550C Infrared Thermometer ( HTC – MT-4 )

Description

The HTC MT‑4 Digital Infrared Thermometer is a rugged, professional-grade non-contact temperature measurement tool delivering fast and reliable readings for diverse applications. Designed with True infrared sensing and a built-in laser pointer for precise targeting, the MT‑4 excels in fields like food processing, HVAC maintenance, asphalt testing, marine diagnostics, plastic molding, and fleet service checks.

With a wide measurement range from –50 °C to +550 °C (–58 °F to 1022 °F), the MT‑4 accommodates both low-temperature processes and high-heat industrial scenarios. Its resolution is refined to 0.1 °C / 0.1 °F, while accuracy is rated at ±2 °C / ±2 °F for readings above 0 °C (32 °F) and ±4 °C (±7 °F) between –20 °C and 0 °C. This ensures dependable output across temperature extremes.

The thermometer boasts an optical distance-to-spot ratio of 12:1, enabling accurate measurements from a safe distance—ideal for scanning hot surfaces, conduits, machinery, and moving components without contact. The adjustable emissivity range (0.1–1.0) helps optimize accuracy across different surface types, including metals, plastics, and coated materials.

Featuring a fast response time under 500 ms, the MT‑4 provides nearly real-time temperature feedback. It includes MAX/MIN recording, a useful data-hold mode, and an easily readable backlit color LCD display, making it easy to capture the highest and lowest temperatures encountered during scanning sessions.

User controls are intuitive. A trigger-based scan powers the device and shows “SCAN” on the display; releasing the trigger holds the reading briefly before automatic shut-off after ~20 seconds. The multi-function display indicates current reading, hold status, emissivity setting, MAX/MIN values, polarity (negative readings), and low battery alerts, all of which enhance usability and reliability.

Built to last, the MT‑4 is powered by a standard 9 V battery, supports auto power-off, and features an ergonomic plastic casing with wrist strap support. It weighs approximately 176 g and measures 155.5 × 98.8 × 27.5 mm, making it both lightweight and comfortable for prolonged use in field environments.

Key safety considerations include the proper use of the class‑2 laser, which aids targeting without posing high visual risk; users are advised not to direct the beam toward eyes or reflective surfaces. The device also warns users about limitations: do not use on shiny metals, transparent materials like glass, or dirty/contaminated surfaces, as this may compromise measurement accuracy.

Performance specifications include:

• Spectral response between 8–14 µm for accurate IR detection

• Emissivity adjustable from 0.1 to 1.0 for customized surface compensation

• Resolution of 0.1 °C/°F

• Over‑range indication and automatic negative polarity display for clarity

• Operating ambient temperature of 0 °C to 50 °C overall, with storage up to 60 °C

• Relative humidity operating up to 95% RH, storage ≤80% RH

This thermometer is suited to a wide spectrum of industrial and technical scenarios:

• Oven surface temperature checks in food and baking industries

• HVAC duct and compressor inspections

• Motor winding and bearing surface checks

• Hot spot scanning in electrical panels and power systems

• Asphalt paving and large-scale surface temperature profiling

Additional features like auto trigger off, power-saving auto shutdown, °C/°F unit selection, and responsive data functions make the MT‑4 a smart, efficient tool that saves time and battery. Its large color display with backlight also supports low-light conditions, further enhancing field usability.

In summary, the HTC MT‑4 Infrared Thermometer combines broad temperature range, fast response, precision targeting, and a robust set of functionality in a compact handheld package. Its clear display, emissivity adjustment, MAX/MIN recording, and safe non-contact measurement make it an excellent choice for professionals requiring accurate, reliable thermal readings in demanding settings.