Description
The Hioki Infrared Thermometer FT3700 / FT3701 is an advanced, non-contact infrared temperature measurement tool designed for precision, safety, and efficiency. Built with industrial professionals in mind, it allows users to measure surface temperatures instantly and accurately without making physical contact, making it ideal for environments where heat, movement, or electrical hazards pose a risk.
Equipped with a dual-beam laser marker, the FT3700 and FT3701 ensure pinpoint accuracy by clearly defining the exact measurement spot. This feature helps users target small or distant surfaces with confidence, making it suitable for applications such as HVAC inspection, electrical maintenance, motor testing, and manufacturing process monitoring.
The FT3700-20 offers a wide-area long-focus measurement range, while the FT3701-20 provides a precise-field focus for single-point measurements, ensuring flexibility across diverse testing environments. Both models feature a pistol-grip design with an easy-to-read backlit LCD, enhancing visibility even in dim or confined areas.
With a response time of just one second, this thermometer delivers immediate readings within a temperature range of -60°C to 760°C, depending on the model. The adjustable emissivity (0.10 to 1.00) allows users to fine-tune accuracy based on the material being measured, ensuring reliable performance across metals, plastics, and other surfaces.
The FT3700 / FT3701 also supports multiple measurement modes — including continuous, MAX, MIN, DIF, and AVG — giving professionals greater insight into temperature variations. Powered by two AAA batteries, the unit offers up to 140 hours of continuous operation, supported by an auto power-off function for energy efficiency.
Compact, durable, and safe, the Hioki Infrared Thermometer FT3700 / FT3701 provides the precision and convenience professionals need to maintain efficiency and safety in high-demand work environments.
Technical Specifications
| Specification | FT3700-20 | FT3701-20 |
| Measurement Range | -60°C to 550°C (-76°F to 1022°F) | -60°C to 760°C (-76°F to 1400°F) |
| Accuracy | ±2°C (0–100°C), ±2% rdg (100.1–500°C) | ±2°C (0–100°C), ±2% rdg (100.1–760°C) |
| Response Time | 1 second (90%) | 1 second (90%) |
| Measurement Wavelength | 8 to 14 µm | 8 to 14 µm |
| Emissivity Adjustment | 0.10 to 1.00 (0.01 steps) | 0.10 to 1.00 (0.01 steps) |
| Laser Marker | Dual-beam, Class 2, Red | Dual-beam, Class 2, Red |
| Field of View (D:S) | 30:1 | 30:1 |
| Functions | MAX/MIN/AVG/DIF, Alarm, Backlight, Auto Power Off | MAX/MIN/AVG/DIF, Alarm, Backlight, Auto Power Off |
| Power Supply | 2 × AAA alkaline batteries | 2 × AAA alkaline batteries |
| Continuous Use | Approx. 140 hours | Approx. 140 hours |
| Dimensions (W × H × D) | 48 × 172 × 119 mm | 48 × 172 × 119 mm |
| Weight | 256 g (with batteries) | 256 g (with batteries) |
| Included Accessories | Carrying case, Batteries, Instruction manual | Carrying case, Batteries, Instruction manual |
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