MOHAMMAD MAHDI Electronics Trading LLC
Hioki FT3700-20 Infrared Thermometer
Brand:
Hioki
SKU:
13595
Hioki thermometer FT3700-20 is a non-contact thermometer using infrared rays, accurately pinpointing the spot with a two-beam laser marker.
- Dual-Point Laser Target Marker: Two-point laser system clearly defines the actual measurement area boundary (D:S = 12:1) for pinpoint field accuracy.
- Wide Temperature Span: Measures -60.0°C to 550.0°C (-76°F to 1022°F) with high-speed 0.1°C resolution and continuous measurement lock.
- Adjustable Emissivity (0.10 to 1.00): Prevents reading errors on shiny metals, busbars, electrical panels, and HVAC ductwork across UAE industrial sites.
- Rugged Pistol-Grip Design: Built-in backlit display, high/low visual-acoustic alarms, and 1-meter drop-proof rating for MEP and utility maintenance.
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Description
What Is the Hioki FT3700-20 and Exactly What Is It Used For?
The Hioki FT3700-20 is an industrial-grade, non-contact infrared thermometer engineered for rapid, non-destructive surface temperature diagnostics ranging from -60.0°C to 550.0°C. As a flagship model in our Laser Thermometers collection, it is designed for electrical maintenance engineers and facility managers across the UAE and GCC. It pinpoints thermal hot spots in switchboards and transformers without physical contact, featuring an optical D:S ratio of 12:1 and an intelligent Two-Point Laser Marker for pinpoint field accuracy.
Key Factors to Evaluate Before Selecting an Industrial Infrared Thermometer
When selecting a non-contact thermometer for industrial compliance and electrical auditing (such as DEWA panel testing, MEP commissioning, and district cooling maintenance), technical buyers must evaluate these core benchmarks:
- Two-Point Laser Framing vs. Single Laser Dot: Single laser thermometers only show the center point, misleading technicians about the actual measurement circle. The FT3700-20 projects two distinct laser beams indicating the outer boundaries of the test diameter (ø83 mm at 1 meter).
- Adjustable Emissivity (ε = 0.10 to 1.00): Fixed-emissivity (0.95) units produce major measurement errors on polished metals, oxidized copper busbars, and aluminum conduits. The FT3700-20 allows micro-step emissivity adjustments in 0.01 increments.
- Optical Resolution (D:S Ratio): A 12:1 distance-to-spot ratio allows safe thermal inspections of energized 415V/11kV panels from a comfortable 1 to 2-meter standoff distance.
- Environmental Thermal Stability: Cheap commercial IR guns drift in extreme summer field temperatures. Hioki’s compensated thermopile sensor maintains calibrated accuracy even when transitioning between air-conditioned control rooms and 50°C outdoor substations.
What’s Included in the Hioki FT3700-20 Box?
Every genuine factory-sealed Hioki FT3700-20 non-contact thermometer package includes the following original equipment and accessories:
- 1x Hioki FT3700-20 Handheld Infrared Thermometer (MPN: FT3700-20)
- 1x Protective Carrying Case: Heavy-duty molded belt-holster pouch for field storage
- 2x AAA Alkaline Batteries (LR03): Providing up to 140 hours of continuous operation (with laser/backlight off)
- 1x Official Instruction Manual: Complete multilingual technical guide with emissivity reference tables
- 1x Factory Calibration Certificate: Verified trace data from Hioki EE Corporation
Engineering Verdict: Hioki FT3700-20 Field Evaluation & GCC Limitations
Where It Excels: The Hioki FT3700-20 is one of the most reliable pyrometers for routine preventive maintenance. Its primary advantage is speed and safety, allowing technicians to scan energized components from a distance. If you are deciding between traditional probe sensors and IR technology, read our technical breakdown: Contact vs. Non-Contact Thermometers: Which is Best for Your Application?.
Candid Engineering Limitation: While highly accurate for surface scans, the FT3700-20 cannot measure internal temperatures of liquids or solids. For high-voltage overhead lines or distant targets, you may require the long-focus Hioki FT3701-20 (30:1 D:S ratio) to ensure the measurement spot remains smaller than the target.
