Setup
91518 Multigas Analyzer Service Manual
2-12
Connecting the Multigas Analyzer to a Scavenging System
To prevent pollution of the operating room, the gas sample should be vented from the operating room. Connect
the gas outlet port of the multigas analyzer (refer to
on page 1-4) to the hospital scavenging system
(or anesthesia machine), or return the gas to the patient circuit.
Caution:
Do not connect the multigas analyzer directly to a vacuum scavenging system. Strong scavenging
suction can change the operating pressure of the multigas analyzer and can cause inaccurate
readings or damage to the analyzer.
Scavenging Through the Hospital Scavenging System
• Connect an exhaust line to the gas outlet port on the module’s front panel
• Insert the other end of the line into the hospital scavenging system. Ensure that the ventilation tube
diameter is at least two to three times larger than the exhaust line.
Caution:
Only connect the scavenging line to an open scavenging system, where the gas is removed at
room pressure. Do not connect the multigas analyzer directly to a vacuum scavenging system.
Figure 2-12: Scavenging through hospital ventilation
Scavenging Through the Anesthesia Machine Gas Scavenging System
Some anesthesia machines are equipped with an anesthesia gas scavenging system (AGSS). You may be
able to connect the multigas analyzer scavenging line directly to the AGSS. Refer to the documentation that
came with your anesthesia machine to determine if the scavenging line can be connected to the AGSS.
Room air
Hospital
scavenging
system
Gas
outlet
port
