DID Argon

DID Argon Gas Chromatograph

Analysis of H2, O2, N2, CH4, CO, CO2 in Argon.

General

The DID Argon Gas Chromatograph has been designed to exploit the variations of high frequency discharge in Argon. The carrier gas (Argon) is passing through a detection chamber where it is submitted to a strong electromagnetic field fed between two electrodes by a high-frequency generator.

Principle

The DID Argon Gas Chromatograph has been designed to exploit the variations of high frequency discharge in Argon. The carrier gas (Argon) is passing through a detection chamber where it is submitted to a strong electromagnetic field fed between two electrodes by a high-frequency generator.

In these conditions, luminescence takes place. The characteristics of the luminescence are modified by any impurity present in the initial gas passing through the chamber.

The luminous intensity of the discharge particularly gives, under well defined detector working conditions, a stable, continuous and linear function of gas composition for each impurity.

The luminous intensity of the discharge is measured by means of a photoreceptive cell which is part of the bridge, the unbalanced voltage of which becomes, after amplification, the output signal of the instrument.

Some Global References

Company Type of analyser Model Measurements
Air Products (Czech) Argon DID O2, N2, CH4
AGA (Finland) Argon DID H2, O2, N2, CH4, CO
Linde (Italy) Argon DID H2, O2, N2, CH4
Air Liquide (Angola) Argon/Carbon Dioxide DID H2, O2, N2
Linde (Germany) Argon DID H2, O2, N2, CH4, CO2

Technical specifications

AccuracyRange and application dependent
Drift<1 % over 24 hours
Temperature drift<1 % per degree
Operating temperatureAround 20°C without wide variations of temperature
Sampling gasArgon
Sample gas connection1/8’’ Swagelok SS
Sample flow rateApproximately 3 to 5 l/h
Sample pressureAtmospheric pressure
Carrier gasArgon
Carrier gas connection1/8’’ Swagelok SS
Carrier gas pressure7 bar
Carrier gas flow rate4 l/h
Recommended qualityminimum 6.0
Power supply220 Vac, 50-60 Hz
Power consumption500 VA
4-20 mA outputEight configurable outputs
depending on the application
RJ-45 connectionComputerised system maintenance
Output relays
(SPST 2 amperes / 250 Vac)
1 Analyser Failure Alarm contact
1 Alarm High contact
1 Alarm High High contact

Dimensions & chromatogram

DID Argon Gas Chromatograph Dimensions - Orthodyne

(Dimensions can differ regarding the application)

DID Argon Gas Chromatograph Chromatogram - Orthodyne

Measurement capabilities

Argon
H2< 0.05 ppm
O2< 0.1 ppm
N2< 0.1 ppm
CH4< 0.05 ppm
CO< 2 ppm
CO2< 0.8 ppm

Features

0.05 ppm resolution guaranteed
User-friendly interface
Adjustable alarm and oven settings
Fast response time
Possibility of auto-calibration programming
CE marked
Chromdyne software

Applications

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Contact

    Brochure

    DID Argon Gas Chromatograph - Brochure

    DID Argon