Инструкции Пользователя для Bacharach Tru Pointe 2100

9

Tru Pointe® 2100

Instruction 0028-9003

The Airborne sensor is used to detect sound waves which travel to the Tru Pointe

®

 2100 through 

the air.  The most common airborne application is compressed air or refrigerant leak detection.

When searching for leaks with the Tru Pointe

®

 2100, remember that you are listening for the 

turbulent fl ow of the gas as it fl ows from the leak orifi ce (refer to “Principles of Operation” on page 
15 for a more detailed explanation).  The Tru Pointe

®

 2100  is capable of hearing leaks from over 

fi fty feet away, but it is best to hold the instrument as close to the test area as safely possible.

1. 

Stand several feet from the suspected leak area and reduce the sensitivity of the 
Tru Pointe® 2100 until only 1 or 2 LED’s are lit.

2. Scan 

around 

fi ttings, fl anges and all other suspected leak sources.

NOTE:  If the LED Bar Graph Display is at maximum, 
reduce the sensitivity and continue scanning.

3. 

The sound in the headset and the LED Bar Graph Display will increase as the unit 
gets closer to a leak.

In the case of large refrigerant leaks remove the nose cone and the waveguide and increase the 
sensitivity.  Then sweep the instrument over the entire area.

The Tru Pointe

®

 2100 detects a narrow band of ultrasonic sound, therefore although there may 

appear to be an overwhelming background noise, the sound may not be within the detection 
range of the Tru Pointe

®

 2100.

Leaks sound like a “hiss” or rushing sound, while compressors “chatter” a rhythmical mechanical 
pattern.  Fans should not produce any wind noise detectable by the Tru Pointe

®

 2100, although 

the fan motor may produce a “buzz” or “hum”.

EXAMPLE:  Mechanical vibrations sound very different 
from leak sounds.  Shake a set of keys, and then take a 
short quick breath through the nose.  Listening to both 
sounds through the Tru Pointe

®

 2100 is a good example 

of how its direct translation process helps to distinguish 
the difference between the two signals.

Practice listening to different components of the test area, this will help to identify problems from 
other normal operational sounds.

The following methods can help reduce the amount of background noise detected by the Tru 
Pointe

®

 2100:

1. Placing 

the 

fl exible waveguide onto the airborne sensor will make the reception of 

the Tru Pointe

®

 2100 more directional.  This helps shield the sensor from compet-

ing sounds entering from other directions.  Cupping a hand around the end of the 
wave guide will also help to reduce the background noise.