Campbell CR6 Series, Руководство оператора

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Section 6. Specifications
102
Programmable Terminals — Analog Function: Input
Terminal Label

============
Function

C1 C2 C3 C4 U1 U2 U3 U4 U5 U6 U7 U8 U9 U10 U11 U12
Period average
PeriodAvg()
           
VSPECT static
vibrating wire
VibratingWire()
     
Vibrating wire with
thermstor
VibratingWire()
  
Thermistor
Thermistor()
     
1
Each odd-numbered channel is differential input high and the following even-numbered channel is differential low.
2
Channel counts for resistance measurements vary because of differing input terminal needs. At least one terminal is used for
excitation. See Resistance Measurements — Details
(p. 406).
6.1.1.1 Basic Voltage Measurements — Specifications
One channel at a time in numeric succession, the CR6 measures voltage using an
A-to-D converter with 24 effective bits of resolution. You can mix differential and
single-ended channels.
Use
Differential: Best overall measurement; important
to use when voltages ≤ 200 mV, or
when ground currents are present.
Six differential pairs maximum.
Single-ended:
Preferred when more input capacity
required; slightly-lower quality than
differential. Twelve single-ended
inputs maximum.
Range:
See
TABLE: Analog Voltage Range
and Resolution — Differential
Measurement
(p. 103).
Accuracy
1
0 to 40 °C: ±(0.04% of measu offset)
–40 to 70 °C:
±(0.06% of measu offset)
–55 to 85 °C: ±(0.08% of measu offset)
Offset: See TABLE: Analog Voltage
Measurement Accuracy Offsets
(p. 103).