Справочник Пользователя для Siemens SITRANS FUS1010 NEMA-4X/ IP 65

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We recommend Reflect mount whenever possible. This is the simplest way to mount the transducers.
Also, Reflect mount resists abnormal flow profile conditions such as cross-flow within the flow stream.
Reflect mode supports the AutoZero function, which zeroes the meter automatically without stopping
flow. In addition, Reflect mount may be the only possibility if conditions do not allow access to the
opposite side of the pipe.

Direct mount provides a shorter sonic beam path. This can improve performance with sonically attenu-
ative liquids or pipe materials. We recommend using Direct mount for plastic pipes. Compared to
Direct mounting, Reflect mount requires almost double the amount of a mounting length. Therefore,
Direct mount may be the only option if the availability of mounting space is limited.

1.  Pick a mounting location with the longest straight run. You must have easy access to at least one

side of your pipe. The mounting location must remain full, even at zero flow.

2.  Decide on your mounting mode (Direct or Reflect). Always use Reflect Mode whenever possible.

You may only need to use Direct Mode if your pipe is plastic.

3.  After receiving the spacing dimensions from the Installation Menu, prepare the pipe surface. De-

grease the surface, if necessary, and remove any grit, corrosion, rust, loose paint, etc. Use abra-
sive material provided to provide a clean contact surface for the transducers.

4.  Refer to the next sections for illustrated instructions on how to locate each area to be cleaned and

how to use each mounting option.

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Cleaned areas. Clean an area 1/2” on either side
of transducer and an additional 1/2” along the
length of the transducer

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Upstream
Transducer

Sonic Path

Pipe

Downstream

Transducer

Upstream
Transducer

Sonic Path

Pipe

Downstream
Transducer