Extend your measurement channels
Multiplexers allow our dataloggers to measure more sensors. The number of analog inputs is increased by sequentially multiplexing sensor leads into "common" leads. The individual common...
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Provide power to external devices
Relays are devices that can provide power directly to external devices that have modest power requirements, such as the small fans used in our Bowen ratio systems. Alternatively, these relay drivers can...
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Expand your output and measurement capabilities
The SDMs are a group of addressable peripherals that expand the datalogger's output and measurement capabilities. The datalogger controls the SDM output device by storing a value in a memory location...
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Completion resistors that integrate with your wiring panel
These simple modules are small peripherals that provide completion resistors for resistive bridge measurements, voltage dividers, and precision current shunts. The modules attach directly to the datalogger's...
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Measure vibrating wire sensors
These interfaces allow our dataloggers to read vibrating wire sensors. Dataloggers that are compatible with our vibrating wire interfaces and vibrating wire sensors include our CR800, CR850, CR10X,...
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Specialized measurement and control peripherals
Measurement and Control Peripherals that don't quite fit into our other"subfamilies" are assembled here. The peripherals listed here interface with sensors that measure water, soil, or wind.
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About Measurement & Control Peripherals
This family of peripherals expands the already formidable measurement and control capabilities of Campbell dataloggers.
Measurement peripherals are situated between the datalogger and its sensors, while control peripherals are situated between the datalogger and external device(s) under datalogger control. Examples of measurement peripherals include vibrating wire interfaces, serial data interfaces, terminal input modules, and in most cases, multiplexers. Examples of control peripherals include relay drivers, some SDM peripherals, and occasionally, multiplexers. Some SDM devices can perform both measurement and control functions simultaneously.
As a group, these peripherals range from quite simple --- in the case of the precision resistor networks in our voltage dividers, to quite sophisticated --- in the case of SDM devices that have their own microprocessors and can perform measurement, control, and data processing functions independently of the connected datalogger.
In many cases, these devices increase the channel capacity of the dataloggers by allowing more sensors to be measured or more external devices to be controlled than is possible with the datalogger alone. Our AM16/32 multiplexer enables one differential analog input to measure up to 32 sensors.
In some instances, the capabilities of the peripheral can provide additional capabilities to those available in the datalogger. For example, the SDM-AO4 can provide continuous analog output capability that is unavailable in the CR10X.