Types of Data Loggers

Types of Data Loggers
Published On: October 14, 2022 Revised On: October 30, 2023

Data loggers are electronic devices that record data over a specific period, often via sensors that track various environmental parameters. These devices are especially relevant in the field of packaging. Packaging isn’t just about encasing a product; it’s about ensuring the product reaches its destination in the intended condition.

From temperature variations in a warehouse to potential exposure to light during transportation, numerous factors can affect the quality and safety of packaged goods. Data loggers offer a systematic way to monitor these conditions, providing insights critical for maintaining product integrity and optimising the packaging process. This article explores the different types of data loggers and their role in the packaging industry.

Principles of Data Loggers

Data loggers, at their most fundamental level, serve as digital record keepers. They capture, store, and sometimes transmit various environmental parameters, ensuring that real-world conditions can be reviewed and analysed. The process begins when a sensor within the data logger detects a specific environmental parameter, such as temperature, humidity, light, or vibration.

These sensors are often specialised and calibrated to measure their designated parameters accurately. Once the data is sensed, it is converted from an analogue signal to a digital one. This is typically done through an Analog-to-Digital Converter (ADC) within the data logger.

The digital data is then stored in the device’s memory. The capacity can vary, with some loggers storing thousands to millions of readings. Data can be retrieved from the logger in various ways – through direct connections like USB, wirelessly via Bluetooth or Wi-Fi, or even through cloud-based platforms. Some loggers also offer real-time data transmission.

Key Components and Functionality:

  • Sensors: These are the primary input devices responsible for detecting changes in environmental parameters. The type and number of sensors can vary based on the logger’s intended application.
  • Memory: The storage component where recorded data is kept. Memory types can range from volatile (RAM) to non-volatile (Flash memory).
  • Battery: Powering the device is crucial, especially for loggers meant for long-term monitoring. Batteries can be disposable or rechargeable, and their lifespan varies.
  • ADC (Analog-to-Digital Converter): This component converts the analogue signals from sensors into digital data, making it readable and storable.
  • Interface: This allows for data retrieval and device configuration. Common interfaces include USB ports, wireless modules (like Bluetooth or Wi-Fi), or proprietary connections.
  • Clock: A real-time clock ensures that each data point is stamped with an accurate timestamp, allowing for chronological tracking and analysis.
  • Display (in some models): A screen or display to provide immediate feedback or readings, useful in scenarios where quick data checks are necessary.

Types of Data Loggers

Data loggers monitor and preserve the quality of products. Their ability to measure various environmental parameters means each type has a niche, ensuring that the diverse conditions products might encounter are adequately monitored. By understanding the different types of data loggers and their specific applications in packaging, businesses can make informed decisions, ensuring the optimal safety and quality of their products.

Temperature and Humidity Data Loggers

Embedded with sophisticated sensors such as thermocouples or thermistors, they can precisely track temperatures in freezing cold storage or outdoor environments’ blazing heat. Organisations can respond to any critical changes due to temperature monitoring.

Certain products are also sensitive to humidity levels. For example, electronics can malfunction or get damaged in high humidity, while artwork can degrade. Maintaining a consistent humidity level in the packaging industry is essential to preserving the integrity of such sensitive items.

Temperature and humidity data loggers can record data at predetermined intervals and are used to measure temperature changes. The data is then stored in the inbuilt memory of these gadgets. Using the loggers, users can track and log changes in humidity and temperature over time. Software that can usually be downloaded for free is used to view the data in most circumstances.

The data logger software gives each data point a time and date stamp, which can be viewed as a graph, raw data file, or PDF report. There are various features to consider when looking for a suitable logger. Consider the measurement type, different ambient data combinations, measurement results repetition, the accuracy of results, battery life, and transmission path.

Vibration Data loggers

A vibration data logger is designed specifically to capture and measure environmental vibrations. These devices typically house internal memory, allowing them to function autonomously and record measurements without constant oversight. This vibration data is invaluable for businesses engaged in the transportation of goods.

With such tools, manufacturers can maintain comprehensive records from the initial dispatch to the final delivery. This not only bolsters quality control measures but also cultivates a proactive approach to potential transit challenges. By leveraging the insights from a vibration data logger, manufacturers can discern, anticipate, and mitigate the risks associated with shocks or vibrations during transit.

A benefit of the loggers is their role in averting prolonged downtime. Businesses can sustain operations seamlessly by monitoring machinery conditions and preemptively identifying potential faults. This proactive approach not only translates to monetary savings from preventing unexpected breakdowns but also optimises staff productivity by reallocating their focus to other essential tasks.

Operators can implement preemptive measures through regular vibration monitoring, ensuring the machinery remains secure. Addressing issues swiftly as they’re detected simplifies remedial processes. Moreover, preventive maintenance fortifies the safety of machinery and establishes a safer environment for all personnel involved. Undertaking meticulous vibration analysis of machinery presents manifold benefits, with a pronounced emphasis on prioritising worker safety.

Impact and Shock Data Loggers

The journey of a packaged product might undergo jolts, shocks, or vibrations, potentially harming the contents inside. Shock data loggers, equipped with accelerometers, are designed to document these disturbances. These devices are crucial in understanding how products fare during transit by recording the intensity and duration of such events. Fragile items like glassware or delicate electronics are especially vulnerable.

