Data Logging 101
Do you need a way to capture important information such as temperature, pressure or voltage but don’t know how to get started? The Application Engineers at CAS DataLoggers have put together this brief overview to help guide you through the basics of data loggers and how they can simplify data collection for your organization.
What is a Data Logger?
A data logger, or datalogger, is an electronic device designed to measure and store data values, often independently of a PC. Nowadays most data loggers are compact, and relatively inexpensive. Dataloggers may be single input devices or may accept inputs from multiple types of sensors. Some loggers have built-in sensors and others have connections for external sensors. Data loggers have internal memory, internal clocks for time/date stamps, and may have an LCD display. A datalogger typically has an internal battery and records at a once per second or slower sample rate with internal memory for thousands or millions of readings.
A simple temperature and humidity data logger may be located at the point of interest for the measurement and retrieved at a later date to unload the data using a USB connection. A more sophisticated datalogger may have Ethernet, WiFi or even a cellular modem which allows for real-time monitoring and alerting for out of tolerance (alarm) conditions. This feature will let you react to the data you are recording instead of just collecting or logging the data. With network connected dataloggers, fully automated data transfer to network drives provide labor savings and convenience.
Many data loggers also support alarming capabilities to alert you whenever their user-set limits are exceeded. Data loggers are much more reliable and accurate than manual measurements and free up labor for other duties.
Advantages of a Data Logger:
Data loggers provide several advantages in reliability, accuracy and cost over manual measurements:
Manual Measurements Data Loggers
Personnel often forget to check or write down Automatic data collection
Human error in reading or recording Accurate readings
Paper records are easy to lose Electronic record
Data from paper record is difficult to analyze
Software makes it easy to view and analyze data
No way to set alarm for out of tolerance values
Alarm notification for out of tolerance values
Being more reliable and accurate than manual measurements, data loggers are useful for saving personnel the time otherwise spent taking down every measurement on paper. Whether you have a short- or long-term problem to solve, data loggers give you an automated solution for both monitoring and recording information.
As mentioned before, data loggers can even transmit alarms via email, text message or landline phone calls! This feature is important if you need to be alerted on a business-critical piece of equipment or process (assembly line, boiler tank, etc.). This can help you to avoid a potentially-disastrous process delay or shut down!
Data loggers can also operate ‘standalone,’ i.e. by themselves without human interaction, so they make a great solution for businesses and healthcare centers. Running on battery power, they can be used over long periods of time in many different applications.
Why Use a Data Logger?
A typical application for a datalogger is to record and monitor the temperature of a specific product or environment, like a vaccine storage refrigerator. The data logger will operate 24/7 including the weekend or outside of work hours when no person is available for the task. Data loggers are also used for more complex tasks such as recording multiple sensor data from machines for diagnostic purposes or to identify areas for energy savings.
Another major reason to use a data logger is to comply with regulatory agency requirements, whether it’s the FDA’s FSMA, HACCP for best practices, or another mandate. Data loggers document product temperature data for use in electronic documentation, proving to inspectors and auditors that your product and/or environment was kept within safe parameters.
What Do You Need to Measure?
Now ask yourself, “What type of data do I need to measure?”
Most commonly, the answer is temperature, but what if you need to also log humidity, or what if you need to log both temperature and carbon dioxide levels? Fortunately, there are a wide variety of devices on the market with internal or external sensors to measure the data you need.
While some data logger models are designed to log just one measurement value such as temperature, there are models recording two, three or more types of data. For example, at CAS DataLoggers we offer data loggers for the following types of signal inputs: Temperature, Relative Humidity, Voltage/Current, Pressure, Pulse Count/Event/State, Frequency, Serial communications, and more.
Easy Data Retrieval:
Typically, data loggers save their measurements to a memory card or other internal memory for convenient retrieval. More advanced models can also transfer the data automatically over your choice of communications. These include but are not limited to:
• Cellular Modem
How Do I Set Alarms?
hnology gives you several choices of how you’d prefer to receive alarms.
For example, alarm notification can consist of anything from bright LED indicators and loud audible alerts to data loggers with external alarm outputs for connection to sirens, horns, etc. More advanced models can automatically send you an email or text alarm to your smartphone or tablet, ensuring that you’re always notified of critical changes in your product or process.
Alarm setup and other configuration details are handled using the data logger’s software.
So…How Technical Do I Need to Be?
Good news—most data loggers are easy to use!
Very simple loggers such as shipping temperature loggers come preprogrammed; simply push a button or remove a pull tape to start logging. Other data loggers that offer changeable settings typically use Windows-based software to handle setup and configuration. Simply connect your data logger to a PC, follow the simple configuration wizard, and pick your recording rate and start time—all this normally just takes a few mouse clicks.
Being designed for simple operation, many compact data loggers require minimal to no maintenance or IT department involvement. That makes them ideal for use in nearly every industry and application.
The Data Logger Experts:
When searching online for the right data logger, you want to be confident that the device itself can perform the functions you need for your particular application. It is important to work with a vendor that knows the right questions to ask to make sure that the product you end up with fits your needs.
This includes (but is not limited to) the right number of channels/inputs to cover all your monitoring points, communication options, and software features. For example, if you need to chart or trend data for a future presentation, make sure you specify this when speaking with a solutions provider.
You’ll find lots of data logger manufacturers and distributors online, so make sure you consult with an experienced distributor. While data loggers are easy to use, you won’t get stuck if there’s a free technical support number you can call if you run into a problem, especially if you’re a first-time user.
To browse our extensive Data Logger inventory, or to find the ideal solution for your application-specific needs, contact a CAS DataLoggers Application Specialist at (800) 956-4437 or visit our website at www.DataLoggerInc.com.
Computer Aided Solutions, LLC. dba CAS DataLoggers is a distributor of data loggers, paperless recorders and data acquisition equipment.
We have the industry’s most complete selection of data logging equipment, with hundreds of different models from more than 18 manufacturers. With data loggers from 1 to 300 channels we can record temperature, humidity, force/strain, pressure, flow, voltage, current, resistance, vibration and other digital signals, in connection with serial (RS-232/RS-485), CAN/OBD or SDI-12 devices. We sell directly to end users and also work through a network of distributors and resellers throughout the United States, Canada, Central and South America.
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Chesterland, OH 44026
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