Figure 3-2: SAM42 High Temperature Operating temperature
limits
A. Maximum permitted ambient temperature
B. Maximum permitted process temperature
C. T6
D. T5
E. T4
F. T3
G. T2
3.2 Installation location for Rosemount SAM42 Acoustic
Particle Monitor
This section details how to install the device onto piping.
ST version up to 266 °F (130 °C) — Ensure there is a space between
the detector housing and any pipe insulation to allow the heat to
dissipate from the detector and the pipe. This space ensures the
detector's temperature is kept as low as possible. See Figure 3-3. For
pipe surface temperatures > +176 °F (+80 °C) it is recommended to
mount the detector either horizontally (as shown in Figure 3-4) or
below the pipe.
HT version up to 554 °F (290 °C) — Ensure there is a space between
the detector housing and any pipe insulation to allow the heat to
dissipate from the detector and the pipe. This space ensures the
detector's temperature is kept as low as possible. The device must
always be mounted either horizontally (as shown in Figure 3-4) or
below the pipe.
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 gases expected at each installation location. Recommended
and unsuitable combinations of conditions are shown for the
May2024 Quick Start Guide
Quick Start Guide 17
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