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倍加福KFD2-VR2-Ex1.50m

?1通道隔離屏障

?24v直流電源(電源線)

?電壓輸入0 mV…±50 mV

?電壓輸出0 mV…±50 mV

?可選擇上/下標度燃盡檢測

應用

這種隔離屏障用于內在安全應用。它從熱電偶、測壓元件傳輸低壓信號，應變計，運算放大器和感應振蕩傳感器位于危險區域到安全區域。將端子4和端子5的輸入電壓傳遞到7號和8號航站樓。終端4和8是一樣的極性。

輸入、輸出和電源是電偶隔離的從對方。高檔或低檔斷鉛監控可以通過位于前端的開關進行選擇設備面板。

注:本機開機后需要三分鐘才能開機達到技術數據中引用的精度。

General specifications
Signal type Analog input
Supply
Connection Power Rail or terminals 14+, 15-
Rated voltage 15 ... 30 V DC
Ripple within the supply tolerance
Rated current ≤ 10 mA
Power loss/power consumption 0.3 W max.
Input
Connection terminals 4+, 5-
Input resistance ≥ 20 MΩ
Transmission range 0 ... ± 50 mV
Offset voltage/current ≤ 5 μV / ≤ 5 nA
Lead monitoring 100 nA
Output
Connection terminals 7+, 8-
Load accuracy figures for infinite load impedance, additional 0.03 % of span for a load resistance of 10 kΩ
Voltage 0 ... ± 50 mV
Output resistance ≤ 3 Ω
Line fault detection breakage: +100 mV (upscale), -100 mV (downscale)
Transfer characteristics
Deviation
After calibration at 293 K (20 °C): ± 3 μV up to ± 10 mV/± 0.03 % of the span up to +50 mV/± 0.05 % of the span up to -50 mV
Influence of ambient temperature ± 1 μV/K (typical ± 0.25 μV/K)
Absolute < 0.25 K at 30 V voltage supply
Bandwidth DC to 350 Hz (-3 dB)
Rise time ≤ 1 ms
Electrical isolation
Output/power supply basic insulation acc. to EN 50178, rated insulation voltage of 50 V AC
Directive conformity
Electromagnetic compatibility
Directive 89/336/EC EN 61326, EN 50081-2