Emerson Rosemount SAM42 - Physical Installation of the Device

3 Physical installation of the device
This chapter contains information on physical installation of the
Rosemount SAM42 Acoustic Particle Monitor, assuming that field
cabling is already in place. This section also describes the differences
in the installation of the Standard Temperature (ST) and High
Temperature (HT) variants.
The SAM42 Acoustic Particle Monitor is mounted externally on the
pipeline and acts as microphone in the ultrasonic frequency range,
picking up ultrasonic noise induced by particle impingement or
scouring against the inside pipe wall.
Note
Always ensure that the equipment’s Ex classification follows the
hazardous area in which it is to be installed. Pay close attention to
the special installation requirements for safe use. Note that the Ex-
classification marking must be visible for inspection after installation.
Related information
Installing mounting socket onto the pipe with strapping for pipes >
NPS 2
Installing Rosemount SAM42 Acoustic Particle Monitor on small
diameter pipes (NPS 2) using U-bolts
Installing the Rosemount SAM42 Acoustic Particle Monitor onto the
mounting socket
3.1
Temperature considerations
Consideration should be given to the suitability of installing a SAM42
device given the expected maximum ambient temperature, the
maximum process temperature and the temperature class of the
explosive gasses expected at each installation location. The permitted
envelope of conditions for the Standard Temperature device is shown
in Figure 3-1 and for the High Temperature device is shown in Figure
3-2.
May2024 Quick Start Guide
Quick Start Guide 15