Data Logger Facts
How to choose a Data Logger? The first step is to determine what parameter it is that you wish to log. Many data loggers contain internal sensors that will log commonly measured parameters such as: temperature, humidity, pressure, water level, water temperature, Air Quality/CO2, voltage, current, energy (kWh).
What is a Data Logger?
A data logger is an electronic device, often with external probes or sensors and are most commonly battery-operated. All data loggers, whether they are USB data loggers or wireless, comprise a recording system, which is connected to one or more sensors. The sensor or sensors may be housed inside the data logger’s case, or they may be attached to the logger’s sensor ports via a cable. The recording system samples the sensor at intervals and stores the resulting data.
Data loggers are valuable tools for anyone who wants to continuously monitor conditions without having to be on site.
Because of the long battery life characteristic of many portable data loggers, they can be deployed for long periods of time, meaning less time spent traveling to and from the logger to download data. For remotely-placed loggers, or in situations where many loggers are used, that can be a huge savings in time and money.
Advantages of Data Loggers
Ease of use
It can be a mere 15 minutes from opening the box to deployment of a data logger; for some models, simply connect the logger to a computer, use the data logger’s software to configure the sampling frequency and start/stop times, and you’re ready to go. Bluetooth Low Energy (BLE) enabled loggers don’t even require a computer, only a mobile device and app.
Downloading data is simple as well, and it can be easily analyzed, graphed, and formatted for presentation or export to other applications.
Once configured and deployed, you can rely on a battery-powered data logger to gather the information you need, for as long as you need. No human error, schedule conflict, inclement weather, bad handwriting, or data entry errors will affect your data collection. And whether indoors or out, data loggers are rugged instruments designed to withstand a wide range of
environmental conditions, including salt water, refrigeration, strong winds, and constant sunlight.
Collection of data is at the core of these devices, and their purpose is to provide objective, time-stamped proof of conditions over time, which can be used to test theories, confirm operations, provide a record for supervisors or regulatory agencies, and supply information to decision-makers.
Datalogger Communication Options
There are many flavours of devices, but one of the most popular types is the wireless data logger. The term ‘wireless temperature logger’ refers to the device’s bluetooth/radio signal/WiFi/cellular internet connection.
With non-wireless loggers, data is collected manually from the logger after a chosen period of time has elapsed. The data is downloaded ito a PC via USB cable for analysis. In contrast, wireless loggers with cellular internet communications allow remote monitoring & uploading of data for analysis; saving the need for field visits.
Many customers choose dataloggers that allow wireless access to the data, so that they don't have to spend time physically checking the logger and downloading data. Plus, they can receive alerts via SMS text message to their phone, or by email. Web-based data logging systems enable remote, around-the-clock internet-based access to data via GSM cellular, Wi-Fi, or Ethernet communications. These systems can be configured with a variety of external plug-in sensors and transmit collected data to a secure web server for accessing the data.
Data loggers that utilize Bluetooth Low Energy (BLE) technology measure and transmit temperature and relative humidity data wirelessly to mobile devices over a 100-foot range.
Filter the loggers on our site using the 'Data Available By' tick boxes, for Bluetooth, Wireless, GSM etc.
Data Logger Sensor Options
In some cases the data logger will have multiple internal sensors that log different parameters simultaneously. The ability to log multiple parameters requires the data logger to have multiple ‘channels’. In this way, a data logger with four channels will enable four parameters to be logged simultaneously.
Data loggers that have one or more external channels can be used in conjunction with external sensors to measure and log a very wide range of parameters. The benefit of this is that you are able to customise a data logging system to suit your exact requirements.
No matter what you need to measure, understanding your measurement accuracy requirements is essential. For example, if you’re monitoring temperature in an office space, you may only require a temperature measurement accuracy of +/- 2 degrees; while monitoring conditions for research may require far greater accuracy, for example, accuracy in the order of 0.2C is typically required.
Accuracy specifications vary widely among different types of data loggers. When looking at the accuracy specifications for a given data logger, be sure to look for charts that indicate accuracy over an entire measurement range, not just a single value. The accuracy a data logger can attain at the high or low end of its range might be far dissimilar from the correctness at the mid point of its range. For this purpose, it is significant to find out if the logger’s accuracy description mentions a single point or the complete measurement range.
The accuracy a data logger can achieve at the high or low end of a given range may be far different from the accuracy at the middle of the range.
Why Tempcon is the Answer
Whether you require a single low-cost USB data logger or an IoT data logging and alert system - we can assist you. The team at Tempcon are the expert data logger consultants. Call us on +44 (0)1243 558270, or alternatively fill out our contact form.