Sierra Instruments
Sierra has the widest program in thermal mass flow of gas. The advantage of using mass flow is that it is the mass that is measured so that it is not as necessary to compensate for pressure and temperature changes. Sierra’s program includes flow meters and flow control units for air and process gas. Over the past 20 years, Sierra has patented several new concepts and developed several unique products within thermal mass flow meters of the capillary tube type. The thermal mass flow meters / controllers can measure and control mass flow up to 1000 slpm.
Premium Digital Gas Mass Flow Meters & Controllers
Today’s Most Advanced Mass Air Flow Sensors, Controllers and Flow Meters
Datasheets
 |
Smart-Trak® 2 Model 100 Mass Flow Meters & Controllers Digital high performance, stainless steel with Dial-A-Gas® Technology & computer control. Flow ranges from 0 to 15 sccm to 0 to 1000 slpm. |
Datasheet | Manual |
 |
SmartTrak® 140 Ultra-Low ?P Mass Flow Controllers Provides precise mass flow control for expensive process gases, where minimal pressure drop is a key consideration for cost savings and efficiency. Controls up to 500 slpm (nlpm) with an ultra-low ?P of 4.5 psid (310 mBard); Accuracy /- 1.0% of full scale; 316 stainless steel construction; CE Approved. |
Datasheet | Manual |
 |
Compod™ Programmable Control Module Add Compod to any 100 Series model to get multi-drop RS-485/MODBUS RTU. With MODBUS, multiple instruments can be daisy-chained over a single network. |
Datasheet | Manual |
 |
Micro-Trak™ Model 101 Ultra Low Flow Mass Flow Meters & Controllers Specifically designed for flow ranges under 4 sccm (smlm) with a minimum controllable mass flow rate of 0.1 sccm (smlm). Also get digital high performance, stainless steel construction with Dial-A-Gas® Technology & computer control. |
Datasheet | Manual |
 |
Max-Trak® Model 180 Industrial Mass Flow Meters & Controllers Industry’s only NEMA 6/IP67 truly industrial MFC; Available as heavy industrial flanged version; Accuracy of /- 1% of Full Scale and flow ranges from 0 to 10 SLPM to 0 to 1000 SLPM |
Datasheet | Manual |
Economical/OEM Gas Mass Flow Meters and Controllers
Digital & Analog, All Gases, /- 1.5% FS Accuracy, 316 SS or Aluminum
 |
Digital: Smart-Trak 50 Series Mass Flow Meters & Controllers Rapid off-the-shelf delivery lead-times; Constructed from your choice of 316SS or aluminum; Accuracy of /- 1.5% of full scale and flow ranges from 0-10 sccm to 0-50 slpm, RS-232, RS-485, small footprint, CE approved. |
Datasheet | Manual |
 |
Mass-Trak® Model 810C Mass Flow Controllers with display Inexpensive nylon MFC with available large tiltable LCD readout for use with ALL inert gases. Accuracy of /- 1.5% of full scale and flow ranges from 0-10 sccm to 0-50 slpm. |
Datasheet | Manual |
 |
Top-Trak® Model 822/824 Mass Flow Meters Inexpensive nylon MFM’s with available large tiltable LCD readout for use with ALL inert gases. Accuracy of /- 1.5% of full scale and flow ranges from 0-10 sccm to 0-50 slpm. |
Datasheet | Manual |
 |
Top-Trak® Model 826/827 High Flow Mass Flow Meters Inexpensive aluminum MFM for higher flows of ALL inert gases with available large tiltable LCD readout. Accuracy of /- 1.5% of full scale and flow ranges from 0-75 slpm to 0-175 slpm. |
Datasheet | Manual |
Analog Mass Flow Meters & Controllers
Traditional Analog Mass Air Flow Sensors, Controllers and Flow Meters
 |
Side-Trak® Model 840 Traditional Analog Stainless Steel Mass Flow Controllers An accurate and reliable stainless steel MFC with a wide flow range. Accuracy of /- 1% of full scale and flow ranges from 0-10 sccm to 0-5600 slpm. |
Datasheet | Manual |
 |
Side-Trak® Model 830 Traditional Analog Stainless Steel Mass Flow Meters An accurate and reliable stainless steel MFM with a wide flow range. Accuracy of /- 1% of full scale and flow ranges from 0-10 sccm to 0-5600 slpm. |
Datasheet | Manual |
 |
Top-Trak® Model 822S & Model 824S Econimical Analog Stainless Steel Mass Flow Meters A value-priced, stainless steel MFM with available large tiltable LCD readout. Accuracy of /- 1.5% of full scale ( /-1% of FS optional) and flow ranges from 0-10 sccm to 0-500 slpm. |
Datasheet | Manual |
 |
Flo-Box™ Model 951 & 954 Digital Control/Readout and Power Supply Systems The 950 Series includes a compact, single channel device and a deluxe, multi-channel device for operation of up to four mass flow instruments. The 950 Series is designed for use with the Sierra Model 830L, 830M, 840L and 840M instruments, but can be used on any brand of MFM or MFC. |
