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Archigas TCD3000 Si Sensor – Hydrogen Gas Analyzer

Archigas TCD3000 Si Sensor – Hydrogen Gas Analyzer

The TCD3000 Si is a gas analyzer designed for fast and accurate hydrogen measurement in gas mixtures, particularly for applications located outside ATEX zones.

Based on thermal conductivity technology, it enables reliable analysis of near-binary mixtures, including gases with highly contrasting thermal conductivities, such as hydrogen and oxygen. This approach ensures excellent sensitivity, high measurement stability, and a response suited to the fast dynamics of industrial processes.

Compact and robust, the TCD3000 Si is particularly well suited for test benches, R&D environments, testing platforms, and controlled industrial processes. Its ability to operate under high pressure (up to 200 bar) and its very short response time make it a reliable solution for the characterization, validation, and monitoring of hydrogen systems.

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Technical Specifications


TCD3000 SiA and TCD3000 Si Specifications


SiA Dimensions with connectors; Weight

H : 96 mm ; Ø : 45 mm ; 740 g

Si Dimensions with connectors; Weight

H : 91 mm ; Ø : 45 mm ; 440 g

Gas connection

G 1/2" or NPT 1/2"

Power supply

24 ±25 % VDC, < 5 W

Analog output

4–20 mA loop-powered, RL ≤ 750 Ω

Serial interface

RS485, baud rate 38400 / 8 data bits

Ambient temperature range

-40 to +90 °C

Sample gas temperature

-40 to +90 °C / +125 °C

Response time

≤ 30 ms

T90 time

< 1 s

Warm-up time

< 1 minute

Sample gas pressure

0.9 to 200 bar (absolute)

Sample gas flow rate

0 to 10 m/s (higher flow rates on request)

Noise

< 10 ppm

Measured value drift

< 100 ppm per week

Repeatability

< 100 ppm

Temperature influence

< 50 ppm / 10 K

Influence of sample gas pressure at zero point

< 25 ppm / 10 hPa; approx. 1 MPa < 2 ppm / 10 hPa

Influence of sample gas pressure with span gas

< 100 ppm / 10 hPa; approx. 1 MPa < 10 ppm / 10 hPa

Influence of sample gas flow at zero point

< 25 ppm / 10 l/h

Influence of sample gas flow with span gas

< 100 ppm / 10 l/h

Technical Documentation

Find here the complete technical documentation related to Archigas sensors, made available to facilitate their integration, operation, and use within your industrial systems.


SiA User Instructions


Si Operating Instructions

Technical Questionnaire



Technical Specifications

3D Model