This device measures Humidity, Air Temperature, Dew Point temperature, Wet Bulb temperature and mixing ratio for quick assessment of air moisture content. Advanced features include Data Hold, Auto Power Off, and MAX/MIN reading. It is invaluable for facility maintenance and utility technicians, HVAC-service contractors, and specialists who assess indoor air quality (IAQ).

FEATURES

• Large, easy-to-read backlit LCD with dual display
• Fast response time
• High accuracy, quick response
• Temperature measures in °C / °F
• Data Hold
• Dew Point and Wet Bulb temperature measurement
• Mixing ratio
• Resolution 0.01
• Max / MIN function
• Auto Power Off
• Low battery indication

SPECIFICATIONS

Description	Precision Humidity and Temperature Meter
Model	TH3321
Relative Humidity
Measurement Range	0 to 100%RH
Measurement units	%RH
Basic Accuracy	± 2% (40 to 60%)RH ± 3% (20 to 40% and 60 to 80%)RH ± 4% (0 to 20% and 80 to 100%)RH
Resolution	0.1%
Response Time	10sek (90% at +25°C still air)
Sensor	Precision capacitance
Temperature
Measurement Range	-30° to 100°C
Measurement units	°C / °F
Basic Accuracy	± 0.5% (-20° to 60°C) ± 1.% (-30° to -20°C and 60° to 100°C)
Resolution	0.01°
Sensor	Thermistor
Dew point temp.
Measurement Range	-30° to 100°C
Accuracy (25°C, 40-100%RH)	±1°C
Wet bulb temp.
Measurement Range	0° to 80°C
Accuracy (25°C, 40-100%RH)	±1°C
Display	Large, easy-to-read backlit LCD with dual display
Over-range	“OL” mark indication
Power type	3 x 1,5V AA alkaline batteries
Auto shut-off	Auto shut off after 10 minutes (or disable AUTO power off)
Product weight	210g (with batteries)
Product dimensions HxWxD	240 x 63 x 28 mm
Approvals	CE
Accessories	Batteries, carrying case, manual