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1010GCNFM-3C
Section 4
To select a Transducer Type:
To access the [Transducer Model] option list press
To move the cursor to the required transducer model press
To store your selection press
4.4.2 HOW TO SELECT A TRANSDUCER SIZE
When you move the cursor to Transducer Size, the highlighted prompt at the top of the display screen
shows a list of recommended transducer sizes. For example [Recommended Xdcrs: D3,D2,D1,C1,C3].
The flowmeter generates this list automatically based on your pipe and your application data entries. The
left-most transducer size (e.g., D3) is the primary (most appropriate) choice. The right-most transducer
(e.g., C3) is still acceptable (but the least desirable) choice. Since these are simply recommendations not
requirements, you can override the flowmeter and use any size, as long as the mounting method ac-
commodates the pipe’s diameter. The flowmeter shows that your selection is acceptable if it is able to
calculate transducer spacing (Ltn).
To select a Transducer Size:
To access the [Transducer Size] option list press
To move the cursor to the desired transducer size press
To select the transducer press
4.4.3 HOW TO SELECT A XDCR MOUNT MODE
The flowmeter recommends the transducer mounting mode [Direct or Reflect]. In almost all cases it will
be Reflect, since this is the most desirable configuration. Reflect Mode allows you to mount the transduc-
ers on pipes that do not permit back or side access. Reflect Mode provides inherent compensation for
flow profile distortion (crossflow) that could be the result of unfavorable application conditions such as an
insufficient upstream straight run. In addition, Reflect mode supports the AutoZero function, which sets
the zero flow velocity automatically.
Direct mounting may produce a stronger transducer signal and requires less mounting length than Re-
flect mounting. This can be important if the gas or pipe material exhibits high sonic attenuation, thereby
preventing operation in the Reflect configuration.
To select a Xdcr Mounting Mode:
To access the [Xdcr Mount Mode] option list press
To move the cursor to the required mounting type press
To store selection press
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