Datasheet | Manual |
Light-Industrial Thermal Mass Flow Meters
Thermal Air Flow Meters for Light-Industrial Products
 |
QuadraTherm™ 780i Inline Mass Flow Meter Best Accuracy: /- 0.5% of reading above 50% of full scale; inline version with built-in flow conditioning; multivariable outputs, flow ranges up to 60,000 sfpm (305 smps), iTherm™ Dial-A-Gas®, Dial-A-Pipe, Hazardous Area approvals, Digital Communications (pending) |
Datasheet | Manual |
 |
QuadraTherm™ 640i Insertion Mass Flow Meter Accuracy: /- 0.75% of reading above 50% of full scale; 3/4″ (19.1 mm) insertion probe up to 72″ (2m) long, multivariable outputs, flow ranges up to 60,000 sfpm (305 smps), iTherm™ Dial-A-Gas®, Dial-A-Pipe, Hazardous Area approvals, Digital Communications (pending) |
Datasheet | Manual |
 |
Boiler-Trak™ Smart Insertion Gas Flow Meter Boiler-Trak™ is designed to provide an economical and easy to install solution for natural gas or propane measurement to heaters and boilers and is optimized for greenhouse gas measurement. Product accuracy is ± 1% of full scale and the flow range is 80 to 1600 SCFM (natural gas) with standard accuracy |
Datasheet | Manual |
|
Fast-Flo™ Model 620S NEMA 4X (IP65) Insertion Mass Flow Meter A 200 msec fast time-response microprocessor-based transmitter in a NEMA 4X (IP65) enclosure. Product accuracy is ± 1% of full scale and the flow range is up to 20,000 sfpm (air) with standard accuracy. |
Datasheet | Manual |
Heavy Industry Thermal Mass Flow Meters
#1 Selling Thermal Mass Flow Meter in North America
 |
Steel-Mass™ Model 640S Insertion Mass Flow Meter Accurate and repeatable, this product is a rugged and reliable mass flow measurement workhorse in heavy industrial applications. Product accuracy is ± 1% of reading 0.5% full scale, and the flow range is up to 20,000 sfpm (air) with standard accuracy. It inserts easily into ducts and pipes to monitor total gas mass flow rate and is optimized for greenhouse gas measurement. |
Datasheet | Manual |
 |
Multi-Trak™ Model 670S High-Performance Multi-Point Flow Meter for Large Ducts and Stacks Sierra’s Multi-Trak™ Model 670S is an advanced state-of-the-art instrument for measuring mass flow rates in very large ducts or stacks that have non-uniform velocity profiles, high turn-down requirements, dirty gas streams, wide temperature ranges and fast velocity and temperature changes. |
Datasheet | Manual |
 |
Flat-Trak™ Model 780S In-line Mass Flow Meter with Flow Conditioning Like its cousin the Model 640S, the Flat-Trak Model 780S provides repeatable, rugged, and reliable performance. Additionally, the product features Sierra’s flow conditioning elements. Product accuracy is ± 1% of reading 0.5% full scale, and the flow range is up to 20,000 sfpm (air) with standard accuracy. The Model 780S is also optimized for greenhouse gase measurement. |
Datasheet | Manual |
 |
Ultra High Purity Model 780S UHP In-line Mass Flow Meter with Flow Conditioning This model is the industry choice for gas distribution in ultra-clean processes. This product features 316L electropolished tubing with 7-10 Ra or 20-25 Ra interior finishes. |
Datasheet | Manual |
 |
ChlorineTrak™ 760S In-line Mass Flow Meter. A special version of the 780S, the ChlorineTrak 760S is specifically designed as a cost-effective mass-flow measurement solution for chlorine injection processes found in typical waste-water treatment applications. Product accuracy is /- 5% of full scale, and the flow range is up to 300 scfm chlorine in a 4” Kynar® flow body. |
Datasheet | Manual |
 |
Flow-Trak™ Dual-Plate Flow Conditioning Element As used in our Model 780S products, flow conditioning elements represent an economical solution to problems associated with monitoring flow installations where long, straight runs of piping are not available. |
Datasheet |
Innova-Sonic® Transit-Time Ultrasonic Liquid Flow Meters
 |
Innova-Sonic® Model 203 Economical Clamp-On Ultrasonic Water Flow Meter for Accurate Results | Datasheet | Manual |
 |
Innova-Sonic® Model 210i Portable Liquid Flow Meter A non-invasive portable transit-time ultrasonic flowmeter for the detection of the volumetric flow rate of most liquids. |
Datasheet | Manual |
 |
Innova-Sonic® Model 207i Ultrasonic Liquid Flow Meter With Thermal Energy/BTU Capability.