Additionally, when transporting heavy machinery or equipment, it’s crucial to ensure they’re not subjected to detrimental levels of shock, which might impair their functionality. Impact data loggers measure and record impact forces’ direction, amplitude, and duration. Coupled with GPS tracking, these devices allow businesses to pinpoint the exact location of handling discrepancies throughout the entire supply chain, ensuring optimal handling and transport conditions.

In reported losses or mishandling, the data from these loggers not only aids in reducing damage costs and expediting insurance claims but also curtails extraneous expenses. With their advanced and user-centric interfaces, these contemporary devices optimise shipping and transit operations, making them more cost-effective. Continuous monitoring and real-time data analysis empower users with the information they need. This informed decision-making streamlines operations and provides an advantage in transportation and logistics.

Features and Specifications

When selecting a data logger, carefully consider features and specifications. By matching them to specific needs and applications, users can ensure effective and efficient monitoring, safeguarding products and optimising processes.

Sampling Rate: The sampling rate of a data logger refers to how frequently it records data. It is usually measured in samples per second (Hz). A higher sampling rate means the logger captures data more regularly, providing a detailed record of fluctuations over a shorter period. This is especially vital in scenarios where swift changes in conditions, such as temperature or vibration spikes, must be tracked. However, it’s worth noting that a higher sampling rate can also fill up storage more quickly.

Storage Capacity: Storage capacity measures how much data the logger can retain before it needs to be downloaded or overwritten. Loggers with larger storage capacities are suitable for extended monitoring periods or environments with a high sampling rate. Some loggers also have expandable storage options, like SD card slots, for more extensive data collection.

Battery Life and Power Options: Battery life indicates how long a data logger can operate before recharging or replacing batteries. Some loggers might have a longer battery life suited for prolonged deployments, while others may require more frequent charging or battery swaps. Additionally, some data loggers have alternative power options, like solar charging or mains power connectivity, to ensure uninterrupted operation.

Connectivity and Retrieval: Several connectivity options exist for easy retrieval. Common methods include:

  • USB Connectivity: Direct connection to a computer or other devices for data download.
  • Wireless Connectivity: Utilising Wi-Fi, Bluetooth, or other wireless protocols for remote data access and retrieval.
  • Cloud Integration: Some advanced loggers can directly upload data to the cloud, allowing users to access information from anywhere with internet connectivity.
  • On-device Display: Some loggers have built-in screens to display real-time data, facilitating quick checks without downloading the data.

Choosing the Right Data Logger

Selecting the right data logger involves specific needs, the logger’s features, and the available budget. Prioritising what’s essential for a particular scenario ensures that the most suitable logger is chosen, offering optimal performance without excessive expenditure.

Duration: How long is the monitoring period? A logger with a substantial storage capacity and an extended battery life becomes essential if the monitoring extends over several weeks or months.

Environment: Where will the data logger be deployed? Consider the conditions it’ll face. In humid environments, a waterproof or humidity-resistant logger is crucial. Ensure that the logger operates within those ranges for extreme temperatures. A durable and shock-resistant logger becomes paramount in rugged or potentially rough environments.

Product Sensitivity: A logger with high accuracy and a fast sampling rate is recommended for products requiring precise conditions. A multi-parameter logger would be ideal if the product is sensitive to multiple factors, like temperature and humidity.

User Interface and Software: Sometimes, a costlier logger offers user-friendly software, simplifying data analysis and report generation. It’s worth weighing the time saved with advanced software against the initial cost of the logger.

Best Practices During Operations

By adhering to best practices, organizations can optimize their monitoring processes, ensuring the highest product safety and quality levels.

Proper Placement and Calibration: Placing a data logger is crucial in accurately capturing the conditions. If, for instance, the aim is to monitor the temperature inside a packed box, the logger should ideally be nestled within the product’s core. Positioning it near the box’s exterior might expose it to external fluctuations, affecting its readings.

It’s also essential to ensure that the logger remains unobstructed. Physical barriers, especially for loggers that gauge parameters like light or humidity, can distort the collected data. Data loggers also require regular calibration. This routine check, preferably against standards traceable to national or international benchmarks, ensures that the logger’s measurements remain correct and reliable.

Ensuring Continuous Operation: Preliminary checks on the logger’s battery can prevent unexpected downtimes. A fully charged or newly replaced battery ensures the device doesn’t falter midway, which could result in data loss. Similarly, storage is a factor to consider. The logger’s memory should be ample enough to store data for the monitoring duration.  Setting parameter thresholds allows deviations to be instantly flagged, making timely interventions possible and potentially saving valuable products or samples.

Data Interpretation and Analysis: Most data loggers are complemented by software that aids in data interpretation. These programs often convert raw data into graphical representations, simplifying identifying trends or anomalies. Regular data reviews can act as an early warning system. By consistently monitoring logger outputs, potential issues can be addressed before they become significant problems.

Regular backups ensure that even in the face of unforeseen device malfunctions or data corruption, historical datasets remain intact and accessible. Lastly, the human factor can’t be overlooked. The personnel in charge of the data loggers should be proficient. Proper training ensures that they accurately capture and interpret and act on the data appropriately.


Data loggers play a crucial role in the packaging industry, providing accurate monitoring that ensures product safety and quality. Their significance in maintaining standards and addressing potential issues is vital for successful outcomes. Humi Pak offers an extensive selection of advanced data loggers. Feel free to contact our packaging engineers to understand more about the available types.

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