Sierra 830 Series User manual

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Sierra Series 830/840/860
Side-Trak™and Auto-Trak™
Mass Flow Meters and Controllers
Instruction Manual
Part Number IM-83/84/86
Revision G.6 - 10/08
CORPORATE HEADQUARTERS
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www.sierrainstruments.com
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Table ofContents Series 830/840/860 Instruction Manual
0-2 IM-83/84/86-H
Customer Notice
Sierra Instruments, Inc. is not liable for any damage or personal injury, whatso-
ever, resulting from the use of Sierra Instruments standard mass flow meters or
controllers for oxygen gas. You are responsible for determining if this mass flow
meter or controller is appropriate for your oxygen application. You are responsible
for cleaning the mass flow meter or controller to the degree required for your oxy-
gen flow application.
© COPYRIGHT SIERRA INSTRUMENTS 1994
No part of this publication may be copied or distributed, transmitted, transcribed, stored in
a retrieval system, or translated into any human or computer language, in any form or by
any means, electronic, mechanical, manual, or otherwise, or disclosed to third parties
without the express written permission of Sierra Instruments. The information contained in
this manual is subject to change without notice.
TRADEMARKS
Side-Trak™, Auto-Trak™ and Cal-Bench™ are trademarks of Sierra Instruments, Inc.
Other product and company names listed in this manual are trademarks or trade names of
their respective manufacturers.
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Series 830/840/860 Instruction Manual Table of Contents
IM-83/84/86-H 0-3
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Table ofContents Series 830/840/860 Instruction Manual
0-4 IM-83/84/86-H
Table of Contents
Chapter 1 Introduction
Introduction..............................................................................1-1
Using this Manual...............................................................1-1
Safety Information..............................................................1-2
Receipt of System Components ..........................................1-2
Technical Assistance ..........................................................1-2
The Series 800 Flow Sensing Principle.....................................1-3
Chapter 2 Installation
Quick Installation Guide...........................................................2-1
Installation Overview ...............................................................2-2
Installing the Transducer ..........................................................2-3
Compression Fittings..........................................................2-3
VCO Fittings ......................................................................2-3
VCR Fittings ......................................................................2-4
NPT and 1/2-inch Fittings...................................................2-4
Wiring the Transducer..............................................................2-5
Recommended Wire Gauges...............................................2-5
Wiring Transducers with 20-Pin Card Edge Connectors .....2-6
Wiring Transducers with 15-Pin D Connectors .................2-10
Motor-Operated Valve Circular 10-Pin Connector ............2-14
Chapter 3 Operation
Mass Flow Meter Operation .....................................................3-1
Mass Flow Controller Operation...............................................3-2
Electromagnetic Valve Controllers .....................................3-2
Motor-Operated Rotary Valve Controllers ..........................3-3
Mass Flow Controller Features.................................................3-4
Over-Range and Cold Sensor Lockout Circuit ....................3-4
Controller Auto Shut-Off Feature .......................................3-4
On-Off Control and Soft Start Option .................................3-5
Valve Purge Function .........................................................3-6
Chapter 4 Maintenance
Flow Path Maintenance ............................................................4-1
Changing the Laminar Flow Element..................................4-1
Sensor Maintenance .................................................................4-6
Sensor Cleaning and Inspection ..........................................4-6
Sensor Electrical Test .........................................................4-7
Valve Maintenance...................................................................4-8
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Series 830/840/860 Instruction Manual Table of Contents
Electromagnetic Valves -Low and Medium Flow.....................4-8
Electromagnetic Valves - High Flow..............................................4-9
Motor-Operated Rotary Valves..................................................... 4-11
Valve Adjustment..................................................................4-12
Transducer Calibration....................................................................4-15
Chapter 5 Troubleshooting
Troubleshooting Procedures....................................................................5-1
Frequently Asked Questions ...................................................................5-4
Returning Equipment to the Factory.............................................................5-7
Appendix A Conversion Formulas and Gas Tables
Appendix B Production Specifications
List of Figures
1-1. Flow Paths through the Transducer............................... 1-3
1-2. Flow Measuring Principle............................................... 1-3
