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Dissolved Oxygen Sensor - SE 707

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- Range: pO2 < 1200 mbar
- Detection limit: 1 ppb
- Signal in ambient air: 290 ~ 500 nA
- Flow dependence: ≤ 5 %
- Permissible pressure range: 0.2 ~ 6 bar absolute
- Permissible temperature range: 0 ~ 80℃
- Temperature detector: NTC 22 kohms
- ATEX Certificate: II 1/2 GD Ex ia IIC T6/T5/T4/T3

Model Number: SE 707
Data Sheet:

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Product Specification

SE 707 Dissolved Oxygen Sensor
Reliable measurement of oxygen traces, also under sterile and hygienic conditions; signal-stable and robust

High resolution of low oxygen concentra-tions, simple and cost-efficient sensor cali- bration in ambient air. No calibration gases. High signal stability, also in the presence of high CO2 partial pressures.
FDA-conforming material with extremely smooth polished surface.
Simple main tenance due to modular design. Sterilizable, autoclavable, and CIP capable. Also suitable for hazardous locations.

SE 707 Dissolved Oxygen Sensor Applications
Beverage filling (e.g. milk, beer), measurement in boiler feed water (detection limit 1 ppb)

SE 707 Dissolved Oxygen Sensor Facts
- high level of process safety
- durable materials
- robust design
- easy to clean thanks to extremely smooth surface
- very simple calibration in air without calibration gases
- cost-efficient service due to easy-to-replace membrane module and interior body
- hygienic design
- very high resolution of 1 ppb in the trace range
- low cross-sensitivity to CO2
- operation also in hazardous locations
- VP screw cap

SE 707 Dissolved Oxygen Sensor Specifications

Range	pO2 < 1200 mbar
Detection limit	1 ppb (3 ppb in liquids containing CO2 )
Accuracy	1 % + 1 ppb (1 % + 3 ppb in liquids containing CO2 )
Response time at 25℃ (air -> N2 )	98 % full scale < 90 s
Signal in ambient air	290 ~ 500 nA
Residual signal	in O2 -free medium: ≤ 0.01 % of signal in ambient air in CO2: ≤ 0.03 % of signal in ambient air
Flow dependence	≤ 5 %
Permissible pressure range (measurement)	0.2 ~ 6 bar absolute
Mechanical pressure resistance	max. 12 bar absolute
Permissible temperature range (measurement)	0 ~ 80℃
Temperature range (stability)	-5 ~ +121℃ (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. 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)