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The Extech HD500 is a 3-in-1 combination meter that brings together the functions of a humidity meter, a Type K thermometer, and a non-contact InfraRed thermometer in a single handheld instrument. It measures relative humidity, contact temperature via a Type K probe, and surface temperature without contact, while also deriving dew point and wet bulb values. The patented non-contact InfraRed thermometer technology is built directly into the hygro-thermometer body, giving the operator multiple measurement modes from one device.
Extech positions the HD500 for home inspection applications, where the ability to read humidity, air temperature, and non-contact surface temperature from a single tool is well suited to assessing building conditions. The combination of a hygro-thermometer with built-in infrared surface measurement supports moisture-related and temperature-related inspection work without carrying separate instruments.
ValueTronics stocks and holds its own inventory in a 20,000 sq ft secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. Because we keep instruments like the HD500 on hand rather than sourcing them on demand, we can move quickly on availability and condition questions.
Extech Instruments has operated as part of FLIR Systems since FLIR's 2007 acquisition of the company. FLIR Systems was subsequently acquired by Teledyne Technologies in 2021, bringing the Extech line under the Teledyne FLIR organization.
| Specification | Value |
|---|---|
| InfraRed Thermometer | |
| Range | -58 to 932°F (-50 to 500°C) |
| Basic Accuracy | ±2% or ±4°F/2°C |
| Distance to Target Ratio | 30:1 |
| Type K Temperature | |
| Range | -148 to 2501°F (-100 to 1372°C) |
| Accuracy | ±(1% + 1°C) |
| Air Temperature | |
| Range | 14 to 140°F (-10 to 60°C) |
| Accuracy | ±(2% ±4ºF/2°C) |
| Relative Humidity | |
| RH Range | 0 to 100%RH |
| Accuracy | ±2%RH |
| Dew Point | |
| Range | -90.4 to 140°F (-68 to 60°C) |
| Wet Bulb | |
| Range | -6.88 to 140°F (-21.6 to 60°C) |
| General | |
| Dimensions | 10 x 2.9 x 2" (255 x 75 x 50mm) |
| Weight | 12.3oz (350g) |
This is a brand-new, factory-sealed unit, supplied exactly as it arrives from the manufacturer and backed by the full manufacturer warranty. For the exact configuration, available options, included accessories, or current lead time for your application, our Test Architects can confirm the details before you order.
ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application.
Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.
Model No
Extech
Condition
Factory New
Manufacturer
Extech
30+ Years in Business
Secure Payments
Sell Test Equipments
Knowledgeable Staff
On-site Lab
30+ Years in Business
Secure Payments
Sell Test Equipments
Knowledgeable Staff
On-site Lab
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