Infrared thermal imagers, acoustic imagers, and ultraviolet imagers are the three mainstream non-contact detection devices, each relying on distinct detection principles and offering unique advantages in various scenarios.
| Thermal Imager | Acoustic Imager | Ultraviolet Imager | |
| Detection Target | Thermal radiation | Ultrasonic waves generated by gas leaks, partial discharges, etc. | Ultraviolet light generated by corona discharge, electric arc, etc. |
| Imaging Principle | Receive infrared electromagnetic waves and convert them into temperature images. | Microphone arrays receive ultrasonic waves, visualizing the location of the sound source | Receiving the ultraviolet signal generated during the discharge and superimposing it on the visible light image. |
| Main Output | Thermal images, temperature values, temperature curves | Sonogram, sound pressure level | Ultraviolet photon counting, ultraviolet spot superimposed on visible light video |
| Applications | Building diagnostics, electrical testing, and equipment monitoring | Gas leak location, partial discharge detection location, mechanical vibration, and abnormal noise detection location. | High-voltage corona discharge detection and insulator deterioration diagnosis |
| Advantages | Display temperature intuitively and has a wide range of applications. | Non-contact, long-distance rapid location of minute leaks and discharges, and identification of discharge types. | Unaffected by sunlight, it can identify and locate minute discharges and operate in all weather conditions. |
Passive Detection: Requires no energy emission; receives only the infrared radiation emitted by the object itself.
Global Perspective: A single scan acquires the entire temperature distribution map, quickly locating abnormal hotspots.
Quantitative Analysis: Measures precise temperature values at specific points, supporting point temperature measurement, area temperature measurement, and isotherm marking, meeting industrial-grade accuracy requirements.
Non-Contact, Long-Distance: Enables safety inspection of high-voltage equipment and high-temperature areas, avoiding the risk of personal injury
Building Diagnosis: Locate building insulation defects, leaks, underfloor heating malfunctions, etc.
Power Safety: Detecting potential overheating hazards in substations and transmission lines caused by circuit breakers, transformers, cable joints, etc.
Industrial Production: Detects abnormal temperatures in production line equipment (motors, bearings, pipes) for predictive maintenance.
Scientific Research and Development: Analyzes heat dissipation in electronic products
Fire Protection and Security: Fire search and rescue; nighttime monitoring; temperature screening for epidemics.
Infrared Resolution: Higher resolution results in a clearer image and the ability to detect smaller targets.
Thermal Sensitivity (NETD): Represents the smallest temperature difference that can be resolved. A lower value means greater sensitivity to minute temperature differences.
Temperature Measurement Range: Selectable based on the application scenario, such as -20°C ~ 150°C for electronics and construction, and 0°C ~ 500°C for industrial equipment.
Software Functions: Data export, professional report analysis, and export functions, etc.
640x480 high resolution
NETD < 25mk
Temperature measurement range: -20℃～+600℃ (expandable to 1700℃)
Multiple image modes: infrared, visible light, picture-in-picture, DSX
Laser-assisted focusing
Professional infrared analysis software for remote control and data analysis/export
640×480 high resolution, NETD < 35mk
Temperature measurement range: -20℃～+600℃ (expandable to 1200℃)
Multiple lens options: standard/wide-angle/telephoto
Multiple temperature measurement modes: automatic high and low temperature tracking, line temperature measurement, rectangular temperature measurement, circular temperature measurement, isothermal analysis, temperature difference measurement, temperature alarm (sound, color)
Professional infrared analysis software enables remote control and data analysis export
"See" the Sound: Supports audible and ultrasonic frequency bands, visualizing ultrasonic waves inaudible to the human ear and intuitively locating sound sources;
Strong Anti-interference Capability: Manually adjustable test frequency range effectively filters interference.
Fast Scan: Real-time display of sound source location;
Gas Leak Detection: Detects minute leaks in compressed air systems, gas tanks, valves, pipelines, etc.
Discharge Detection: Detects discharges caused by faults in switchgear, insulators, cable terminals, etc.
Mechanical Vibration and Noise Monitoring and Location: Detects abnormal ultrasonic waves generated by bearing defects, cavitation, gearbox malfunctions, etc.
Number and layout of microphone array: A higher number of microphones generally results in higher positioning accuracy and resolution.
Frequency range: Ensure it covers the frequencies of the sound sources to be detected.
138-channel digital MEMS microphone;
Effective test frequency range of 2kHz-100kHz;
7-inch high-brightness capacitive touchscreen with 1920x1200 resolution;
Laser ranging and leakage assessment functions.
High Specificity: Sensitive to partial discharge, used for detecting ultraviolet radiation generated by corona discharge, etc.
Non-contact and Real-time: Can be used while the equipment is running, without power outages
Power equipment inspection: pollution discharge of insulators on high-voltage transmission lines, corona discharge inside GIS (Gas Insulated Switchgear), and surface discharge of transformer bushings.
Substation Equipment Inspection: Live-line testing of equipment such as transformers, instrument transformers, and circuit breakers.
Industrial Scenarios: Insulation defects in high-voltage motor windings, discharge at high-voltage cable terminations.
Sensitivity: A crucial parameter measuring the ability to detect weak ultraviolet signals, measured in watts per centimeter (W/cm²). Generally, it should be less than 10 to the power of -15; the lower the W/C, the higher the sensitivity.
Magnification and Field of View: Determine the observation range and distance.
Dual-Spectrum Fusion: Precisely overlays ultraviolet and visible light images for accurate fault location.
Patented full-day blind technology, strong anti-interference.
Ultraviolet light sensitivity 2.0×10⁻¹⁸ watt/cm²;
10X optical zoom, 12X digital zoom;
Accurate superposition of ultraviolet and visible light across the entire area for precise positioning.
Professional analysis and reporting software.
Infrared sensors are most widely used for thermal imaging; acoustic sensors provide precise leak detection; and ultraviolet sensors are highly specialized for electrical detection. Choosing the right instrument based on the core needs of the specific scenario is crucial for achieving more accurate and efficient testing!
