Functions
7.14 Reflexor
FUS1010 IP65 NEMA 4X & IP66 NEMA 7
140 Operating Instructions, 01/2013, A5E02951520-AC
7.14 Reflexor
Reflexor is one of the operating modes available on certain SITRANS F 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 sensors that are used with transit-time flow measurement along with those which are
specifically designed for Doppler flow measurement. Use of any other sensor than shown in
these instructions may result in failure to measure or give an incorrect flow rate indication.
Typical Installation
The typical steps to complete the Reflexor installation procedure are as follows:
1. Collect the site data (pipe and liquid data, part numbers, etc.).
2. Choose a mounting location for the flow sensors.
3. Prepare the pipe for sensor’s mounting.
4. Access the Installation Menu and create a site.
5. Enter the pipe parameters.
6. Mount flow sensors on pipe and connect to flow meter.
7. Invoke the sensor installation procedure.
8. Optimize installation through use of the Spectra Display and diagnostic data.
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.
Application conditions may require you to mount the sensors using the adjacent mounting
method as described and shown in this section.
Selecting a Sensor Set
Maximum sensitivity will be obtained with use of the 191N1S sensor set.
Alternative sensors recommended for use by Reflexor include:
● 1011 Universal size C1, C2 and C3
● 1011 HP-T1 size B1H and A3H
● 1011 HP-T2 size B1H and A3H
● 1011 HP-T3 size B1H and A3H
● 991 Universal size 2 and 3A High and Very High Temperature versions
● 990 (991 Sensor)
The sensor models are also available for submersible and extended temperature
applications.
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