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™
Sierra Series 730 Accu-Mass
Mass Flow Meters
Instruction Manual
Part Number IM-73-AM
Revision E 05/04
5 Harris Court, Building L Monterey, CA 93940
(831) 373-0200 (800) 866-0200 Fax (831) 373-4402
http://www.sierrainstruments.com
Sierra Instruments b.v. Bolstoen 30A 1046 AV Amsterdam The Netherlands
+31(0)20-6145810 Fax +31(0)20-6145815
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Customer Notice Sierra Instruments, Inc. is not liable for any damage or personal injury, whatsoever, resulting from the use of Sierra Instruments standard mass flow meters for oxygen gas. You are responsible for determining if this mass flow meter is appropriate for your oxygen application. You are responsible for cleaning the mass flow meter to the degree required for your oxygen flow application. © COPYRIGHT SIERRA INSTRUMENTS 1994 No part of this publication may be copied or distributed, tra
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Series 730 Instruction Manual Table of Contents Series 730 Mass Flow Meters...........................................................3 Safety Information..........................................................................4 Receipt of Components...................................................................4 Technical Assistance.......................................................................4 Installation Overview..................................................................
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Series 730 Instruction Manual Warnings and Cautions Warning! All wiring procedures must be performed with the power Off. Caution! All flow meter connections and fittings must have the same or higher pres- sure rating as the main pipeline. Caution! Do not connect power to the 4-20 mA terminals. Caution! Before attempting any flow meter repair, verify that the line is de-pressurized. Caution! Always remove main power before disassembling any part of the flow meter. Caution! Printed circuit boards
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Series 730 Instruction Manual Series 730 Mass Flow Meters ™ Sierra’s Series 730 Accu-Mass Flow Meters provide outstanding measurement accuracy and fast 200 millisecond response time. The meters monitor the mass flow rate of air and process gases in ranges from 0 to 250 scfm. They are available in pipe sizes from 1/4-inch to 3 inches. Accu-mass meters are ideal for monitoring flows of non- corrosive gases compatible with the device’s wetted materials and ap- plications requiring fast time respons
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Series 730 Instruction Manual Safety Information We use caution and warning statements in this book to draw your at- tention to important information. Caution! Warning! This statement appears with information that is This statement appears with information that important to protect people and equipment from is important for protecting your equipment damage. Pay very close attention to all warn- and performance. Read and follow all cau- ings that apply to your application. tions that apply to you
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Series 730 Instruction Manual Installation Overview When selecting an installation site, make sure that: 1. Line pressure and temperature will not exceed the flow meter rating. Temperature should not vary more than 120°F (50°C) from the calibration temperature. Line pressure should not vary more than 50 psi (3.4 bar) around the calibrated pressure. 2. The ambient temperature falls within the limits of: 32°F (0°C) to 120°F (50°C). 3. The location meets the required minimum number of pipe di-
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Series 730 Instruction Manual 10 D 5 D 10 D 5 D Flow Flow Flow meter Flow meter Reduction before meter One 90° elbow before meter 15 D 5 D 20 D 5 D Flow meter Flow Flow Flow meter Two 90° elbows before meter in one plane Expansion before meter 25 D 10 D 25 D 10 D Flow Flow meter Flow Flow meter Two 90° elbows before meter out Regulator or valve partially closed before meter of plane (if three 90° bends present, (If valve is always wide open, base length double recommended length) require
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Series 730 Instruction Manual Wiring Connections - NEMA 2 CE Enclosures NEMA 2 enclosures are supplied with a 6-pin connector for direct connection to the supplied mating connector. The pin designations Warning! are given in Figure 3 below. Connect 15 VDC input power (300 mA All wiring procedures load, maximum) to pin 1 and power ground to pin 5. See “Output Sig- must be performed with the power Off. nal Wiring” for signal wiring instructions. •Female Cable Socket Mating Connector (Female Solder
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Series 730 Instruction Manual Output Signal Wiring All flow meters are equipped with either a calibrated 0–5 VDC, 0–10 VDC or 4–20 mA output signal. These linear output signals represent 0 to 100% of the flow meter user full scale. DC Output Wiring The 0-5 VDC or 0-10 VDC output signal can drive a minimum load of 1000 Ohms. For 0-5 VDC or 0-10 VDC connections, connect to the terminals marked Output signal and Signal ground. 4–20 mA Output Wiring The 4-20 mA current loop output is self-powered (n
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Series 730 Instruction Manual Problem Possible Cause Solution Flow measurement is Very erratic or non-uniform flow Follow installation requirements erratic or fluctuating shown in Figure 2 Flow meter installed with less than re- Follow installation requirements quired minimum pipe diameters up- shown in Figure 2 stream and downstream of the sensor Probe is not secured to a solid base Secure probe to a non-vibrating solid mount Sensor component broken Return to factory for replacement Malfunction
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Series 730 Instruction Manual Returning Equipment to Factory Before returning any mass flow meter to the factory, you must com- plete a Sierra Calibration/Repair Data Sheet. You may download the data sheet to your computer by visiting the Sierra website at www.sierrainstruments.com. Or, contact Customer Service at: service@sierrainstruments.com (Email) or, (800) 866-0200 or (831) 373-0200 in the US, or +31(0)20-6145810 in Europe. Return shipments to: USA Headquarters Sierra Instruments Service D
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Series 730 Instruction Manual Product Specifications Operating Specifications Gases Most non-combustible, non-corrosive gases Mass Flow Rates (1) Mass Flow Rate for Air NPT Size Minimum Range Maximum Range 1/4-inch 0–0.035 scfm 0–4.5 scfm 1/2-inch 0–0.5 scfm 0–12 scfm 3/4-inch 0–1 scfm 0–25 scfm 1 1/4-inch 0–2 scfm 0–50 scfm 2-inch 0–5 scfm 0–125 scfm 3-inch 0–10 scfm 0–250 scfm (1) Contact factory for ranges of other gases Gas Pressure 150 psig (10 barg)* *Maximum gas pressure is determined by
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730/600 WIRING CONNECTIONS No#. Color Signal 1 Black Sig. Ground Blue Hi Rose Connector 2 White Signal Female Mating Connector 1 6 3 Red DC input Power Solder Side 4 N/C 5 N/C 2 7 5 6 Green Power Ground 7 (Brown or Orange) (Bridge) 4 3 7 No#. Color Signal 1 1 Black Sig. Ground Black Connector 2 White Signal 6 Female Mating Connector 3 Red DC input Power 2 Solder Side 4 N/C 5 N/C 5 6 Green
