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Sierra Series 220 and 221
™
Innova-Flo Vortex Flow Meters
Instruction Manual
Part Number IM-22
05/03 Revision C
IMPORTANT: This manual is for use with 220/221 Vortex Products
purchased during 1997 through January 2006
CORPORATE HEADQUARTERS
5 Harris Court, Building L Monterey, CA 93940
Phone (831) 373-0200 (800) 866-0200 Fax (831) 373-4402
www.sierrainstruments.com
EUROPE HEADQUARTERS
Bijlmansweid 2 1934RE Egmond a/d Hoef The Netherlands
Phone +31 72 5071400 Fax +31 72 507
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Table of Contents Series 220/221 Instruction Manual Customer Notice Unless you have specifically ordered Sierra’s optional O cleaning, this flow meter 2 may not be fit for oxygen service. Sierra Instruments, Inc., is not liable for any damage or personal injury, whatsoever, resulting from the use of Sierra Instru- ments standard mass flow meters for oxygen gas. You are responsible for clean- ing the mass flow meter to the degree required for your oxygen flow application.
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Series 220/221 Instruction Manual Table of Contents Table of Contents Chapter 1 Introduction ™ Innova-Flo Vortex Flow Meters........................................................ 1-1 Using this Manual ......................................................................... 1-1 Note and Safety Information ......................................................... 1-2 Receipt of System Components .................................................... 1-2 Technical Assistance ..........
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Table of Contents Series 220/221 Instruction Manual Chapter 4 Troubleshooting and Repair Hidden Diagnostics Menus..................................................................4-1 Column One Hidden Diagnostics Values......................................4-2 Column Two Hidden Diagnostics Values .....................................4-2 Analog Output Calibration ..................................................................4-3 Troubleshooting the Flow Meter ........................
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Series 220/221 Instruction Manual Table of Contents Warnings and Cautions Warning! Agency approval for hazardous location installations varies between flow meter models. Consult the factory for specific flow meter approvals before any hazardous location instal- lation. For explosion proof installations, you must use solid metal conduit and follow NFPA (or your local code) approved wiring methods. Hot tapping must be performed by a trained professional. U.S. regulations often require
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Table of Contents Series 220/221 Instruction Manual 0-6 IM-22-C
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Series 220/221 Instruction Manual Chapter 1 Introduction Chapter 1 Introduction Innova-Flo™ Vortex Flow Meters The Sierra Instruments’ Series 220 In-Line and the Series 221 Insertion Innova-Flo™ Vortex Flow Meters provide a reliable solution for process flow measurement. From a single entry point in the pipeline, Innova-Flo meters offer precise measurements of mass or volumetric flow. The ve- locity sensor reduces the effects of pipeline vibration by incorporating a unique piezoelectric
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Chapter 1 Introduction Series 220/221 Instruction Manual Note and Safety Information We use note, caution and warning statements throughout this book to draw your attention to important information. Caution! Note Warning! This statement appears with This statement appears with This statement appears with a information that is important to information that is important short message to alert you to protect people and equipment for protecting your equipment an important detail. fr
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Series 220/221 Instruction Manual Chapter 1 Introduction How the Innova-Flo Vortex Flow Meter Operates Figure 1-1. Series 220 In-Line Vortex Flow Meter ™ Sierra Series 220 and 221 Innova-Flo Vortex Flow Meters use a unique velocity sensor head to monitor volumetric flow rate. The built-in flow computer calculates mass flow rate based on a constant value of fluid density stored in the instrument’s memory. To measure fluid velocity, the flow meter incorporates a bluff body (shedder
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Chapter 1 Introduction Series 220/221 Instruction Manual Vortex Shedding Frequency Von Karman vortices form downstream of a shedder bar into two distinct wakes. The vortices of one wake rotate clockwise while those of the other wake rotate counterclockwise. Vortices generate one at a time, al- ternating from the left side to the right side of the shedder bar. Vortices interact with their surrounding space by over-powering every other nearby swirl on the verge of development. Close to the
