Справочник Пользователя для Siemens SITRANS FUS1010 NEMA-4X/ IP 65
7-1
1010NFM-3J
Section 7
7.
THE SYSTEM 1010 REFLEXOR FLOWMETER
Reflexor is one of the operating modes available on certain 1010 models. The Reflexor operating mode
utilizes Doppler flow detection along with digital signal processing techniques to successfully measure
flow under conditions that may not be suitable for transit-time flow measurement. The Reflexor samples
the flow stream as it detects Doppler shift. It converts the Doppler shift information by use of Fast
Fourier Transform (FFT) and filters the FFT to determine the flow rate. The Reflexor mode will operate
with many of the same transducers that are used with transit-time flow measurement along with those
which are specifically designed for Doppler flow measurement. Use of any other transducer than
shown in these instructions may result in failure to measure or give an incorrect flow rate indication.
utilizes Doppler flow detection along with digital signal processing techniques to successfully measure
flow under conditions that may not be suitable for transit-time flow measurement. The Reflexor samples
the flow stream as it detects Doppler shift. It converts the Doppler shift information by use of Fast
Fourier Transform (FFT) and filters the FFT to determine the flow rate. The Reflexor mode will operate
with many of the same transducers that are used with transit-time flow measurement along with those
which are specifically designed for Doppler flow measurement. Use of any other transducer than
shown in these instructions may result in failure to measure or give an incorrect flow rate indication.
7.1
REFLEXOR INSTALLATION STEPS
The typical steps to complete the installation procedure are as follows:
•
Collect the site data (pipe and liquid data, part numbers, etc.).
•
Choose a mounting location for the flow transducers.
•
Prepare the pipe for transducer’s mounting.
•
Access the Installation Menu and create a site.
•
Enter the pipe parameters.
•
Mount flow transducers on pipe and connect to flow meter.
•
Invoke the transducer installation procedure.
•
Optimize installation through use of the Spectra Display and diagnostic data.
Please do not allow the size of the Installation Menu to intimidate you. Almost all menu cells will contain
default parameters and will not require any additional action. To obtain operation you will only need to
access the menu cells for required parameters, such as pipe data. Obtaining accurate flow rate data
will take less than five minutes.
default parameters and will not require any additional action. To obtain operation you will only need to
access the menu cells for required parameters, such as pipe data. Obtaining accurate flow rate data
will take less than five minutes.
Application conditions may require you to mount the transducers using the adjacent mounting method
as described and shown in paragraph 7.4.
as described and shown in paragraph 7.4.
7.2
SELECT A TRANSDUCER SET FOR USE BY REFLEXOR
The transducer recommended for use by Reflexor is any of the currently available Spectra transduc-
ers. For general purpose dedicated use, this is the 191N1S transducer set. Alternate transducers are
any of the 1011 size C Universal, 991 size 2 and 3A including High and Very High Temperature versions
along with the 1011 High Precision size A3 and B1. The maximum sensitivity will be obtained with use
of the 191N1S transducers. Transducer models are available for submersible and extended tempera-
ture applications.
ers. For general purpose dedicated use, this is the 191N1S transducer set. Alternate transducers are
any of the 1011 size C Universal, 991 size 2 and 3A including High and Very High Temperature versions
along with the 1011 High Precision size A3 and B1. The maximum sensitivity will be obtained with use
of the 191N1S transducers. Transducer models are available for submersible and extended tempera-
ture applications.