Accuracy (does not include sensor or measurement noise):
l
0 to 40 °C: ±(0.04% of measurement + offset)
l
–40 to 70 °C: ±(0.1% of measurement+ offset)
Voltage Measurement Accuracy Offsets:
Typical offset (µV RMS)
Range (mV)
Differential
with input reversal
Differential
without input reversal
Single-ended
–100 to +2500 ±20 ±40 ±60
–34 to +34 ±6 ±14 ±20
Measurement Settling Time: 10 µs to 50 ms; 500 µs default
Multiplexed Measurement Time:
These are not maximum speeds. Multiplexed denotes circuitry inside the data logger that
switches signals into the ADC.
Measurement time = (multiplexed measurement time + settling time) • reps +0.8 ms
Differential
with input reversal
Single-ended or differential
without input reversal
Example fN1
1
(Hz) Time
2
(ms) Time
2
(ms)
4000 2.9 1.4
400 14.6 7.3
50/60 103 51.5
1
Notch frequency (1/integration time).
2
Default settling time of 500 µs used.
See also Voltage measurements(p. 90).
24.5.2 Resistance measurement specifications
The data logger makes ratiometric-resistance measurements for four- and six-wire full-bridge
circuits and two-, three-, and four-wire half-bridge circuits using voltage excitation. Typically, at
least one terminal is configured for excitation output. Multiple sensors may be able to use a
common excitation terminal.
24. CR300 series specifications245
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