Instruction manual
CS Instruments 
- 4 - 
Air leaks produce wide-band ultrasounds in the range of 20 ... 80 kHz. The 
higher the frequency the more energy it contains. But higher frequencies 
can't be transported in air that far. That's why LD 300 operates at a centre 
frequency of 40 kHz which compromises an optimum between energy and 
distance. Frequencies below and above are cut in order to minimize the 
noise level. 
Scope of delivery 
Description 
Order No. 
LD 300 Leak Detector set consisting of: 
0601 0103 
  LD 300 Leak Detector 
0560 0102 
  Sensor unit 
0605 0001 
  Noise isolated head set   
0554 0102 
  Focus tube and focus tip 
0530 0101 
  Cable to detach sound probe from instrument 
0553 0101 
  Battery charger 
0554 0001 
  Transport case 
0554 0101 
Accessories not includes in set: 
Ultrasonic Tone Generator 
0554 0103 
Telescope extension with cable 
0530 0102 










