Advantages and features:

Small size, concise layout, sturdy and durable, high cost-effectiveness.

It is the first data acquisition sensor produced by Campbell Scientific that can measure 4 to 20 milliamps on its own. It almost includes all the functions of CR1000.

The processor of CR300 runs faster than the processors of CR200X and CR1000.

24 bit analog-to-digital conversion with incredible analog measurement accuracy.

The USB port simplifies the setup process and facilitates connection with a computer.

● Comply with Modbus, PakBus， Communication protocol with DNP3.

Support email services that require SMTPS (TLS encrypted SMTP) protocol.

Can be programmed using CRBasic or SCWin, fully compatible with the PakBus communication protocol.

The operating system of CR300 is similar to that of CR1000.

All terminals have electrostatic discharge and surge protection functions.

General technical indicators:

■CPU: ARM Cortex M4 processor, running speed: 144MHz

■Memory: 10MB flash memory is used for data storage, 5MB flash memory is used for CPU drivers/programs, and 2MB flash memory is used for operating systems

■Clock accuracy: ± 1 minute per month

■Micro B-type USB interface: Directly connected to a computer (limited power available during configuration parameters), USB 2.0 full speed standard, 12Mbps

■Battery terminal pair (- BAT+)： 12V regulated power supply or 12V valve regulated rechargeable lead-acid battery (UPS mode)

■Charging terminal pair (- CHG+)16 to 32V DC converter, 12V or 24V solar panel

■1 switch 12V power supply terminal (SW12V)Power supply for sensors or communication devices, 500 mA @ 20℃

■Two voltage excitation channels or 0 to 5V continuous analog output (VX1, VX2)Used for resistance bridge measurement or supplying power to sensors

■6 versatile analog input channels (SE1-SE6)

Simulation function (SE1-SE6)

✹Analog input:6 single ended or 3 pairs of differential inputs, dual range of -100 to+2500mV and ± 34mV, 24 bit analog-to-digital conversion

4 to 20mA or 0 to 20mA input (only SE1, SE2)

Digital I/O function (SE1-SE4), 5V output or 3.3V logic level

✹ High frequency square wave counting

✹ Pulse width modulation

Interrupt and timer inputs

✹ Periodic average measurement (up to 200kHz, depending on amplitude)

nTwo pulse counting channels (P_SW, P_LL)

o P_SW

✹ Switching pulse (150Hz)

✹High-frequency square wave（1MHz）

O P_LL low-voltage AC pulse

n2 control channels (C1, C2)：The C terminal can be configured with digital functions through software:

Digital I/O function, including 5V output or 3.3V logic potential:

✹SDI-12

✹ General state or control

5V or 3.3V voltage source: 10mA@3.5V

✹ Pulse width modulation

Interrupt and timer inputs

✹ Serial asynchronous communication,

✹ Send/receive paired terminals

✹ High frequency square wave counting (maximum 3kHz)

nThe best simulation accuracy：± (0.04% ± 3 μ V of reading), 0 ° to 40 ° C

nThe best effective resolution：23 nV (± 34 mV range, differential measurement, with reverse input option and 50/60 Hz fN1 notch frequency noise suppression option)

nworking temperature：-40 ° to+70 ° C

nweight：242 g (8.5 oz)

nsize：14.0 x 7.6 x 5.1 cm (5.5 x 3.0 x 2.0 in)

CR300 Data Collector. pdf