Budget Analysis & Total Cost of Ownership (TCO)
The Hioki FT3700-20 provides an optimal balance between low-cost unbranded thermometers and high-end thermal imaging cameras. While basic commercial IR guns fail to provide calibration traceability or adjustable emissivity, the FT3700-20 prevents catastrophic equipment failure by identifying true loose-terminal overheating. With standard AAA battery operation and zero moving mechanical parts, annual maintenance and lifecycle costs are practically zero.
Technical Benchmark Matrix: Hioki FT3700-20 vs. Competing Models
| Technical Specification | Hioki FT3700-20 | Fluke 62 MAX+ | Testo 830-T2 |
|---|---|---|---|
| Temperature Range | -60.0°C to 550.0°C | -30.0°C to 650.0°C | -30.0°C to 400.0°C |
| Optical Resolution (D:S) | 12:1 (ø83 mm at 1 m) | 12:1 (ø83 mm at 1 m) | 12:1 (ø83 mm at 1 m) |
| Target Sighting | Two-Point Laser Marker (Area Framing) | Dual Rotating Lasers | 2-Point Laser |
| Emissivity Setting | 0.10 to 1.00 (0.01 steps) | 0.10 to 1.00 (0.01 steps) | 0.10 to 1.00 (0.01 steps) |
| Basic Accuracy (0 to 100°C) | ±2.0 °C | ±1.0 °C or ±1.0% | ±1.5 °C or ±1.5% |
| Response Time | 1 sec (90% response) | < 300 ms | 0.5 sec |
| Drop Resistance | 1 meter on concrete | 3 meters on concrete | Standard casing |
Why is my laser light not displaying or appearing dim on the Hioki FT3700-20
If the laser marker is not visible, check that the laser function has not been manually toggled off in the secondary settings menu. Additionally, low AAA battery levels will automatically throttle the laser diode while maintaining sensor operation. Replace with fresh LR03 alkaline cells to restore full dual-beam output.
How do I set emissivity (ε) for copper busbars and electrical panels
Standard electrical PVC tape or matte black paint has an emissivity of 0.95, which is the factory default. When testing bare, shiny copper busbars, emissivity drops to approximately 0.10 to 0.30. To test accurately, either apply a small patch of black tape and measure with ε = 0.95, or adjust the FT3700-20 emissivity value via the MODE key to match your target material.
Can I get an ISO/IEC 17025 accredited calibration certificate in the UAE
Yes. While each Hioki FT3700-20 comes with an official factory certificate of conformity, authorized UAE distributors supply multi-point ISO 17025 accredited calibration certificates through local accredited calibration labs upon procurement request.
Can the Hioki FT3700-20 measure internal body temperature or liquids
No. The FT3700-20 is an industrial surface pyrometer. It measures infrared emissions from the outer surface of solids. It is not approved for clinical human temperature screening nor can it measure the internal temperature of liquids through transparent containers without an immersion probe.
Specifications
Specifications
| Specification | Details |
|---|---|
| Temperature range | -60 to 550 °C (0.1 °C resolution) |
| Accuracy | ±2 °C (0-100 °C); ±2% rdg. (100.1-500 °C); ±10% rdg. ±2 °C (-35 to -0.1 °C) |
| Measurement wavelength | 8 to 14 µm |
| Laser marker | Two-beam, max. 1 mW (class 2), red |
| Emissivity | ε = 0.10 to 1 (0.01 step) |
| Response time | 1 second (90%) |
| Functions | Continuous mode, MAX/MIN/DIF/AVG, alarm, backlight, auto power off |
| Power supply | LR03 (AAA) alkaline battery ×2 (approx. 140 h) |
| Dimensions | 48 (W) × 172 (H) × 119 (D) mm |
| Mass | Approx. 256 g |
Datasheet
Datasheet
Reviews (2)
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Bench Multimeters
Lucas –
Hioki FT3700-20 Infrared Thermometer quick and absolutely accurate
jade –
The FT3700-20 delivers fast, accurate infrared readings with pro-grade build quality and effortless one-handed use.