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The new series of USB Humidity/Temperature Data Loggers (HT10/20/50) from General Tools & Instruments (General®) makes long-term, unattended monitoring of a myriad of environments easier and less costly. According to the company, key features of General’s HT series include:
- Each unit enables users to keep an eye on temperature and humidity levels in virtually any setting.
- Although not much bigger than a thumb drive, each unit can record up to 16,000 data points (up to 8,000 pairs of ambient temperature and relative humidity [RH] readings) over a period of days, weeks or months.
- The series comprises three instruments, each with different attributes and value price points, and eliminates the need to bring a laptop to the job site because the user can start and stop logging with the simple push of a button.
- Included software on mini-disc is used to set the sampling interval (from 10 seconds to 12 hours) as well as Hi and Lo alarm setpoints for humidity and temperature.
- The USB interface means there’s no need for cables, cradles or docks to connect to a computer, and all data logs and calculations can be viewed as tables or graphs, or exported with one click to Microsoft Excel or Word.
- The mid-range HT20 features an LCD that shows real-time temperature and humidity readings and indicates the instrument’s working status.
- The HT50 and HT10 share all of the features and specifications of the HT20, but the HT50 includes an integral IR thermometer for spot-checking surface temperatures, while the HT10 relies on two LEDs to indicate working status.
- Each member of the HT Series has a temperature measurement range of -4° to 158°F (-20° to 70°C), a response time of 0.5 seconds and +/-0.7°F (0.4°C) accuracy.
- The RH measurement range is 10 to 90 percent with a 5-second response time and +/-3 percent accuracy.
- The IR thermometer in the HT50 has a measurement range of -4° to 482°F (-20° to 250°C).