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The Amprobe TH-1 relative humidity (RH) and temperature meter simultaneously measures relative humidity, dew point, and wet- and dry-bulb 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. It requires one 9V battery (included), and includes a carrying bag, and instructions.
Specifications
Temperature range -4 to 122 degrees F (-20 to 50 degrees C) Temperature accuracy + or - 1 degree F (0.6 degree C) RH accuracy + or - 4 percent from 10 to 95 percent RH, and + or - 5 percent at all other readings Wet bulb range 23 to 139.8 degrees F (-5 to 59.9 degrees C) Wet bulb accuracy + or - 1 degree F (0.6 degree C) Dew point range -4 to 139.8 degrees F (-20 to 59.9 degrees C) Dew point accuracy + or - 1 degree F (0.6 degree C) Resolution 0.1 percent, 0.1 degree (F or C) Sensor hysteresis + or - 1 percent RH 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 6.89 x 1.65 x 0.63 inches (175 x 42 x 16 mm) (H x W x D) Weight Approximately 6.4 oz. (180g) Standards met EN 50081-1/1992 : EN 55022, EN 50082-1/1997 : EN 55024, (EN 61000-4-2/-3/-8, ENV 50204)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
What’s in the Box?
- TH-1 relative humidity meter
- CR2032 battery
- Instructions
Customer
Reviewed in the United States on October 5, 2023
Pros: Compact, fits I'm my shirt pocket and easy to read.Cons: Not durable, not accurate, flimsy.
M A.
Reviewed in the United States on April 1, 2016
Worked well for about four months, then quit completely. Cannot recommend this device.
Jim
Reviewed in the United States on August 4, 2015
Works as described but very slow reaction time in the temp.
JOHN MORRIS
Reviewed in the United States on September 21, 2013
The first one did not respond when I installed the battery.No display....nothing. The second one also did absolutely nothing. The THIRD one did absolutely when installing the battery. Alll the batteries, (3 volts), were good.....(3.255 volts to 3.256 volts). All three of the TH-1's were defective and did nothing when energized. The displays did not turn on or even blink!
Hvac tech2141
Reviewed in the United States on February 2, 2012
I bought this in July and used if for maybe 3 months. I have trouble getting it to turn on. I love the size, fits comfortably in my cargo pocket. I am shopping for a new one because I'm afraid It won't last much longer. Feels very cheaply made. Should be priced at $15 instead of nearly $70
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