LogTag Data Loggers

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Humidity Loggers

LogTag Humidity Loggers

LogTag humidity loggers are essential tools for monitoring and recording temperature and humidity levels in environments where precise control is critical. These compact, reliable devices are widely used across various industries to ensure product quality, safety, and compliance with regulatory standards. Below are some of the key applications for LogTag humidity loggers.

Key Uses of LogTag Humidity Loggers

  • Pharmaceutical and Vaccine Storage: Humidity loggers ensure that medications, vaccines, and biologics are stored within strict temperature and humidity ranges (e.g., 2-8°C, 20-80% RH) to maintain efficacy. They help comply with regulations like Good Distribution Practice (GDP) during storage and transport.
  • Food and Beverage Industry: From production to transportation, loggers monitor humidity to prevent spoilage, mold growth, or quality degradation in perishable goods like dairy, meat, and produce. They ensure compliance with HACCP standards.
  • Healthcare Facilities: Hospitals and laboratories use loggers to monitor humidity in operating rooms, storage areas for medical supplies, and labs to prevent equipment damage or microbial growth, ensuring patient safety and equipment reliability.
  • Museums and Archives: LogTag devices help preserve artifacts, paintings, and documents by maintaining optimal humidity levels (typically 40-60% RH) to prevent deterioration, mold, or material warping in galleries and storage vaults.
  • Logistics and Cold Chain: During transportation of sensitive goods, loggers track humidity and temperature to ensure products like electronics, chemicals, or fresh produce remain within acceptable conditions, providing auditable data for quality assurance.
  • HVAC and Building Management: Loggers monitor indoor environments to optimize HVAC systems, prevent mold in high-humidity areas, and maintain occupant comfort in offices, schools, or warehouses.
  • Agriculture and Greenhouses: Humidity loggers help farmers and growers maintain ideal conditions for plant growth, seed storage, or livestock comfort, ensuring optimal yields and animal welfare.
  • Electronics Manufacturing: In production facilities, loggers monitor humidity to prevent static buildup or corrosion, protecting sensitive components like circuit boards during manufacturing and storage.

The LogTag UHADO-16, a 2nd generation humidity logger, enhances these applications with advanced features. It offers 16,000 data sets for extended monitoring, a built-in LCD for real-time data viewing, direct USB connectivity for easy data retrieval, and automatic PDF report generation, making it more user-friendly and efficient than earlier models like the HAXO-8. Its replaceable battery and Wi-Fi compatibility further improve usability for modern, high-demand environments.

Feature
UHADO-16 (2nd Generation)
HAXO-8 (1st Generation)
Storage Capacity 16,000 sets (temperature & humidity) 8,000 sets (temperature & humidity)
Display LCD Display (real-time temperature, humidity, alarms, status) LED indicators (OK and Alert)
Connectivity Micro-USB, or LogTag Reader LogTag Reader only
Data Output Automatic PDF reports via USB, LogTag Analyzer software LogTag Analyzer software only
Battery User-replaceable CR2032 coin cell Fixed, 2-3 year lifespan
Temperature Range -30°C to +70°C -40°C to +85°C
Humidity Range 0-100% RH 0-100% RH
Humidity Accuracy ±2% RH (20-80% RH, typical) ±3% RH (20-80% RH, typical)
Review Function Yes (min/max readings, alarm duration via Review button) No
Recording Duration Up to 320 days at 30-minute intervals Up to 160 days at 30-minute intervals
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Latency explained

What is latency?

Latency, when it comes to temperature logging, refers to the delay between a change in temperature and when that change is detected and recorded by the logger. This delay can be due to the sensor’s design, the materials it’s placed in, or the logging interval. While it might sound like a disadvantage, latency can actually serve a useful purpose in certain environments—particularly where short-term temperature spikes are common but not harmful.

For example, in a busy commercial fridge, the temperature may briefly rise every time the door is opened. A logger with high latency won’t immediately react to these short fluctuations, helping to avoid unnecessary alarms or false data indicating a problem when there isn’t one. In these cases, a slight delay in response acts like a filter, focusing attention on real issues—such as prolonged exposure to unsafe temperatures—while ignoring the everyday ups and downs that don’t affect product quality or safety.

Differrnt connections

Connecting your logger

Depending on the type of logger you have, connecting your logger to your PC means either:

  • inserting into the Reader,
  • plugging it into a USB port, or
  • connecting it via a USB cable.
comparing gen1 and gen 2

What's so good about USB?

First Generation LogTags use a separate Reader (sometimes called a dock) for configuration and for downloading recorded data. 

The Second Generation loggers only require a USB port or cable. Apart from saving the cost of the Reader, this makes them much better suited for shipping, because the recipient doesn’t need a LogTag Reader to download a report about the shipment’s journey.

comparing gen1 and gen 2