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用戶界面

LCD 顯示 40 字x 16 行 + 圖條

狀態文字顯示和狀態輸出

語言:英語/德語

信號輸出

2個可設定的獨立電隔離輸出: RLoad = 600Ω max.

輸出值: 0-20 mA, 4-20mA, 4-20mA (依據NAMUR NE43)

和 測試信號值(0mA, 4mA, 10mA, 12mA & 20 mA)

數字輸出

(儀器狀態)

觸電輸出儀器狀態 (28V max.; 350mA max.) :

故障   |   維護需求  |   維護

模擬輸入(optional)

3 電隔離輸入 0 – 20mA  或  4 – 20mA (Ri = 50Ω)

數字 I/O 2 (optional)

數字輸入: 8 數字輸入 (6 – 24VDC; 10mA max.)

              • 遙控量程切換

              • 外部校準

              •切換第二個量程的干擾補償

              • 指定用戶定義的輸入到數字輸出

數字輸出: 7數字輸出 (浮動觸點 28V max.; 350mA max.)

              • 報警值 (每量程一個報警值)

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.