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Extech RH390 Precision Psychrometer QATAR

1200.0QR

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Care information

Keep your products in top condition: Furniture – dust regularly, avoid sunlight, and clean spills fast. Electronics – keep dry, use a microfiber cloth, and protect from power surges. Building materials – store dry, handle safely, and avoid chemicals. Kitchenware – wash gently, use mild detergents, and store properly

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Description

Feature	Details
Product Name	Extech RH390 Precision Psychrometer / Hygro-Thermometer
What It Measures	• Relative Humidity (RH) • Air Temperature • Dew Point • Wet-Bulb Temperature — all derived from RH + temperature readings (FLIR)
Humidity Range	0 – 100 % RH, with ± 2% RH accuracy (for 20–90% RH) (FLIR)
Temperature Range (Air / Dew Point)	–30 °C to +100 °C (–22°F to 199°F) (FLIR)
Wet-Bulb Range	0 – 80 °C (32 – 176 °F), calculated (Instrumart)
Display	Dual backlit LCD — can show Humidity + Temperature, or Humidity + Dew Point, or Humidity + Wet-Bulb (user-selectable) (FLIR)
Response Time	Fast — sensor updates within about 30 seconds in moving air (Instrumart)
Functions / Features	Data Hold, MIN/MAX memory, auto-power-off (can be disabled), low battery indicator, dual display modes (ManualsLib)
Form Factor / Build	Handheld, portable psychrometer; slim design with rubberized sides for better grip and one-hand operation (TEquipment)
Included Accessories	Carrying case and 9 V battery (FLIR)
Ideal Uses / Applications	HVAC maintenance, building/environmental inspections, indoor climate & moisture monitoring, storage or archival humidity control, water-damage inspection / restoration, labs, greenhouses, warehouses, warehouses & HVAC / ventilation checks, environmental monitoring and more.