Baker Hughes Panametrics AquaTrans AT600, Руководство пользователя

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Chapter 1. General installation instructions
8 AquaTrans™ AT600 User’s manual
1.8 Mounting the clamp-on fixture and transducer system
The AT600 transducer system includes one or two clampon fixtures, two transducers and one transducer cable. One
clamp-on fixture is shipped with both transducers installed and the transducer cable connected to the transducers.
This fixture is the default setup for most applications. If a second fixture has been ordered, it is shipped empty.
Transducers available for use with the AT600 flow meter are listed in table 1 below.
Table 1: Available transducers
1
Go directly to: “Installing a CF-ES clamp-on fixture and transducer system” on page 16
2
Go directly to: “Installing a general clamping fixture and transducer system” on page 17
The AT600 clamp-on fixture and AT6 transducer system can be installed on pipe sizes >2 in. (50 mm). For optimum
performance in any specific application, either a twotraverse or one-traverse installation can be chosen. Because
the maximum pipe size for a single clamp-on fixture is 250 mm for 2 MHz transducers or 320 mm for 1 MHz and 0.5 MHz
transducers, the detailed installation requirements differ based on the calculated transducer spacing and the
chosen number of traverses. Refer to table 2 below to find the parameters for your specific configuration.
IMPORTANT: See “Sensor setup” on page 56 to calculate the required transducer spacing. A two traverse installation is
recommended for most applications.
IMPORTANT: If there is any type of coating or protective layer on the outer pipe surface, it must be removed at the
locations where the transducers and couplant contact the pipe surface.
From the information on the previous page and the documentation included with your AT600 flow meter system, you
should already know the following details about your installation:
• Pipe size
• Transducer model
• Transducer frequency
• Number of traverses
• Calculated transducer spacing
• Number of clamp-on fixtures
Based on the known information, proceed directly to one of the following sections in the next chapter for instructions
on installing your AT600 clamp-on fixture(s) and transducers on the pipe:
Note:
See the flowchart in Figure 9 on page 9 to assist in choosing the appropriate instructions for your specific
configuration.
• “Transducer spacing = 32 to 250 mm or 50 to 320 mm, traverses = 2, fixtures = 1” on page 11
• “Transducer spacing = 320 to 940 mm, traverses = 2, fixtures = 2” on page 13
• “Transducer spacing = 0 to 250 mm or 0 to 320 mm, traverses = 1, fixtures = 2” on page 14
• “Transducer spacing >320 mm, traverses = 1, fixtures = 2” on page 16
Model Frequency Fixture Pipe sizes
AT6 2, 1, 0.5 MHz AT600 >2 in. (50 mm)
CF-LP
1
4 MHz CF-ES 0.5-2 in. (15-50 mm)
UTXDR1 4 MHz SPCF 0.5-8 in. (15-200 mm)
C-RS
2
1, 0.5 MHz GCF >2 in. (50 mm)
C-PT
2
2, 1, 0.5 MHz GCF >2 in. (50 mm)