Amprobe ULD-400 Series, User Manual, Page: 10 / 66

6
3. KIT COMPONENTS
3.3 ULD-400-T Transmitter
The ULD-400-T Transmitter is included with the ULD-420 kit and is optional for the ULD-410 kit.
When a leak is not pressurized sufficiently the Receiver will not be able to detect it. In these
circumstances, the ULD-400-T Transmitter can be used to emit an ultrasonic sound that
the Receiver can read. The Transmitter is programmed with three signal levels for precise
pinpointing of leaks.
Speaker
Low battery
indicator
LEDs:
high/
medium/low
signals
On/Off button
Signal level “+/-”
button
Figure 3.3: ULD-400-T Transmitter