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Extech RH490 Precision Hygro-Thermometer with NIST
Item #:
EXT-RH490-NIST
Brand:
Extech
Share this product:
RH490 Precision Hygro-Thermometer with NIST by Extech
Features
- Less than 30 second RH response time
- Water vapor in GPP (g/kg)
- Dual backlit display
- Simultaneous display of: Humidity or GPP (g/kg) plus Temperature; Humidity or GPP (g/kg) plus Dew Point; Humidity or GPP (g/kg) plus Wet Bulb
- Slim design with rubberized sides for better grip and for one hand operation
- Data Hold and Min/Max functions
- Auto power off with disable and low battery indicator
- Complete with carrying case and 9V battery
| Display | Dual LCD |
| Response Time | <30 seconds (90% of final value in moving air) |
| Operating Conditions | 32 to 122°F (0 to 50°C); < 80% RH non-condensing |
| Storage Conditions | -40 to 185°F (-40 to 85°C); <99% RH non-condensing |
| Power Supply | 9 Volt battery |
| Battery Life | Approx. 24 hours |
| Dimensions / Weight | 7.8 x 1.7 x 1.3" (200 x 45 x 33mm); 7 oz. (200g) |
Function |
Range and Resolution |
Accuracy |
Humidity |
0.0 to 10.0%RH |
±3%RH |
10.0 to 90.0%RH |
±2%RH |
|
90.0 to 100.0%RH |
±3%RH |
|
Temperature |
30.0 to -20.0°C -22.0 to - 4.0°F |
±1.5°C ±2.7°F |
-19.9 to 70.0°C -3.9 to 158.0°F |
±1°C ±1.8°F |
|
70.1 to 100.0°C 158.1 to 199.0°F |
±1.5°C ±2.7°F |
|
Wet Bulb |
0 to 80°C (32 to 176°F) |
Calculated from RH and air temperature measurements |
Dew Point |
-30 to 100°C (-22 to 199°F) |
|
Mixing Ratio |
0 to 1120 GPP (grains per pound) 0 to 160 g/kg (grams per kilogram) |
