INFRARED THERMOMETER FT3700, FT3701 HIOKI

Non-Contact Temperature: A Modern Essential

In countless industries and everyday situations, measuring temperature accurately and safely is paramount. From preventing food spoilage to ensuring machinery operates efficiently, temperature monitoring is a critical task. Traditional contact thermometers often pose challenges, especially when dealing with moving parts, extremely hot surfaces, or hard-to-reach areas. This is where infrared thermometers become indispensable. These devices allow for precise, non-contact temperature measurement, revolutionizing how we approach thermal inspection. They offer a safe and efficient way to gather vital data without physically touching the object, minimizing risks and maximizing productivity.

Two Models for Diverse Temperature Needs

This advanced line of infrared thermometers offers two distinct models: the FT3700-20 and the FT3701-20, each designed to meet specific temperature measurement requirements. The FT3700-20 covers a wide measurement temperature range from -60.0°C to 550.0°C (-76°F to 1022°F), making it suitable for a broad spectrum of applications, from refrigeration monitoring to industrial process control. The FT3701-20 extends this capability even further, measuring temperatures from -60.0°C to 760.0°C (-76°F to 1400°F). Both models provide an excellent 0.1°C resolution, ensuring highly detailed and granular readings across their respective ranges. This dual-model approach allows users to select the exact tool for their specific high or low-temperature challenges.

Assured Accuracy Across Measurement Ranges

The accuracy of an infrared thermometer is crucial for reliable decision-making. These models boast impressive accuracy specifications across their primary operational ranges. For temperatures between -35.0°C to -0.1°C (-31.0°F to 31.9°F), the accuracy is ±10% rdg. ±2°C. In the crucial range of 0.0°C to 100.0°C (-32.0°F to 212.0°F), often critical for food safety and HVAC applications, the accuracy is a precise ±2°C. For higher temperatures, from 100.1°C to 500.0°C (212.1°F to 932.0°F), the device maintains a robust accuracy of ±2% rdg. It’s important to note that accuracy is not specified for extreme low temperatures (-60.0°C to -35.1°C) and above 500.1°C (for the FT3700-20) or 760.0°C (for the FT3701-20), highlighting the targeted precision within its defined operational limits.

Swift Response, Focused Measurement, and Wavelength

Speed and precision are key in diagnostic work. Both models feature an incredibly fast response time of 1 second (90%), meaning they provide quick and nearly instantaneous temperature readings. This rapid response is invaluable in dynamic environments where temperatures can change quickly, or when numerous measurements need to be taken efficiently. The instruments operate within a measurement wavelength of 8 to 14 µm, which is ideal for general-purpose industrial and commercial applications. This long-wave infrared range ensures stable and accurate readings for a wide variety of non-reflective materials. Furthermore, the measurement field diameter is precisely defined with a distance-to-spot ratio of 30:1, meaning at a distance of 3000 mm (9.84 ft), the measurement spot is φ 100 mm (3.94 in). This precise targeting, aided by laser sighting, ensures you measure exactly what you intend to.

Enhanced Targeting with Dual Laser Markers

Precise targeting is paramount for accurate non-contact temperature measurement, especially at a distance. These infrared thermometers are equipped with two-beam laser markers, a feature that significantly enhances usability and accuracy. This Max 1 mW (class 2) red laser system clearly defines the boundaries of the measurement spot, ensuring that users are pointing at the correct area and accurately capturing the temperature of the intended target. Unlike single-point lasers which only show the center, the dual-beam system outlines the actual area being measured. This eliminates guesswork, reduces errors, and allows for confidence in readings, particularly when dealing with small components or when standing further away from a hazardous object.

Practical Functions for Diverse Applications

Beyond core temperature measurement, these infrared thermometers integrate a suite of practical functions designed to enhance efficiency and versatility. The continuous measurement mode allows for ongoing monitoring of temperature changes. The inclusion of MAX/ MIN/ DIF (MAX – MIN)/ AVG measurement functions enables users to quickly identify temperature extremes, calculate temperature differences, and determine average temperatures over a period – critical for identifying anomalies or trends. An alarm function can be set to alert users when temperatures exceed or fall below pre-defined thresholds, preventing damage or ensuring safety. A backlight ensures readability in dimly lit environments, and auto power-off conserves battery life, making the device reliable for extended use.

Applications Across Industries: Where It Shines

The versatility of these infrared thermometers makes them indispensable across a vast array of industries and everyday scenarios:

• HVAC Systems: Quickly checking vent temperatures, ductwork, and compressor performance for energy efficiency and fault detection.
• Electrical Maintenance: Identifying hot spots in electrical panels, circuit breakers, and connections to prevent failures and fires.
• Automotive Diagnostics: Measuring engine temperatures, catalytic converters, and tire temperatures for troubleshooting and performance assessment.
• Food Safety: Ensuring proper temperatures in refrigeration units, ovens, and during food preparation to meet health regulations and prevent spoilage.
• Manufacturing & Industrial Processes: Monitoring temperatures in machinery, bearings, furnaces, and production lines to ensure optimal operation and prevent overheating.
• Building Inspections: Detecting insulation deficiencies, moisture issues, and thermal bridges to improve energy efficiency and identify potential structural problems.
• Home & DIY Use: Checking appliance temperatures, plumbing, and even identifying drafts for basic home maintenance.
• Pest Control: Locating nests by identifying temperature differences in walls or attics.

The ability to safely and quickly obtain non-contact temperature data is a game-changer in these fields, improving efficiency, reducing downtime, and enhancing safety.

Compact Design, Long Battery Life, and Accessories

These infrared thermometers are designed for ultimate portability and convenience. With compact dimensions of 48 mm (1.89 in) W × 172 mm (6.77 in) H × 119 mm (4.69 in) D and a lightweight design of just 256 g (9.0 oz) (including batteries), they fit comfortably in the hand and are easy to carry. The power supply relies on two standard LR03 (AAA) alkaline batteries, offering an impressive 140 hours of continuous use (with laser marker, backlight, and buzzer off). This exceptional battery life minimizes interruptions during prolonged fieldwork. Each unit comes with essential included accessories: an instruction manual, the two LR03 alkaline batteries, and a durable carrying case for protection and easy transport. This comprehensive package ensures users are ready for immediate temperature measurement right out of the box.