosure Rating	IP65
Power Supply	24 VDC

Crucially, when O2 molecules are present, the energy is transferred from the excited indicator molecules to the oxygen molecules. This molecular interaction results in the redistribution of excitation energy without any resulting emission. Consequently, the detected signal decreases with an increasing concentration of oxygen molecules in the substance being measured. Importantly, other gases do not absorb this energy, ensuring they have no impact on the measurement results.

Furthermore, any potential temperature fluctuations affecting the measured signal are automatically compensated for by an internal Pt100 sensor. This feature ensures the accuracy and reliability of the sensor's readings even under varying environmental conditions.

In summary, the OXYTRANS sensor is a highly precise, efficient, and maintenance-free instrument for continuous dissolved oxygen measurement, offering valuable insights for a wide range of applications.

Optical technology; no need for electrolyte and membrane changes
Short response time and excellent long-term stability
Applicable for a wide range of concentrations and temperatures
Highly accurate and virtually maintenance-free
Various flange connections available
Hygienic execution and full CIP capability