Campbell CR6 - Thermistor Measurements Specifications; Current-Loop Measurement Specifications

11.5.5 Thermistor measurements specifications
6 U terminal pairs can be configured to measure two-wire thermistors directly using an on-board
5kΩ resistor to complete the bridge. The U terminal pair both excites and measures the
thermistor.
Terminals: U1 - U12
Input Resistance: 5 kΩ ±0.1%, 10 ppm/°C completion resistor
Measurement Type: Single-ended voltage
Range: ±5000 mV
Resolution: 0.001 Ω RMS
Accuracy: ±0.25% of reading
11.5.6 Current-loop measurement specifications
The data logger makes current-loop measurements by measuring across a current-sense resistor
associated with the RS-485 resistive ground terminal.
NOTE:
Resistance to ground input for non-isolated 0-20 mA and 4-20 mA current loop
measurements is available in CR6 dataloggers with serial numbers 7502 and greater.
Terminal: RG
Maximum Input Voltage: ±16 V
Resistance to Ground: 101 Ω
Current Measurement Shunt Resistance: 10 Ω
Maximum Current Measurement Range: ±80 mA
Absolute Maximum Current: ±160 mA
Resolution: ≤ 20 nA
Accuracy
l 0 to 40 °C: ±0.14% of reading
l -40 to 70 °C: ±0.26% of reading
See also Current-loop measurements (p. 66).
11. CR6 Specifications 220