Overview - Teledyne ADFM Pro20 Installation And Operation Manual

ADFM® Flow Meter
Section 1 Introduction

1.1 Overview

The ADFM Pro20 Velocity Profiler is designed for high
accuracy flow measurement for applications in pipe diam-
eters/flow depths up to 20 feet (6.1m), and in channels up to 10
feet (3m) wide. Common applications include installation in cir-
cular, rectangular, or trapezoidal channels. The system is also
frequently installed in irregular shaped (multi-point) channels. A
variety of hardware accessories for sensor installation is
available from Teledyne Isco (see Table 2-1 in Section 2.6.8). In
many cases, these accessories can be adapted for use in other
channel shapes.
The ADFM Intrinsic Safety Pro20 Velocity Profiler is cer-
tified by Factory Mutual Research Corporation. An IS system
consists of the flow meter located in a nonhazardous location,
connected to a sensor located in a class I, II, and III, Division 1,
Groups C, D, E, F, and G, or Class I, Zone 0, IIB hazardous (clas-
sified) locations with Type 6P protection; indoor/outdoor loca-
tions; and/or connection to a Druck Inc. PTX 1830 sensor in a
class I, II, and III, Division 1, Groups A, B, C, D, E, F, and G haz-
ardous (classified) locations.
C o m p l e t e inf o r m ati o n ab o u t IS systems is provided in
Appendix B.
The ADFM Hot Tap Velocity Profiler measures flow rates in
full and pressurized pipes and forced mains with inner diameter
of 1.5 feet (457 mm) to 9 feet (2.74m). The Hot Tap Insertion
sensor (HTI) is inserted through the pipe wall via an industry
standard, two-inch corporate-stop or ball valve and tapping
saddle.
Both Pro20 and HTI systems use pulse-doppler velocity profiling
technology to measure the velocity distribution within the flow.
For either system, the controlling electronics are housed in a wall
or console mountable box enclosure, or in a cylindrical canister
housing for suspension mounting in a manhole or other wet envi-
ronment. All ADFM systems can be powered by external 24 VDC
power. Internal batteries provide backup power for continuous
operation.
Ordering information for parts and accessories for these systems
can be found in Appendix A in the back of this manual.
1-1