Temperature & Humidity Data Logger ( HTC – PDF LOG )

Description

The HTC PDF LOG Temperature & Humidity Data Logger is a compact yet robust environmental monitoring device engineered for precision and simplicity. Ideal for sectors such as cold-chain logistics, pharmaceutical storage, server rooms, museum archives, laboratories, and greenhouses, this logger ensures accurate tracking of ambient temperature and relative humidity. With automated PDF report generation and long-term memory storage, it is the perfect solution for users requiring reliable environmental compliance and documentation.

Precision measurement is at the core of PDF LOG’s design. It records temperature within the range of –40 °C to +70 °C and humidity from 0% to 100% RH, with high resolution of 0.1 °C and 0.1% RH. Temperature accuracy is ±1.0 °C over –40 °C to +40 °C and ±2.0 °C elsewhere up to 70 °C, while humidity accuracy reaches ±3.0% RH within the 45–75% zone and ≤±5% RH outside that band. This combination of range and accuracy ensures consistent and reliable readings across diverse monitoring conditions.

With a memory capacity of up to 25,000 entries per parameter (totaling 50,000 temperature and humidity readings), the PDF LOG device supports continuous environmental logging without frequent downloads. Sampling intervals are fully programmable, ranging from 1 second to 24 hours, enabling flexible logging cycles for both short-term investigations and long-term storage monitoring.

The logger features an integrated LCD display to view real-time data directly on the device. It also utilizes dual LED indicators—one to show recording status and the other to flash alarms when readings exceed user-defined high or low thresholds—ensuring immediate visible feedback for critical conditions. The system supports both audible and visual alert configurations, making it effective in environments where quick corrective action is essential.

One of the standout functionalities is its capability to generate PDF-format reports directly. Once connected to a PC via USB, users can instantly retrieve and review logged data without needing proprietary software. This simplifies audit documentation and regulatory compliance. The included advanced software also enables graphical and spreadsheet-style viewing, as well as automatic report generation, which streamlines record-keeping for quality control and environmental compliance.

Battery life is another notable strength. Powered by a CR2032 3.0 V lithium cell, the PDF LOG can operate for over two years, depending on usage conditions and ambient temperature, thanks to efficient power management and auto-shutdown features. A low-battery alert ensures users are notified well before performance degrades.

Designed for portability and discrete placement, the logger is incredibly compact—measuring approximately 97 × 44 × 13 mm and weighing around 200 g. It is ideal for deployment in tight spaces like cold-storage units, shipping containers, or server racks. A locking mechanism—available as an optional feature—prevents unauthorized access or accidental configuration changes, enhancing reliability in controlled settings.

The PDF LOG is easy to use: set recording intervals, configure high/low alarm thresholds, and insert the battery. The device begins logging data immediately once activated. Operating without active power or display usage allows silent monitoring, while the USB interface provides quick access to stored data whenever needed.

This device supports multiple environments and applications, including temperature-sensitive pharmaceutical transport, archival document and art preservation, food storage, warehouse management, HVAC system testing, and laboratory ambient monitoring. With its straightforward PDF log output, absence of proprietary software barriers, and long-term reliability, it empowers non-technical users to perform compliance logging with minimal training.

Safety and build quality are woven into every aspect of the product design. It features stable sensing electronics and internal calibration routines to ensure minimal drift over time. The device functions reliably across temperature fluctuations, maintaining consistent accuracy even in cooler or warmer environments.

In summary, the HTC PDF LOG Temperature & Humidity Data Logger is an outstanding tool for continuous, accurate, and user-friendly environmental monitoring. Its feature set—including wide measurement range, high resolution, extensive memory capacity, PDF-format report generation, long battery life, alarm notifications, locking option, and compact design—make it ideal for professionals seeking dependable, audit-ready logging solutions. Whether monitoring cold-chain storage, museum artifacts, server cabinets, laboratory spaces, or greenhouses, it ensures your environmental data is recorded accurately and reported effortlessly.