CiDRA GVF-100 Gas Volume Fraction Monitoring System - Manual (Page 7)

Copyright © 2006 CiDRA Corporation Page 1-1
20639-01 Rev 03
1
INTRODUCTION
The CIDRA Corporation SONARtrac TM Model GVF-100 (Gas Volume
Fraction) Monitoring System is a clamp-on process monitoring system
used to measure the gas volume fraction (amount of entrained air /
gas) contained in a fluid within process pipes on a real-time basis.
The SONARtrac
TM
GVF-100 utilizes patented array processing
techniques to listen to and interpret the acoustic field generated by
machinery, piping and flow present in process flow. The clamp-on
design eliminates the need for cutting pipe or interrupting process flow
during installation.
The SONARtrac TM GVF-100 consists of a common transmitter and
sensor heads sized for different pipe diameters.
SONARtrac TM gas volume fraction meters certified for use in
hazardous areas are rated for use in Class I, Division 2, Groups A, B,
C, and D environments (per US and Canadian standards).
This manual covers the basic installation and setup of the
SONARtrac
TM Model GVF-100 Monitoring System. In all cases, local
safety and operating practices take precedence over the information
contained within this document.
For additional information, contact your local sales agent or CiDRA
Corporation Customer Support by telephone at 1-877-243-7277
(1-877-CIDRA77) or by E-Mail at [email protected]
1.1 Sensor Head Description and Function
The SONARtrac TM sensor head contains no moving parts. The sensor
head includes a sensor band and a fiberglass or stainless steel cover
assembly to protect the sensor band. The sensor band is wrapped
around and clamped onto the process pipe. A multi-conductor cable
electrically connects the sensors to an electronic module mounted in
the cover assembly. Signals from the electronic module exit through a
NEMA 4X rated connector mounted to the outer surface of the cover
assembly.
1.2 Transmitter Description and Function
The SONARtrac TM transmitter receives electrical signals from the
sensor head. The signals are processed using SONARtrac TM array
processing firmware that displays the calculated results on an integral
LCD screen. Results can also be transmitted using the 4–20mA
analog output, pulse output, alarm output or the RS-485/232 digital
output. The electronic assembly is housed in a rugged NEMA 4X
enclosure.