AN-310

Extended

Optical Dissolved Oxygen Sensor

Luminescence sensing with low drift and no electrolyte.

ACCURACY

±0.1 mg/L

RANGE

0

to

20

mg/L

PROTECTION

IP68

TEMPERATURE

0

to

50

°C

AN-310 Optical Dissolved Oxygen Sensor | INSTRAVA

01

OVERVIEW

What it does and why it is built this way

The AN-310 measures dissolved oxygen by the quenching of luminescence on a sensor cap. There is no electrolyte to replace and no flow dependence.

Aeration is the largest energy cost in wastewater treatment; accurate DO control lets blowers run only as hard as needed.

KEY FEATURES

Optical luminescence — no membrane or electrolyte

Low drift, one calibration per year

Built-in self-diagnostics

MEASURING PRINCIPLE

Optical analysis

How this principle works →

OUTPUT SIGNALS

4–20 mA

Modbus RTU

APPROVALS (DEMO)

Nothing to show yet.

02

HOW IT MEASURES

Measuring principle, animated

Drag the slider to see how the measured variable becomes a 4–20 mA signal.

Optical analysis
AN-310 Optical Dissolved Oxygen Sensor | INSTRAVARED EMISSION DECAYτ = 37 µs
DISSOLVED OXYGEN
10.0 mg/L
OUTPUT
12.0 mA
  1. A blue LED excites a luminescent layer on the sensor cap.
  2. The layer emits red light, and oxygen shortens (quenches) the decay time.
  3. The sensor measures the decay time and converts it to oxygen concentration.

03

SPECIFICATIONS

Technical data

Technical specifications
GroupParameterValue
MeasurementPrincipleOptical analysis
Measuring range0 to 20 mg/L
Accuracy±0.1 mg/L
Response time T90< 60 s
Cap life24 months
OutputSignals4–20 mA, Modbus RTU
ProcessConnectionInsertion
Process temperature0 to 50 °C
Max. pressure10 bar
Sensor body316L, POM
EnvironmentIngress protectionIP68
ApprovalsApprovals (demo)None

Values are illustrative demo data for a fictional product. Replace with your own specifications.

04

DOCUMENTS

Datasheets, manuals and certificates

Downloads are direct. No forms, no accounts.

07

FAQ

Questions about this principle

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RFQ

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