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基于热导原理的在线式氢气分析仪,长期稳定应用于钢铁、冶金行业,化学工业以及其他需要分析氢气浓度的领域。该系统反应速度快,低于2秒钟,并且能保持反应速度的稳定。分析系统具有多种版本可选,有机柜式、现场安装的机箱系统,以及具有1区和2区EX防爆等级的成套系统提供。可多量程同时测量并自动切换。
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据显示, 信号输入和输出

 

用户界面

LCD 显示 40 x 16 + 图条

状态文字显示和状态输出

语言:英语/德语

信号输出

2个可设定的独立电隔离输出: RLoad = 600Ω max.

输出值: 0-20 mA, 4-20mA, 4-20mA (依据NAMUR NE43)

和 测试信号值(0mA, 4mA, 10mA, 12mA & 20 mA)

数字输出

(仪器状态)

触电输出仪器状态 (28V max.; 350mA max.) :

故障   |   维护需求  |   维护

模拟输入(optional)

3 电隔离输入 0 – 20mA    4 – 20mA (Ri = 50Ω)

数字 I/O 2 (optional)

数字输入: 8 数字输入 (6 – 24VDC; 10mA max.)

              遥控量程切换

              外部校准

              切换第二个量程的干扰补偿

              指定用户定义的输入到数字输出

 

数字输出: 7数字输出 (浮动触点 28V max.; 350mA max.)

              报警值 (每量程一个报警值)

 

Analytical-/ Operational Data

Measuring principle

Difference in thermal conductivity (∆λ) of various gases

Measured quantity

Concentration of a particular gas component in binary and quasi-binary mixtures.

In many applications involving multi-component gases the inherent non-selectivity of the thermal conductivity principle can be minimized using interference correction techniques.

Physical interference reduction is sometimes possible with certain applications due to the wide temperature range of the CONTHOS' TC-detector.

Measuring ranges

Up to 3 independently configurable, switchable ranges. The reference response of each range is factory linearized (4th-degree polynomial).

Suppressed output ranges within the corresponding reference range can be easily configured.

Range switching is accomplished manually, automatically and/or externally (via optional digital inputs).

lowest range: 0 - 0.5% H2 in N2   or   99.5-100% H2 in N2    (or equivalent ∆λ) largest range: 0 - 100% H2

Response time τ90

approx. 2 sec. (dependent upon gas flow and analyzer configuration) (integration time configurable)

Precision

≤ 0.5% F.S.O. (typically better than ± 0.2%  F.S.O.)

Accuracy

better than ± 0.5%  F.S.O. (typically better than ± 0.3%  F.S.O.)

Calibration

Manual: 2-point (offset/span) calibration  Option: automatic or semi-automatic calibration in conjunction with the optional digital I/O-board or RS-485

Interference correction

3 correction channels for static and/or dynamic interference correction (dynamic correc tion only in conjunction with the optional analog inputs or RS-485)

One of the prerequisites for dynamic interference correction is the availability of a selective signal, proportional to the particular gas component to be corrected for. The processing of analyzer ranges with a suppressed zero range is not possible.



- 钢铁、冶金

- 化学工业

- 石油

- 其他









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