SE740 Optical Oxygen Sensor | M12 (8 pins) | 325 mm | For demanding hygienic environments

Length

120 mm

215 mm

325 mm

425 mm

Product number: SE740/3

SE740 Optical Oxygen Sensor | M12 (8 pins) | 325 mm | For demanding hygienic environments

Optical oxygen measurement based on fluorescence quenching technology

Flow-independent measuring principle
No polarization required
Replaceable sensor cap
Integrated wear monitoring
Stainless steel 1.4435, Inspection Certificate 3.1, Ra < 0.4 μm
FDA compliant materials
Digital communication

Flow-independent optical oxygen sensor with fast response. Ideal for measurements in demanding hygienic environments. Steam-sterilizable, autoclavable, and CIP-capable.

Applications
Food, pharmaceutics, fermentation, and process

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Technical details

Measurement Parameter:	Oxygen
Pressure range Prel:	–1 ...12 bar
Temperature range:	0 ... +85 °C (Oxygen measurements) –10 … +140 °C (steam sterilization)
Connector:	M12 (8-pin)
Measuring Range:	DO: 4 ppb … 25 ppm pO₂: 0.1 ... 600 mbar
Length:	325 mm
Process Connection:	PG 13.5
Temperature Detector:	Yes, for temperature compensation
Measuring principle:	Optical
Process-wetted sensor parts:	Stainless steel 1.4435, silicone FDA, EPDM FDA
Max. CO₂ partial pressure:	12 bar
Drift at 25 °C and constant conditions:	< 1 % per week
Surface roughness of steel body:	Ra < 0,4 μM (N5)

Downloads

Manuals

[3142] User Manual

SE740 Optical Oxygen Sensor

Version 02

Brochures

[13395] Brochure

Sensors - For measuring pH/ORP, conductivity or oxygen. Digital or analog.

Data Sheets

[3131] Data sheet

SE740 Optical Oxygen Sensor

Product Description | Specifications | Product Range

Certificates

[14511] EU Declaration of Conformity (DE, EN, FR)

No. EU260612A | 2026-06-12

Digital Sensors, non Ex

[14155] Declaration of Compliance 2.1 (DE, EN)

according to EN 10204 | gemäß EN 10204

O-Ringe aus EPDM oder Silikon | O-rings made of EPDM or Silicone

Used in Process or Applications

Boiler Feed Water Circuits

Measurement of pH values, dissolved oxygen, and conductivity as key parameters in the boiler feed water circuit.

Combined Cycle Power Plants

Measurement of pH values, dissolved oxygen, and conductivity in boiler feed water, steam, and condensate in combined gas turbines in power plants.

Water Treatment Systems

Measurement of pH value, dissolved oxygen, and redox potential in various applications during the water treatment process of power plant wastewater.

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