| Brand | Amprobe |
| Model | TH-3 |
The Amprobe TH-3 relative humidity (RH) and temperature meter simultaneously measures relative humidity and air temperature to provide dual-scale readings in F and C, and is used for HVAC, indoor air quality, and environmental applications. The capacitive humidity sensor measures RH from 0 to 100 percent. The extended probe has a cover to protect the sensor when taking measurements inside ducts. The meter has minimum, maximum, and hold functions for recording data, and relative zero functionality stores reference points. The meter requires one 9V battery (included), and includes a carrying bag, and instructions.
| Temperature range | -4 to 140 degrees F (-20 to 60 degrees C) |
| Temperature accuracy | or - 1.6 degrees F (0.8 degree C) |
| RH accuracy | or - 3 percent from 10 to 90 percent RH, and or - 5 percent at all other readings |
| Operating environment at less than 80 percent relative humidity | 32 to 104 degrees F (0 to 40 degrees C) |
| Storage environment (with battery removed) at less than 70 percent relative humidity | 14 to 140 degrees F (-10 to 60 degrees C) |
| Dimensions | 9.5 x 2.1 x 1.3inches (240 x 54 x 34 mm) (H x W x D) |
| Weight | Approximately 6.4 oz. (180g) |
H is height, the vertical distance from lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.
A thermohygrometer is a combination thermometer to measure temperature, and hygrometer to measure humidity. It monitors relative humidity and temperature in lab, office, home, and greenhouse applications
Amprobe manufactures electrical testing equipment for commercial, industrial, and home use. The company was founded in 1948 and is headquartered in Everett, WA
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