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Series 820 Instruction Manual Chapter 1 Introduction
IM-82-C 1-1
Chapter 1 Introduction
This instruction manual covers the installation, operation and main-
tenance of SierraÕs 820 Series product line including the following
Top-Trak
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Models:
· 822 Mass Flow Meter with display (nylon flow body)
· 824 Mass Flow Meter without display (nylon flow body)
· 826 Hi-Flow Meter with display (aluminum flow body)
· 827 Hi-Flow without display (aluminum flow body)
· 822-S Mass Flow Meter with display (stainless steel flow body)
· 824-S Mass Flow Meter without display (stainless steel flow body)
SierraÕs Top-Trak
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Mass Flow Meters are designed for precise
measurement of gas mass flow. The 820 Series offers a broad range
of sizes and process connections for flexibility and versatility. The
primary standard calibration ensures starting point accuracy and
NIST traceability. The meterÕs 0-5 VDC or 4-20 mA output signal is
provided for recording, data-logging or control. The optional dis-
play reads the mass flow rate directly in engineering units or per-
centage of full scale.
Using This Manual
This manual is organized into four chapters:
· Chapter 1 includes the introduction and theory of operation
· Chapter 2 provides installation and wiring instructions
· Chapter 3 describes transducer operation and features
· Chapter 4 covers maintenance, calibration and troubleshooting
Gas tables and conversion formulas are found in Appendix A.
The product specifications and dimensional drawings are found
in Appendix B.
Throughout this manual, we use the word transducer as a generic
term to represent all models of SierraÕs 820 Series Top-Trak
Mass Flow Meters.