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Smart-Trak 50 Series

Sierra Instruments’ Smart-Trak® 50 Series is a digital gas mass flow controller designed to meet the low-cost budgetary requirements of OEM's while maintaining excellent quality and performance. Inspired by the need for accurate and reliable gas mass flow control at an OEM price, the 50 Series delivers by building on the same core sensor, LFE and valve technology found in our award-winning Smart-Trak 100 Series, all backed by industry best off-the-shelf fast product delivery and Sierra's style of personalized customer support. Our 50 Series has a standard accuracy of +/- 1.5% of full scale. The flexible and powerful direct-acting control valve sets it apart from the competition by minimizing leak-by, while offering a 300 msec response time to setpoint changes at +/- 0.25% repeatability.

It is our philosophy that core sensor technology must be of the highest quality and performance to make an excellent MFC. In contrast to the many wetted parts of CMOS and MEMS flow sensors, Sierra uses its most advanced 316L stainless steel platinum-wound capillary sensor technology ensuring the very best mass flow control for nearly any clean gas. As a result, the 50 Series shares the same advanced sensor as the flagship Smart-Trak 100 Series, while incorporating a slightly varied valve and laminar flow element design also inspired by the original Smart-Trak. A more efficient manufacturing process, a streamlined design, and our partnership with a very strong supplier base combined to make the 50 Series a reality.

FAST DELIVERY: The 50 Series boasts one of the best delivery lead times in the industry. Seven of the most popular flow ranges between 0 to 20 sccm (nlpm) to 0 to 50 slpm (nlpm) are in stock for delivery in days, not weeks. If a flow range is not in stock, we will expedite any flow range required or ship with standard delivery in 2-3 weeks.

Experience our passion for flow with the 50 Series in your next application.

» Mass Flow Meter Selection Chart
» Mass Flow Controller Selection Chart

The result of over five years of your feedback, our next generation flow meter gives you unprecedented control, independence and flexibility.

We have advanced the science of our direct-acting control/shut-off valve by using proprietary Frictionless-Hovering Technology, allowing you to smoothly control gas mass flow over a wide range of temperature and pressure

Now, you can adjust calibration in the field for any of the 10 pre-programmed Dial-A-Gas gases independently. The user-friendly Pilot module (mounted or hand-held) lets you view and change a wide variety of critical control functions.

Add Sierra’s new Compod and Smart Trak 2 becomes a truly intelligent flow controller that simplifies flow control installations and expands networking capabilities.

Smart-Trak 2 features Dial-A-Gas® technology for true digital performance in up to ten pre-programmed gases with the same unit (gas type list can be programmed on request). Another unique factor of the Model 100 is the pilot module which replaces expensive control/readout electronics and is available mounted to the face of the instrument or in a convenient hand-held version.

At Sierra, we are confident that our Model 100 mass flow meter will pass your most demanding tests, delivering the accuracy you need whether you monitor the flow of air or other common gasses. Whether you are making your first mass flow meter purchase or replacing an older thermal meter, the charts below will help you decide which type of Smart-Trak 2 is the right fit for your needs.

Add the Compod upgrade and get multi-drop RS-485/MODBUS RTU communications

Unique Mass Flow Meter Specs & Features

• Accuracy of +/- 1% of full scale
• Accuracy of +/- 0.5% of full scale
• 316 stainless steel construction
• Flow ranges from 0 to 10 sccm to 0-1000 slpm.
(for flows less than 10 sccm reffer to Micro-Trak Model 101)
• Fast-response control valve
• True digital performance with great flexibility
• “Primary Standard” calibration& NIST traceability
• Dial-A-Gas® Technology
• 10 pre-programmed gases come standard
• Substitute up to 9 gases of your own
• Unique pilot module allows these control functions:

• Gas type
• Setpoint value
• Setpoint source
• Engineering units
• Output signal
• Valve state (open, closed or automatic)
• Full scale value
• Zero Value
• Span Value

• Control functions also available from PC via RS-232
• Traditional analog control also included

• 4-20 mA
• 0-5 Vdc
• 0-10 Vdc
• 1-5 Vdc

• Source code for RS-232 communication provided
• Multi-drop RS-485/MODBUS RTU (Using Compod)
• Small footprint makes drop-in replacement easy
• Single-sided 24 Vdc power supply
• CE approval