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Reference, Installation, and Operations Manual Section 2: Product overview
3-9000-743 Rev S June 2013
Daniel Mark III Ultrasonic Gas Flow Meters assembly 13
Lower intrinsically-safe base unit assembly
All Mark III meter models utilize the same lower intrinsically-safe base unit assembly (see
Figure 2-2).
Base Unit
• encloses the intrinsically-safe Acquisition Board that interfaces with transducers
• connects the main electronics assembly to the meter body
Figure 2-3 CPU Board (switch-side view)
When the analog Series 100 Option Board or the Series 100 Plus Option Board is installed,
its corresponding I/O connectors on the Field Termination Board are automatically
activated for use.