Practical Instrument Electronics 850 - Manual (Page 41)

Page 39
Pr
eliminar
y
RTD, OHMS and Continuity Read
Resistance Ranges
0.00 to 401.00, 0.0 to 4010.0 Ohms
Accuracy ±(0.025% of Reading + 0.075 Ohms)
Excitation Current 1.0 mA to 401 Ohms, 0.5 mA to 4010
Ohms (nominal)
Continuity 0.0 to 401.0 Ohms; Beeps from 0.0 to
100.0 Ohms
RTD and OHMS Source
3 Wire & 4 Wire
Accuracy
From 1 to 10.2 mA
External Excitation Current
Below 1 mA of External
Excitation Current
2 Wire Accuracy
±(0.025% of Full Scale + 0.075 Ohms)
±(0.025% of Full Scale+0.075 Ohms +
Add 0.1 Ohm to specifications listed above
Resistance Ranges 0.0 to 401.00 to 4010.0 Ohms
Allowable Excitation
Current Range
<401 Ohms: 10.2 mA max; steady or
pulsed/intermittent
401 to 4010 Ohms: 1 mA max; steady or
pulsed/intermittent
Pulsed Excitation
Current Compatibility
DC to 0.01 second pulse width
0.025 mV
mA Excitation Current
)
Specifications