Portable ultrasonic inspection system for corona effect, arcing and gas leaks
The PULD-40 converts the ultrasonic signals produced by corona effect, electric arcing and gas or vacuum leaks into an audible sound, with an instant reading on its digital display and bar graph, in a lightweight unit ready to use within seconds.
Advantages
Corona, arcing and leak detection in a single unit
It locates corona effect, electric arcing and pressure or vacuum leaks with a high-sensitivity built-in cone-shaped sensor for close range, showing the reading on a digital display and an LED bar graph.
Reliable even in noisy environments
It works in a narrow band centred on 40 kHz and plays back the ultrasonic signal converted to audible sound through its built-in speaker or a headset, making it easier to tell the real signal apart from background noise in industrial plants.
Precise long-range parabolic sensor
The external parabolic sensor, optimised for 15 m, includes a sight and a laser pointer for precise aiming at insulators, arresters, cable terminations and other hard-to-reach overhead assets.
Lightweight design, ready in seconds
Weighing 528 g and built with an impact-resistant housing, the unit is ready to measure as soon as its switch is pressed, with 4 hours of autonomy per battery charge.
Applications
- Electrical inspection: locating corona effect and electric arcing on conductors and high-voltage installations.
- General mechanical inspection of motors, compressors, gears and pumps, as well as pressure or vacuum leaks.
- Checking the airtightness of aircraft doors and windows and other aviation-sector applications.
- Predictive maintenance in the chemical, petrochemical, manufacturing and textile industries, even in noisy environments.
About the product
Corona discharge is caused by the ionisation of the air around an electrically charged conductor, when the electric field is strong enough to form a conductive region without causing a full electrical breakdown. Besides representing an economic loss of energy for utilities, it generates corrosive gases that degrade and embrittle nearby materials.
The PULD-40 detects these ultrasonic emissions with a built-in cone-shaped sensor or an external parabolic sensor, showing the detected activity level in dB on its digital display and LED bar graph. The operator can also listen to the resulting audible signal to discriminate the real source from ambient noise.
Accessories available: external parabolic sensor with sight and laser pointer, ultrasonic noise generator for periodic verification of the unit, direct-contact sensor with magnetic holders for metal-clad cabinets and dry-type transformers, noise-isolating headphones and a hard-shell transportation case.
Technical specifications
| Dynamic range | 96 dB |
| Sensitivity (built-in sensor) | 0.125 mm diameter leak at 0.35 bar, at 3 m |
| Centre frequency and bandwidth | 40 kHz; 38 to 48 kHz |
| Operating distance | Optimised for 3 m (built-in sensor) or 15 m (parabolic sensor) |
| Battery | Lithium-ion; 4-hour autonomy; 2.5-hour charging |
| Operating conditions | -20°C to 60°C; storage -30°C to 85°C |
| Weight and dimensions | 528 g; 57 × 52 × 185 mm |
Frequently asked questions
What phenomena does the PULD-40 detect?
Corona effect, electric arcing and gas, pressure or vacuum leaks, converting the detected ultrasound into an audible signal and a numeric dB reading.
Can it be used in noisy environments?
Yes. Its detection is centred on a narrow band around 40 kHz, making it easier to tell the real signal apart from the ambient noise of an industrial plant.
What range does the external parabolic sensor offer?
It is optimised for 15 m and includes a sight and a laser pointer for precise aiming at hard-to-reach overhead assets.
Can the unit be checked before an inspection?
Yes, using the ultrasonic noise generator, which allows periodic verification of the system's operation.
Download the catalogue of Ultrasonic inspection system PULD 40.
If you want to acquire Partial discharge detector with quality, you can also consult prices of Partial discharge detector.
If you have any doubts or need advice from our engineers, don't hesitate to contact us and we will be pleased to help you. You can also call us at (+34) 982 20 99 20.