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LD 500_SHORT BAL_V2.03 EN Page 12 of 20

The highest sensitivity level 0 – 60 dB of the unit can be set using the "HiSn" button or by manually

changing the sensitivity level using the "Sensitivity" button. This mode should be used for the detection

of small leaks in a quiet environment.

6.5.1 Sensitivity level button

You can manually switch between individual levels with the

"Sensitivity" button or use the auto function to adjust the level.

The order is shown in the chart on the left.

6.5.2 Auto function (default)

The auto function (automatic change of the sensitivity levels) is activated by default. This means that

the measured ultrasound level is used to automatically adjust the optimum measurement range.

Example: Level = 71 dB → Level: 20 – 80 dB

6.5.3 Manual sensitivity adjustment

It is also possible to switch between sensitivity levels. This can be done with the "Sensitivity" button.

It helps the user to reduce interfering noise and detect leakages as easily and quickly as possible. The

user should frequently increase and decrease the sensitivity to scan the target surface for leakages

with the adjusted sensitivity. Decreasing the sensitivity makes the device react to a smaller area but

also reduces the range.

6.5.4 Procedure for leakage detection

Different approaches to leakage detection are

recommended depending on the ambient condi-

tions.

Option 1 – In what direction can the leakage be

heard? This method is used to aim in all directions

and find the loudest point. The loudest point

should then be approached to precisely locate the

leakage. Works well when there is less interference

from noise.

0 –

60 dB

10 –

70 dB

20 –

80 dB

30 –

90 dB

40 –

100 dB

Auto

function

(start)

CS Instruments LD 500 Short User Guide

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