Emerson Daniel 3410 Series, Installation Manual

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utilizes a single-path for the check measurement and an additional diagnostic path
designed to provide information about the bottom of the pipe. The single check
measurement path is positioned at 30 degrees off vertical while the diagnostic path is
vertical. All measurement paths measure the difference in signal transit time with and
against the flow.
Daniel 3416 and 3415 Gas Ultrasonic Flow Meter design
(1)
Figure 1-3:
A. Transmitter electronics enclosure (explosion-proof) Optional - Local Display with glass endcap
(
Figure 1-6 )
B. Base electronics enclosure (intrinsically safe)
C. Meter body with transducer assemblies (T-21 or T-22) (intrinsically safe)
Daniel 3415 Gas Ultrasonic Flow Meter is a custody meter and check meter in one body.
The primary custody meter is a 4-path British Gas meter design based on the Daniel 3414
model. The custody meter is independent and utilizes four direct (cross-bore), parallel-
plane measurement paths that offer a high degree of accuracy and repeatability. The
secondary check meter uses a single reflective (bounce) path rather than direct chordal
paths for measurement and is positioned at 30 degrees off vertical. All measurement paths
measure the difference in signal transit time with and against the flow.
The Daniel Gas Ultrasonic Flow Meter design is available with an optional glass end cap and
a local display.
(1) Model 3415 does not have the vertical bounce path (see Daniel 3415 description)
Introduction
8 Gas Ultrasonic Flow Meter