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Monitoring Air Compressor Runtime and Current

CAS DataLoggers Helps an Installer Achieve Cost Savings

Compressed air is a commonly used power source by manufacturers worldwide. As manufacturing capacity expands, compressor capacities also need to increase to meet the greater demand. Therefore it’s important to select a compressor with the correct capacity –if a compressor is too large for the job, it will only operate occasionally and draw a lot of power even while idling. A company specializing in compressor installation contacted CAS DataLoggers looking for a small but powerful data acquisition unit that field personnel could use to measure the runtime and current consumption on a wide range of their compressor models. This system also needed to be easy to use so that the company’s field engineer wouldn’t have to spend long hours learning how to program it.

CAS DataLoggers supplied the business with a dataTaker DT80 Intelligent Universal Input Data Logger which their field engineer connected to a panel mount display. He then placed a current clamp around the compressor’s supply, allowing him to monitor the datalogger’s built-in display while the compressor is operating in the loaded and idle states. Now whenever needed, the field engineer is able to adjust sensitivity levels from the panel mounted display and once set, the threshold values can be fixed to prevent anyone tampering with the test.

The DT80 data logger features universal analog inputs, digital channels, high-speed counter inputs, phase encoder inputs and programmable serial sensor channels for connection to most sensor types. This application flexibility enables both current and runtime to be logged and archived on the logger’s 10 million data point memory.

The dataTaker data logger is now left onsite to automatically record the current levels and the ON time to OFF times. The logger’s USB memory stick and Ethernet ports, and RS232 with modem support lets the user connect to the datalogger locally, remotely or online. The DT80 can also overwrite or stop logging when the memory is filled. Users can also send the data via FTP for easy downloads and program transfers. Meanwhile remote access to logged data, configuration and diagnostics can be done via the DT80’s built-in web and FTP server. In this industrial environment dataTaker’s rugged design and construction offer reliable low-power operation.

FREE dEX software is included with all dataTaker loggers, which uses an integrated graphical interface. Using dEX, the user can configure the data logger, use mimics to view real-time data, generate charts and tables, and view historical data for analysis. This way, the engineer totalizes the runtime and current data collected over a week of recording, and at the end of the test period the data is used in an energy survey to determine if the compressor is the correct size according to its use.

The installers benefited from having a single system able to monitor compressor runtime and current levels, saving them the expense of buying multiple loggers each with their own software. Now the engineer can test all the air compressor units 1 or 2 at a time before installation. CAS DataLoggers also provided free tech support to help the field engineer program the dataTaker and use its totalizing capability to derive runtimes and current levels. Additionally, the logger can be connected to channel expansion modules to make it expandable to 100 inputs in case the scale of this testing application keeps increasing.