1-3. Sensor Temperature Distribution.................................... 1-4
1-4. Linear Range of the Transducer’s Output Signal .......... 1-4
2-1. Piping Requirements for NPT & 1/2-inch Connections...... 2-3
2-2. Input Power Connections (20-Pin Connector) .....................2-5
2-3. Output Signal Connections (20-Pin Connector)...................2-5
2-4. Local Command Set Point (20-Pin Connector)......................2-6
2-5. External Command Set Point (20-Pin Connector) ............... 2-6
2-6. 15 Volt Valve Purge and Off (20-Pin Connector)..................2-7
2-7. 30 Volt Valve Purge and Off (20-Pin Connector)..................2-7
2-8. Input Power (15-Pin D Connector).....................................2-8
2-9. Output Signal (15-Pin D Connector) ..................................2-8
2-10. Local Command Set Point (15-PinD Connector).................2-9
2-11. External Command Set Point (15-Pin D Connector)..............2-9
2-12. 15 Volt Valve Purge and Off (15-Pin D Connector)............2-10
2-13. 30 Volt Valve Purge and Off (15-Pin D Connector)............2-10
2-14. Motor-Operated Valve Circular 10-Pin Connector ..............2-11
3-1. Soft Start Response Times............................................... 3-5
4-1. Low Flow Transducer LFE Cleaning............................... 4-2
4-2. Medium Flow Transducer LFE Cleaning......................... 4-3
4-3. High Flow Transducer L F E Cleaning....................................4-4
4-4. NPT Transducer LFE Cleaning...........................................4-5
4-5. Sensor Wire Access ............................................................4-7
4-6. Transducer Potentiometers Used for Calibration................4-12
List of Tables
2-1. Recommended Wire Gauges ................................................. 2-4
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Table ofContents Series 830/840/860 Instruction Manual
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Series 830/840/860 Instruction Manual Table of Contents
IM-83/84/86-H 0-7
Warnings and Cautions
Warning! Follow National Electric Code or your local code safety practices when wiring
or connecting this unit to a power source. Only qualified personnel should installand wire
the transducer.
Warning! Always remove main power before disassembling the transducer.
Caution! During operation, the mass flow controller valve becomes hot.
Caution! Do not use the manual purge function when RS-485 is active (Model
860 only).
Caution! Always fully neutralize any toxic gas trapped inside the transducer before re-
moving from the gas line.
Caution! Only qualified personnel should perform transducer service, calibration or
troubleshooting procedures.
Caution! Printed circuit boards are sensitive to electrostatic discharge. To avoid damag-
ing the board, follow these precautions to minimize the risk of damage:
•before handling the assembly, discharge your body by touching a grounded, metal
object
•handle all cards by their edges unless otherwise required
•when possible, use grounded electrostatic discharge wrist straps when handling
sensitive components
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Series 830/840/860 Instruction Manual Chapter 1 Introduction
IM-83/84/86-H 1-1
Chapter 1 Introduction
Sierra’s Side-Trak™and Auto-Trak™mass flow meters and con-
trollers are designed to accurately measure and control flows of
process gases. This instruction manual covers the installation, op-
eration and maintenance of the entire Side-Trak and Auto-Trak
product lines, which include the following Sierra models:
•830 Side-Trak Mass Flow Meter
•840 Side-Trak Mass Flow Controller
•860M Auto-Trak Mass Flow Meter with RS-485 interface
•860C Auto-Trak Mass Flow Controller with RS-485 interface
Sierra’s mass flow meters and controllers offer a broad range of sizes,
control electronics, process connections, cables and connectors for
flexibility and versatility. The meter’s patented straight sensor tube
with access ports permits easy cleaning and reduces maintenance
down-time. The platinum sensor eliminates zero-drift and ensures
long-term repeatability. The primary standard calibration ensures
starting point accuracy and NIST traceability. All wetted surfaces are
constructed of 316 stainless steel with Viton®seals standard. Control-
lers incorporate either an electromagnetic valve (up to 500 slpm) or a
motor-operated rotary valve (100 slpm to 200 scfm). The Auto-Trak
860 digital microprocessor features automatic bridge-balancing cir-
cuitry and provides simultaneous analog and digital RS-485 commu-
nication.
Using This Manual
This manual is organized into five chapters:
•Chapter 1 includes the introduction and theory of operation
•Chapter 2 provides installation and wiring instructions
•Chapter 3 describes system operation and controller features
•Chapter 4 covers maintenance and calibration procedures
•Chapter 5 provides troubleshooting advice
Gas tables and conversion formulas are found in Appendix A. The
product specifications and dimensional drawings are found in Ap-
pendix B.
The Model 860 Auto-Trak RS-485 communications program in-
cludes an “Auto-Net” Software Addendum as a supplement to this
manual. Please refer to this addendum for all RS-485 operating in-
structions.
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Chapter 1 Introduction Series 830/840/860 Instruction Manual
1-2 IM-83/84/86-H
Throughout this manual, we use the word transducer as a ge-
neric term to represent all Side-Trak and Auto-Trak mass flow
meters and controllers.
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