German Knick SE 707 Dissolved Oxygen Sensor - SE 707
High-resolution measurement of low oxygen concentrations, simple, efficient, and low-cost sensor calibration in ambient air. No calibration gas required. High signal stability even in environments with high CO2 partial pressure. Materials comply with FDA requirements and have an extremely smooth polished surface. Modular design simplifies maintenance. Sterilizable, autoclavable, CIP-compatible. Also suitable for hazardous areas.
Product Introduction
1. Description of SE 707 Dissolved Oxygen Sensor:
SE 707 Dissolved Oxygen SensorsReliably measures trace oxygen even under sterilization and hygienic conditions; stable signal, robust and durable.
High-resolution measurement of low oxygen concentrations, simple, efficient, and low-cost sensor calibration in ambient air. No calibration gas required. High signal stability even in environments with high CO2 partial pressure. Materials comply with FDA requirements and have an extremely smooth polished surface. Modular design simplifies maintenance. Sterilizable, autoclavable, CIP-compatible. Also suitable for hazardous areas.
2. Applications of SE 707 Dissolved Oxygen Sensor
Beverage filling (e.g., milk, beer). Measurement in boiler feed water (detection limit 1 ppb)
3. Technical Parameters of SE 707 Dissolved Oxygen Sensor
| Range | pO 2 < 1200 mbar |
| Detection limit | 1 ppb (3 ppb in liquids containing CO 2 ) |
| Accuracy | 1 % + 1 ppb (1 % + 3 ppb in liquids containing CO 2 ) |
| Response time at 25 °C (air –> N 2 ) | 98 % full scale < 90 s |
| Signal in ambient air | 290 … 500 nA |
| Residual signal | in O 2 -free medium: ≤ 0.01 % of signal in ambient air in CO 2 : ≤ 0.03 % of signal in ambient air |
| Flow dependence | ≤ 5 % |
| Perm. pressure range (measurement) | 0.2 … 6 bar absolute |
| Mechanical pressure resistance | max. 12 bar absolute |
| Perm. temp range (measurement) | 0 … 80 °C |
| Temp range (stability) | –5 … +121 °C (steam sterilizable/autoclavable) |
| O-ring material | silicone (FDA&USP Class VI tested) |
| Membrane material | PTFE/silicone/PTFE, FDA comp. (reinforced w. steel mesh) |
| Process-wetted sensor parts | 1.4404 stainless steel (material certificate 3.1B) |
| Surface roughness | N 5 (RA < 0.4 µm) |
| Temperature detector | NTC 22 kohms |
| Interior body incl. sensing electrodes | replaceable (ZU 0568) |
| Sensor cap | VP (VarioPin) |
| ATEX Certificate | II 1/2 GD Ex ia IIC T6 / T5 / T4 / T3 |
| Certificates | 3A, 3.1B (EN 10204/3.1.B) |
4. Dimensions of SE 707 Dissolved Oxygen Sensor
