Instruction manual

Instruction Manual Smart-Trak
®
50 Series
IM-50 Rev. A.2 9
Chapter 2: Installation
Before You Begin Installation
Before installing the instrument, ensure that the installation site conforms to the
specific operating parameters recorded on the instrument’s Data Label. The Data
Label is located on the back of the instrument electronics enclosure. This is
critical because each instrument is configured for a specific application range.
Please review the gas, the mounting orientation, the maximum flow range, the
inlet and outlet pressure and the operating temperature. The line pressure should
not exceed 145 psig (10 barg). The temperature should not exceed 122°F (50°C).
The minimum operating temperature is 32°F (0°C) and ambient temperature is 0-
50°C. If your application exceeds any of these parameters, contact your Sierra
Sales Agent before installation. You may also contact one of Sierra’s Technical
Support Centers listed on Page 5 of this manual.
Installation Check List
1. Double-check to be sure that the O-ring material used in your instrument is
compatible with the gas to be measured. The O-ring material used in your
Smart-Trak
®
50 Series is Viton. See Appendix A for a table of elastomer
compatibility with a wide variety of gases.
2. Sierra strongly recommends you install an in-line filter upstream of the
instrument. Recommended filter size: 10 micron. A 10 micron filter will
eliminate the possibility of sensor tube clogs, maximizing the life of the unit and
accuracy of the calibration. A 10 micron filter is available from Sierra as an
accessory. See Appendix B or contact your local Sierra distributor.
3. Do not place the instrument in areas subject to sudden temperature changes,
excessive moisture or near equipment radiating significant amounts of heat.
Be sure to allow adequate space for cable connectors and wiring.
4. For controllers, use a properly sized pressure regulator. Make sure the
pressure regulator is not too small or too big. There can be no restrictions (such as
valves, tubing or pipe internal diameters, reducers, etc.) upstream or downstream
of the controller with a dimension that is less than the valve orifice diameter. To
determine orifice diameter, consult the factory for further information. If
restricted, controller will not reach full scale.
Warning!
Injury can result if line
pressure exceeds the
maximum rating of
145 psig (10 barg).