Wohler UL 23, Руководство пользователя

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Wöhler UL 23 / US 23
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10. Ultrasonic sound generator US 23
For the detection of leaks at non-pressurized rooms and enclosures the
ultrasonic sound generator US 23 generates ultrasound with 115 dB that
cannot be heard (see chapter 3).
10.1. Operational elements
Figure 10.1: Operational elements US 23
1 On/Off: Switches the advice on/off
2 Mode-Select: Changes the output of the generator from continuous
tone to „Burst Tone“.
3 Mode: shows the selected mode
4 Battery (green: full batteries, red: low or empty batteries)
11. Technical Data
Frequency Control Precision Crystal Oscillator
Output Frequency 40 kHz (+/-2.5 Hz)
Frequenzy Accuracy +/- 50 parts per million
Precision Voltage Regulator 1% Regulation
Output Intensity 115 db at 30 cm. (nominal)
Dual Mode Output Continuous or Burst Tone
Power 9 Volt Cell
Battery Life (approx.) 70 hrs. continuous, 90 hrs. Burst
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