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Series 220/221 Instruction Manual Chapter 1 Introduction Flow Velocity Range To ensure trouble-free operation, vortex flow meters must be correctly sized so that the flow velocity range through the meter lies within the measurable velocity range (with acceptable pressure drop) and the linear range. The measurable range is defined by the minimum and maximum velocity using the following table. Gas Liquid 25 ft/s 3 ρ Vmin 1 ft/s English ρ (lb/ft ) Vmax 300 ft/s 30 ft/s 37
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Chapter 1 Introduction Series 220/221 Instruction Manual ™ As shown below, Innova-Flo Vortex Flow Meters exhibit a constant Strouhal number across a large range of Reynolds numbers, indicating a consistent linear output over a wide range of flows and fluid types. Be- low this linear range, the intelligent electronics in Innova-Flo automati- cally corrects for the variation in the Strouhal number. Innova-Flo’s smart electronics correct for this non-linearity by calculating the Rey- nolds nu
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Series 220/221 Instruction Manual Chapter 1 Introduction Flow Meter Configurations Innova-Flo™ Vortex Flow Meters are available in two configurations: • Series 220 in-line flow meter (replaces a section of the pipeline) • Series 221 insertion flow meter (requires a “cold” tap or a “hot” tap into an existing pipeline) Both the in-line and insertion configurations are similar in that they both use identical electronics and have similar sensor heads. Besides installa- tion differences, th
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Chapter 1 Introduction Series 220/221 Instruction Manual The meter includes a local 2 x 16 character LCD display housed within the enclosure. Local operation and reconfiguration is accomplished using six push buttons. For hazardous locations, the six push buttons can be operated through the sealed enclosure using a hand-held magnet, thereby not compromising the integrity of the hazardous location certification. The electronics include nonvolatile memory that stores all configuration in
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Series 220/221 Instruction Manual Chapter 2 Installation Chapter 2 Installation Installation Overview Innova-Flo™ meter installations are simple and straightforward. Both the Se- ries 220 In-Line and Series 221 Insertion type flow meter installations are covered in this chapter. After reviewing the installation requirements given below, see page 2-3 for Series 220 installation instructions. See page 2-6 for Series 221 installation instructions. Wiring instructions begin on page 2-19. Fl
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Chapter 2 Installation Series 220/221 Instruction Manual Unobstructed Flow Requirements Select an installation site that will minimize possible distortion in the flow profile. Valves, elbows, control valves and other piping components may cause flow disturbances. Check your specific piping condition against the ex- amples shown below. In order to achieve accurate and repeatable perform- ance install the flow meter using the recommended number of straight run pipe diameters upstream and dow
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Series 220/221 Instruction Manual Chapter 2 Installation Series 220 In-Line Flow Meter Installation Install the Series 220 In-Line Flow Meter between two conventional pipe flanges as shown in Figures 2-3 and 2-4. Table 2-1 provides the recom- mended minimum stud bolt lengths for wafer-style meter body size and dif- ferent flange ratings. The meter inside diameter is equal to the same size nominal pipe ID in schedule 80. For example, a 2” meter has an ID of 1.939” (2” schedule 80). Do
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Chapter 2 Installation Series 220/221 Instruction Manual Wafer-Style Flow Meter Installation Install the wafer-style meter between two conventional pipe flanges of the same nominal size as the flow meter. If the process fluid is a liquid, make sure the meter is located where the pipe is always full. This may require lo- cating the meter at a low point in the piping system. Note: Vortex flow me- ters are not suitable for two-phase flows (i.e., liquid and gas mixtures). For horizontal pipeli
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Series 220/221 Instruction Manual Chapter 2 Installation Flange-Style Flow Meter Installation Install the flange-style meter between two conventional pipe flanges of the same nominal size as the flow meter. If the process fluid is a liquid, make sure the meter is located where the pipe is always full. This may require lo- cating the meter at a low point in the piping system. Note: Vortex flow me- ters are not suitable for two-phase flows (i.e., liquid and gas mixtures). For horizontal pipe
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Chapter 2 Installation Series 220/221 Instruction Manual Series 221 Insertion Flow Meter Installation Prepare the pipeline for installation using either a cold tap or hot tap method described on the following pages. Refer to a standard code for all pipe tap- ping operations. The following tapping instructions are general in nature and intended for guideline purposes only. Before installing the meter, review the mounting position and isolation value requirements given below. Mounting Posi
