Mounting The Acoustic Emission Sensor - Siemens SITRANS DA400 Operating Instructions Manual

Assembly

4.3 Mounting the acoustic emission sensor

2. Mount the device preferably at a right angle with the cable gland pointing downward.
4.3 Mounting the acoustic emission sensor
Condition
To mount the acoustic emission sensor, you need the following:
● One hexagon socket-head screw M6x16
● One positioning pin ∅ 3x10
They are included in the scope of delivery.
Mounting the acoustic emission sensor
1. Mount each acoustic emission sensor individually on the pipe or chute.
2. Mount the acoustic emission sensor preferably near a bend or in a position where a high
sound level is produced by impact.
Note
Do not mount the sensor in the vicinity of restrictive points, such as:
• partially shut control valves
• baffles
• other places with reduced pressure
There is a good acoustic coupling if no elastic elements such as seals or the like are located
between the sensor and the wall. Thus, there are good ferrous connections. The wall must
be made of metal or some other highly sound conductive material.
The acoustic emission is coupled to the sensor via the sensor base. Therefore, the housing
foundation must be uniformly even, smooth, and be at least as large as the sensor base.
It is not permissible to have an air gap between the sensor base and housing or wall.
If necessary, use a viscous lubricating grease to improve the coupling. The lubricating
grease is not included in the scope of delivery.
The following figure demonstrates an optimal mounting of the acoustic emission sensor:
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SITRANS DA400 for material flow monitoring with protection against explosion
Operating Instructions, 09/2007, A5E00841152-01