•High accuracy transit-time ultrasonic technology |
Datasheet | Manual |
Multivariable Mass Vortex
Gas, Liquid and Steam (Saturated & Superheated)
 |
Innova-Mass® Model 240 In-line Multivariable Mass Vortex Flow Meter Provides a direct reading of FIVE process parameters at the same time. Low maintenance, easy installation, and great configuration flexibility. Product mass flow measurement accuracy is ± 1% of rate for liquids and 1.5% of rate for gases and steam over a 30:1 range. |
Datasheet | Manual (240V) Manual (loop) |
 |
Innova-Mass® Model 241 Immersible Multivariable Mass Vortex Flow Meter Provides a direct reading of FIVE process parameters at the same time in process pipe sizes up to 72 inches. Low maintenance, easy installation, and great configuration flexibility. Product mass flow measurement accuracy is ± 1.5% of rate for liquids and 2% of rate for gases and steam over a 30:1 range. |
Datasheet | Manual |
 |
InnovaMass® 240 Inline Cryogenic Ultra-Low Temperature Multivariable Mass Vortex Flow Meter Cryogenic version measures liquid oxygen, nitrogen, argon, and carbon dioxide down to -330°F (-200°C) to provide an advanced and reliable measurement system to the liquefied gas measurement market. Provides a direct reading of mass flow rate, volumetric flow rate, temperature, and density. Low maintenance, easy installation, and great configuration flexibility. Product mass flow measurement accuracy is ± 1.0% of rate for cryogenic liquids over a 30:1 range. |
Datasheet | Manual |
Volumetric Vortex Flow Meters
Gas, Liquid and Steam (Saturated & Superheated
|
Innova-Flo® Model 240V In-line Vortex Flow Meter Sierra’s Model 240V Innova-Flo provides a direct reading of volumetric flow for liquids, steam or constant density gases. Product accuracy is ± 1% of rate for liquids and 0.7% of rate for gases and steam over a 30:1 range. |
Datasheet | Manual |
|
Innova-Flo® Model 241V Immersible Vortex Flow Meter Model 241V Innova-Flo provides a direct reading of volumetric flow for liquids, steam or constant density gases. The unique insertion design may be used in process piping from 2-inches up to 72-inches. Product accuracy is ± 1.2% of rate for liquids and 1.5% of rate for gases and steam over a 30:1 range. |
Datasheet | Manual |
|
InnovaMass® 240 Cryogenic Multivariable Mass Vortex Flow Meter Cryogenic version measures liquid oxygen, nitrogen, argon, and carbon dioxide down to -330°F (-200°C) to provide advanced and reliable measurement system to the liquefied gas measurement market.Provides a direct reading of mass flow rate, volumetric flow rate, temperature, and density. Low maintenance, easy installation, and great configuration flexibility. Product mass flow measurement accuracy is ± 1.0% of rate for cryogenic liquids over a 30:1 range. |
Datasheet | Manual |
Heavy Industry Flow & Level Switch
Today’s Most Advanced Mass Air Flow Sensors, Controllers and Flow Meters
> |
Flow Switch for Gases & Liquids Switches on a flow/no flow condition in both gases and liquids. Flow Switch range of 0.01 to 5 fps in liquids and 0.1 to 500 fps gases. Response Time of 0.5 to 10 seconds (media dependent) Wide operating temperature range of -100F to 390F (-70C to 200C) CE, CENELEC and CSA approvals. |
Datasheet | Manual |
 |
Level Switch for Liquids Indicates liquid level in tanks and process vessels. Switches on level change of 0.03 inch (dry to wet and wet to dry) Response Time: 0.1 to 1 second (media dependent). Wide operating temperature range of -100F to 390F (-70C to 200C). CE, CENELEC and CSA approvals. |
Datasheet | Manual |
 |
High Temperature Flow Switch; Up to 850F Designed for medium and high temperature applications. Medium Temperature to 300C (572F) ; High temperature to 485C (850F). Optional remote electronics for use in medium and Hi T environments. Switches on a flow/no flow condition in both gases and liquids. Flow Switch range of 0.01 to 5 fps in liquids and 0.1 to 500 fps gases. Response Time of 0.5 to 10 seconds (media dependent). CE, CENELEC and CSA approvals. |
Datasheet | Manual |
 |
Sanitary Flow Switch Designed for use in sanitary applications including food, beverage and pharmaceutical applications. 3-A Authorization No. 950 issued by the 3-A Sanitary Standards symbol Administrative Council. Switches on a flow/no flow condition in both gases and liquids. Flow Switch range of 0.01 to 5 fps in liquids and 0.1 to 500 fps gases. Response Time of 0.5 to 10 seconds (media dependent) Wide operating temperature range of -100F to 390F (-70C to 200C) 3A approval. |
Datasheet | Manual |
