The user can easily set up the logging rate and start-time, and download the stored data by plugging the module straight into a PC's USB port and running the purpose designed software under Windows 98, 2000 or XP. Relative humidity, temperature and dew point (the temperature at which water vapor present in the air begins to condense) data can then be graphed, printed and exported to other applications. The data logger is supplied complete with a long-life lithium battery, which can typically allow logging for a year. Status indication is via flashing red and green LEDs. The logger is protected against ingress from water and dust to IP67 standard when the plastic cap and seal are fitted.

Features:

• Waterproof - can be submerged in 4 feet of water
• 0 to +100% RH
• -31 to 176°F (-35 to +80°C) measurement range
• Dew point indication via Windows Control Software
• USB Interface for Set-up and data download
• User-programmable alarm thresholds for %RH & T
• Status indication via red and green LEDs
• Supplied with replaceable internal lithium battery and Windows Control Software
• Environmental protection to IP67

Operating Systems:

Windows 98, 2000 and XP (Home and Professional Editions)

Spec Summary:

Relative humidity
Measurement range:	0 to 100%RH
Accuracy (overall error)(20-80%RH):	±3.5**
Temperature
Measurement range:	-31 to 176°F (-35 to +80°C)
Accuracy (overall error):	±2°F(±1°C)/max. ±5°F(±2.5°C)
Dew Point
Accuracy (overall error) (77°F/25°C, 40to 100%RH):	±4°F(±2°C)***
Operating temperature range:	-31 to 176°F (-35 to 80°C)
1/2AA 3.6V Lithium Battery Life*:	1 year

*Depending on sample rate, ambient temperature and use of alarm LEDs
** This specifies the overall error in the logged readings, for relative humidity measurements between 20 and 80%RH.
***This specifies the overall error in the calculated dew point, for relative humidity measurements between 40 and 100%RH at 77°F (25°C).