Wohler UL 23, Руководство пользователя

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Wöhler UL 23 / US 23
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The intensity of sound generated at a leak is a very complex function of the
viscosity, the temperature, the speed the fluid is moving, the Raynolds
number, the pressure differential across the leak, and the physical dimen-
sions and characteristics of the orifice. This is why it is possible for a small-
er leak to generate more sound than a larger one.
The UL 23 detects ultrasound, not refrigerant or the presence of a specific
gas. It is not a sniffer. Because of this fact, the UL 23 can function in areas
where heavy wind or a concentration of fumes renders other detectors use-
less.
3. Operation
3.1. Operational Elements
Figure 3.1: Operational elements
1 On/Off-button: hold the ON/OFF button during the operation
2 LED-display: shows the intensity of the received ultrasonic signal
3 Sensitivity adjustment: upper position corresponds to full sensitivity
4 Headphone-jack
3.2. Operation
To use the system, plug the headphone into the jack located on the right
side of the instrument. Slide the sensitivity adjustment all the way forward,
towards the sensor. The UL 23 is now set at full sensitivity. Depress and
hold the „ON/OFF“ button to turn the instrument on. The button does not
require much pressure. You can use your left thumb to hold this button, and
your left index finger to adjust the sensitivity level. Always start at full sensi-
tivity, then if necessary, gradually reduce the sensitivity to reduce back-
ground noise. Note,
once the „ON/OFF“ button is released, the power is
turned off. This will conserve battery power.
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