Specifications

Section 3. Overview
3-2
The CR1000 measures analog voltage and pulse signals, representing the
magnitudes numerically. Numeric values are scaled to the unit of measure
such as millivolts and pulses, or in user specified engineering units such as
wind direction and wind speed. Measurements can be processed through
calculations or statistical operations and stored in memory awaiting transfer to
a PC via external storage or telecommunications.
The CR1000 has the option of evaluating programmed instructions
sequentially, or in pipeline mode, wherein the CR1000 decides the order of
instruction execution.
3.1.1 Sensor Support
Read more! See Section 4 Sensor Support.
The following sensor types are supported by the CR1000 datalogger:
Analog voltage
Analog current (with a shunt resistor)
Thermocouples
Resistive bridges
Pulse output
Period output
Frequency output
Serial smart sensors
SDI-12 sensors
A library of sensor manuals and application notes are available at
www.campbellsci.com to assist in measuring many sensor types. Consult with
a Campbell Scientific applications engineer for assistance in measuring
unfamiliar sensors.
3.1.2 Input / Output Interface: The Wiring Panel
The wiring panel of the CR1000 is the interface to all CR1000 functions. Most
CR1000 functions are best introduced by reviewing features of the CR1000
wiring panel. FIGURE 2.1-1 illustrates the wiring panel and some CR1000
fu
nctions accessed through it.
Read more! Expansion accessories increase the input / output capabilities
of the wiring panel. Read Section 5 Measurement and Control Peripherals
for more information.
3.1.2.1 Measurement Inputs
Measurements require a physical connection with a sensor at an input channel
and CRBASIC programming to instruct the CR1000 how to make, process, and
store the measurement. The CR1000 wiring panel has the following input
channels:
Analog Voltage: 16 channels (Diff 1 - 8 / SE 1 - 16) configurable as 8
differential or 16 single-ended inputs.
• Input voltage range: -5000 mV to +5000 mV.
• Measurement resolution: 0.67 μV to 1333 μV