ELCA-200 Series Trace Oxygen Analyzer

Non-Consumable Coulometric Trace O₂

The ELCA-200 series online trace oxygen analyzer is a high-precision instrument based on non-consumable coulometric technology. Specifically engineered for industrial gas purity monitoring and quality control, it is widely deployed in critical processes such as air separation units (ASUs), argon recovery, and helium purification.

Key Features

01

Non-consumable electrochemical sensor: operating on a coulometer-like principle by detecting the current generated as sample gas is consumed. Unlike traditional galvanic sensors, the electrolyte and electrodes do not undergo permanent chemical depletion, eliminating frequent sensor body replacement for superior long-term stability.

02

Ideal for pure gas stream measurement: high-stability coulometric technology responds rapidly to fluctuations in sample conditions or flow rates, delivering a highly stable signal for low-level oxygen across a wide dynamic range from high-purity applications down to sub-ppm levels.

03

Suitable for PPB-level detection: designed for ultra-high purity (UHP) gas applications with exceptional sensitivity and a detection limit below 5 ppbv; VCR-compatible fittings prevent atmospheric leakage for the highest reliability in critical trace oxygen measurements.

Measurement Ranges

ppbv level (L)
0–500 ppbv / 5 ppmv / 50 ppm
ppmv level (A/B/C/D)
From 0–1 / 10 / 100 ppmv up to 0–10000 ppmv
% level (A/B/C)
0–5 % / 0–10 % / 0–25 %

Technical Specifications

Sample Flow Rate
0.5 – 1.5 L/min
Ambient Temperature
0 – 49 ℃
Power
<90 W
Power Supply
220 VAC @50Hz

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