Resistance Measurements - Specifications - Campbell CR300 Series Operator's Manual

CR300-Series Datalogger
7.2 Resistance Measurements – Specifications
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TABLE 7-2. Analog Voltage Measurement Accuracy Offsets
Differential
with Input
Range Reversal
(mV) (µV)
–100 to +2500 ±20
–34 to +34 ±6
TABLE 7-3. Analog Voltage Measurement Speed
Multiplexed
With Input
Reversal
f Time Rate
N1
(Hz) (ms) (Hz)
4000 2.9 345
400 14.6 68.5
50/60 103 9.71
1 Default settling time of 500 µs
2 Total analog voltage measurement speed = multiplexed
measurement time × number of repetitions + 0.8 ms
3 Refers to multiplexing circuitry internal to the CR300.
TABLE 7-4. Analog Voltage Measurement Input Resistance and Current
f Input Resistance
N1
(Hz) (GΩ)
4000 0.3
50/60 5
Four- and six-wire full-bridge and two-, three-, and four-wire half-bridge
measurements using voltage excitation.
Terminals:
Differential
without Input
Reversal
(µV)
±40
±14
1,2
3 Measurement
Without Input
Reversal
Time Rate
(ms) (Hz)
1.4 714
7.3 137
51.5 19.4
Input Current at 25 °C
(nA)
±13
±0.8
SE terminals 1-6
DIFF terminals 1H/1L - 3H/3L
Excitation terminals VX1-VX2
Single-Ended
(µV)
±60
±20