Amprobe ULD-420 Ultrasonic Leak Detector
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Amprobe ULD 420
The Amprobe ULD-420 Ultrasonic Leak Detector is an advanced tool designed for detecting and locating leaks in compressed air systems, plumbing, refrigeration, and gas lines. Using ultrasonic technology, the ULD-420 can identify high-frequency sound waves generated by leaks, mechanical defects, or electrical discharge, converting them into audible signals that users can interpret to pinpoint problem areas. This device is highly valuable for professionals in HVAC, manufacturing, automotive, and utility industries where accurate leak detection is essential for preventing energy waste, equipment damage, and costly repairs.
The ULD 420 leverages ultrasonic technology to detect sound frequencies beyond the range of human hearing, typically in the range of 20 kHz to 90 kHz. This allows the device to identify leaks in pressurized systems, electrical discharges, and mechanical issues such as bearing wear or cavitation in industrial equipment.
Amprobe ULD-420 Key Features
- Transmitter generates an ultrasonic signal when working in unpressurized systems
- Three Receiver filters to remove main noise frequencies in noisy environments
- Adjustable Receiver sensitivity for accurate leak pinpointing
- 20 kHz to 90 kHz frequency range: optimal range for detecting a variety of leakage events
- 2.5” LCD display with bargraph
- Quality headphones to help identify the source of the leak
- Parabola accessory directs the ultrasound towards the sensor
- Detachable Tubular Extension provides additional reach in hard to reach areas
specifications
| Feature | ULD-400-R Receiver | ULD-400-T Transmitter |
| Sensitivity Adjustment | • | – |
| Volume Adjustment | • | – |
| Signal Level Adjustment | – | • |
| Earphone Jack (3.5 mm) | • | – |
| Display Size | LCD 2.5 in (6.35 cm) | – |
| Display Dimensions | 1.45 x 1.93 in (36.72 x 48.96 mm) | – |
| Display Resolution | 240 (RGB) x 320 pixels | – |
| Display Type | TFT-LCD (262 K) | – |
| Display Color | True, 16-bit color | – |
| Frequency Range | 20 kHz to 90 kHz | Typical 40 kHz squarewave |
| Filter | ±5 kHz of main noise frequency, up to three filters | – |
| Power Supply | 4 x 1.5 V AA (LR6) alkaline batteries | 2 x 1.5 V AAA (LR03) alkaline batteries |
| Power Consumption (typical) | 75 mA | 33 mA |
| Battery Life (typical) | 105 hours (Alkaline) | 60 hours (Alkaline) |
| Low Battery Indication | • | Red LED |
| Weight | Approx. 0.518 lb (0.235 kg) | Approx. 0.335 lb (0.152 kg) |
| Dimensions | 7.547 x 2.984 x 1.791 in (183 x 75 x 43 mm) | 5.295 x 2.559 x 1.326 in (137 x 65 x 33 mm) |
| APO Function | 60 minutes when idle | – |
| Operating Temperature | -4 °F to 122 °F (-20 °C to 50 °C) | -4 °F to 122 °F (-20 °C to 50 °C) |
| Storage Temperature | -4 °F to 158 °F (-20 °C to 70 °C) | -4 °F to 158 °F (-20 °C to 70 °C) |
| Operating Humidity | <80% RH | <80% RH |
| Pollution Degree | 2 | 2 |
| Protection Rating | IP40 | IP40 |
Datasheet
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