Practical-instrument-electronics 820 Manual do Utilizador descarregar pdf (Página 27)

Page 25

Read mA

Ranges and Resolution

0.00 to 24.00 mA or -25.0 to 125.0% of

4-20 mA

Accuracy ≤ ± (0.03 % of Full Scale)

Voltage burden ≤ 2V at 24 mA

Overload/Current

limit protection

25 mA nominal

Source mA / Power & Measure Two Wire Transmitters

Ranges and Resolution

0.00 to 24.00 mA or -25.0 to 125.0% of

4-20 mA

Accuracy ≤ ± (0.03 % of Full Scale)

Loop compliance voltage

≥ 24 DCV @ 20.00mA

Loop drive capability 1200 Ω at 20 mA for 15 hours nominal;

950 Ω with Hart Resistor enabled

mA 2-Wire Transmitter Simulation

Accuracy Same as Source/Power & Measure

Voltage burden ≤ 2V at 20 mA

Overload/Current limit

protection

24 mA nominal

Loop voltage limits 2 to 60 VDC (fuse-less protected from

reverse polarity connections)

Specifications

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