Sierra Instruments’ Instruction Manual Multi-Trak™ Model 670S
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CHAPTER 1: INTRODUCTION
Welcome to the Multi-Trak™
Sierra's Multi-Trak
™ Model 670S is an advanced state-of-the-art instrument for measuring
mass flow rates in very large ducts or stacks that have non-uniform velocity profiles, high
turn-down requirements, dirty gas streams, wide temperature ranges and fast velocity and
temperature changes. The Model 670S dynamically compensates for changes in the flow
profile by using up to four independent mass flow sensing points to measure the
instantaneous average gas mass flow velocity. The Multi-
Trak™ is commonly used in
petrochemical refining, coal-fired electric power generation, steel manufacturing and many
other industrial processes that face the challenge of accurate and repeatable gas mass flow
measurement in very large pipes or ducts.
An innovative, versatile and user-friendly microprocessor-based Human Machine Interface
(HMI) controls all functions of the Multi-
Trak™ system. The HMI is used to collect, visualize
and store flow data, as well as set up the individual sensor points, thus allowing the entire
system to be easily configured in the field. The Model 670S
’ HMI integrates the functions of
flow measurement, flow-range adjustment, field validation and diagnostics, and displays
mass flow rate and totalized flow, as well as other configuration variables. All of this data is
easily programmable from the HMI's easy-to-use touch screen.
Unlike single probe insertion sensors where each sensor point is on the same insertion
probe, each Model 670S sensor point is completely independent of the others, allowing for
easy field swap-out or cleaning of individual transmitters.
The Multi-Trak
™ offers a variety of features for ease of operation.
Averages the flow of 2-4 meters
Convert units f.i. for NLPS to SLPH
Setup density of the gas for mass flow measurement
Setup of the individual meters
Easy setup of the HMI system
Alarm setup
Touch screen operated
And many more…visit www.sierrainstruments.com
