Figure 1-3. Explosion-Proof Ultima Xir Monitor - MSA Ultima X Series Installation & Maintenance Instructions Manual

The Ultima XE Gas Monitor is housed in a 316 stainless steel
explosion-proof enclosure (FIGURE 1-2 shows the Ultima XE
with the optional explosion-proof HART port).
.
Figure 1-2. Explosion-Proof Ultima XE Monitor
The Ultima XIR Gas Monitor is housed in a 316 stainless steel
explosion-proof enclosure (FIGURE 1-3).

Figure 1-3. Explosion-Proof Ultima XIR Monitor

If your application requires the sensor head to be located separately
from the control unit, all models are available with Remote Sensor
Modules (shown in FIGURES 1-4, 1-5 and 1-6).
1-2