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Product details
summary
CR300 is a multi-purpose, compact, and low-cost measurement and control data collector, belonging to the entry-level data collector. It has a rich instruction set and is compatible with most hydrological, meteorological, environmental, and industrial sensors. It can collect data through various network methods and transmit it according to communication protocols that are more suitable for users. CR300 can also perform local or remote automation operations, control, and M2M communication, suitable for small systems that require long-term monitoring and remote monitoring.
Features and advantages
Built in charging controller (using solar panels or AC/DC converters), which can charge the battery locally
Low power consumption, saving power
Measure various analog voltage or current sensors
Measure various pulse outputs or serial/digital sensors
Remote monitoring through connecting various communication devices
Communicate using Pakbus, Modbus, DNP3, and other standard protocols
Sending encrypted/secure email messages and alerts
Campbell Quality Surge and Static Protection
Using USB ports to simplify PC connection setup
parameter
CPU：ARM Cortex M4, Operating frequency 144MHz
Memory: 10MB data storage, 5MB CPU drive/program, 2MB operating system
Clock accuracy: ± 1 minute/month
USB microB interface: direct connection to computer (current limited during configuration) USB 2.0 12Mbps
RS232 interface: Connect RS232 communication devices or serial sensors
Battery terminal pair (- BAT+): connected to 12V power input or used for UPS mode to charge the battery
Charging terminal pair (- CHG+): Connect 16-32V DC power converter or 12V or 24V solar panel (10W)
SW12V terminal: Controllable 12V output, providing power to sensors or communication devices, 500mA@20 ℃
VX1, VX2 terminals: sensor excitation or 0-5V continuous output, resistance bridge measurement or sensor power supply
6 multi-purpose analog input terminals (SE1-SE6)
Analog function (SE1-SE6)
Analog input: 6 single ended or 3 differential inputs, range -100~+2500mV (± 34mV), 24 bit ADC
4-20mA or 0-20mA input (only supported by SE1 and SE2)
The digital I/O function (SE1-SE4) includes a 3.3V logic level for:
High frequency counting (35KHZ)
Pulse width modulation
Interrupt and timer inputs
Periodic average measurement (20KHZ, depending on amplitude)
Two pulse counting terminals (P_SW, P_LL)
P_SW
Switch closing pulse (150Hz)
High frequency counting (35KHz)
P_LL
Low frequency AC (20KHz)
High frequency counting (20KHz)
2 control terminal terminals (C1/C2): Terminal C can be set to digital function through software
The digital I/O function includes 5V output or 3.3.V logic level, used for
SDI-12
High frequency counting (3KHz)
Switch closed (150Hz)
General Status/Control
Power supply 5V, 3.3V: 10mA@3.5v
interrupt
Serial port synchronous communication Tx/Rx group
Specifications
Analog voltage accuracy: The accuracy specification does not include sensor or measurement noise.
± (0.04% of measured value+offset) at 0 ° C to 40 ° C
± (measured 0.1%+offset) at -40 ° C to+70 ° C
Optimal effective resolution: 23 nV (range ± 34 mV, differential inversion measurement 50/60 Hz fN1)
Working temperature range:- 40° to +70°C
Weight: 242 g (8.5 oz)
Volume: 14.0 x 7.6 x 5.1 cm (5.5 x 3.0 x 2.0 in)
Terminal function
(Each terminal can only use one of its functions)
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