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Extech RH401 Digital Psychrometer + InfraRed Thermometer
Item #:
EXT-RH401
Brand:
Extech
Share this product:
RH401 Digital Psychrometer + InfraRed Thermometer by Extech
Features
- Triple display with backlighting: View Air temp+RH+surface temp; View Dew Point+RH+surface temp; View Wet Bulb+RH+surface temp
- InfraRed Thermometer with Built-in laser pointer, 8:1 distance to target ratio, Adjustable Emissivity from 0.3 to 1.0
- Precision humidity capacitance sensor is retractable for protection during transportation and storage
- Calculates T1 (IR Surface Temperature) - DP (Dew Point) differential
- Programmable Auto power off and Low battery indication
- Over-range/under-range alert indicator
- Built-in RS-232 interface for capturing readings on a PC
- RH401 complete with 4 AAA batteries and carrying case
- Optional RH405 kit includes meter, 33% and 75% calibration bottles, RS-232 cable, 4 AAA batteries and carrying case
Applications
- Monitor Wet Bulb, Dew Point, Relative Humidity and Temperature in factories, clean rooms, offices, and greenhouses
- Non-contact InfraRed surface temperature measurements in hard to reach areas such as heating and air conditioning duct
- Humdity monitoring in schools, offices and manufacturing or storage areas
Display | Triple LCD with backlight |
Sensor Type | Humidity: Capacitance sensor; Temperature (air): Thermistor |
Dew Point | -90.4 to 122.0°F (-68 to 50°C) (calculated from humidity and temperature measurements) |
Wet Bulb | -6.9 to 122.0°F (-21.6 to 50°C) (calculated from humidity and temperature measurements) |
IR Emissivity | Adjustable from 0.3 to 0.99 |
IR Spot/Distance Ratio | 8:1 |
IR Response Time | 0.5 seconds |
Operating Conditions | -4 to 122°F (-20 to 50°C); < 99% RH non-condensing |
Storage Conditions | -40 to 185°F (-40 to 85°C); <99% RH non-condensing |
Power Supply | 4 x 1.5V 'AAA' batteries or AC adaptor |
Battery Life | approx. 150 hours (laser inactive); 30 hours (laser active) |
Dimensions / Weight | 6.8x2.7x1.9" (175x70x50mm); 4.9 oz. (140g) |
Function |
Range and Resolution |
Accuracy |
Humidity |
0.0 to 100.0% RH |
±3% RH (10 to 90%) |
Temperature (Air) |
-4.0 to 122.0°F (-20 to 50°C) |
±1.8°F (±1°C) |
Temperature (InfraRed) (@25°C ±5°C) |
-4 to 842°F (-20 to 450°C) |
±3% reading or ±3°C/6°F whichever is greater |
-40 to -4°F, 842 to 932°F -40 to -20°C, 450 to 500°C |
±4% reading or ±4°C/8°F whichever is greater |