YJJ 0393 0000 0-25 Vol.% Electrochemical Oxygen Sensor Testo 340/Testo 350 Portable Gas Analyzer

Product Description:

YJJ 0393 0000 0 - 25 Vol.% Electrochemical Oxygen Sensor Testo 340 / Testo 350 Portable Gas Analyzer

Features:

I. Basic Model Specification

Order Number: 0393 0000

Detection Medium: Oxygen (O₂)

Detection Principle: Galvanic Electrochemical Cell (No external power supply required)

Compatible with Complete Instruments: Testo 340 / Testo 350 Portable Gas Analyzer. This is for replacing the original consumable core of the instrument from the manufacturer. It cannot be used separately outside the machine.

Replacement for Previous Model: 0393 0001 (Outdated Upgrade Model)

II. Core Technical Parameters Table

Parameter Item Standard Specification

Measurement Range 0 - 25 Vol.% O₂ (Full range coverage of gas combustion oxygen content)

Measurement Accuracy ±0.3% Vol

Resolution 0.01% Vol

T90 Response Time < 20s

Recovery Time < 30s

Operating Temperature Range 0 - +50℃ (Gas measurement condition)

Expected Service Life 24 months at normal temperature air environment (Approximately 12 - 18 months for frequent gas measurement)

Overall Size 40×30×30mm, Standard Plug-in Modular Packaging

Weight 38g

Output Characteristics Weak mV linear voltage signal, Built-in electrolyte and catalytic electrode, Oxygen permeable film reaction generates corresponding concentration current

Anti-interference Characteristics Slightly tolerant of CO, NO, NO₂ gas cross-interference, Instrument built-in algorithm compensation

III. Working Principle

It belongs to a Galvanic electrochemical oxygen sensor:

Oxygen passes through the breathable membrane into the electrolyte, and undergoes a reduction reaction at the catalytic cathode. The anode simultaneously oxidizes and releases electrons, and the magnitude of the current generated by the circuit is strictly linearly corresponding to the oxygen concentration; The instrument collects mV signals and converts them into oxygen content, which is used for boiler combustion efficiency calculation (excess air coefficient λ).

IV. Core Application Scenarios

1. Industrial Boiler / Thermal Gas Detection (Core Scenario)

Gas boiler, coal-fired boiler, fuel-fired hot water boiler combustion gas oxygen content detection;

Calculate the combustion excess air coefficient by oxygen concentration, adjust the air door to reduce energy consumption and reduce NOx emissions;

Power plants, heating stations, heat treatment kilns, etc. Environmental pollution monitoring.

2. Environmental Exhaust Gas Detection Equipment Accessories

Industrial exhaust gas, incinerator, waste incineration plant exhaust gas component analysis;

Special replacement parts for Testo350 analyzer of third-party environmental testing institutions;

Oxygen concentration comparison of exhaust gas treatment equipment inlet and outlet, to determine the treatment condition.

Specifications: