Practical Instrument Electronics 850 - Manual (Page 39)

Page 37
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Read mA
Ranges and Resolution 0.000 to 24.000 mA or -25.00 to 125.00%
of 4-20 mA, 0.000 to 52.000 mA or -25.00
to 105.00% of 10-50 mA
Accuracy ≤ ± (0.02 % of Reading + 0.003 mA)
Voltage burden ≤ 2V at 24 mA or 52 mA.
Overload/Current
limit protection
25 mA nominal
Source mA / Power & Measure Two Wire Transmitters
Ranges and Resolution
Same as Read mA
Accuracy ≤ ± (0.02 % of Reading + 0.003 mA)
Loop compliance voltage ≥ 24 DCV @ 20 mA, ≥ 40 DCV @ 52 mA
Loop drive capability
1200 Ω at 20 mA for 15 hours nominal;
800 Ω at 50 mA for ## hours nominal
Subtract 250 Ω with Hart Resistor
enabled (4-20 only)
mA 2-Wire Transmitter Simulation
Accuracy
Same as Source/Power & Measure
Voltage burden ≤ 2V at 20 mA or 52 mA
Overload/Current limit 24 mA nominal in 20 mA range, 53 mA
nominal in 50 mA range
Loop voltage limits 2 to 60 VDC (fuse-less protected)
Specifications
DC Voltage Read
Range and Resolution
±99.999 mV, ±999.99mV, 0 to 10.250 V, 0.00
to 60.00 V DC
Accuracy ≤ ± (0.02 % of Reading + 0.01% Full Scale)
Input resistance ≥ 1 MΩ