Multi-Trak™ Model 670S
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 Innovative and user-friendly HMI offers advances over industry- standard collector boxes and allows users to: •�Average the flow of 2-4 meters (and removes meters from the average under alarm or user selected conditions) • Convert flow units • Set up the density of the gas for mass flow measurement • Easily configure the individual meters • Set up alarms  Unique multiple transmitter approach allows individual points to be removed for service or repair without shutting down the system and allows users the ability to compensate for swirl  Direct mass flow monitoring eliminates the need for separate temperature and pressure inputs Accuracy +/- 1 % of reading plus 0.5% of full scale Patented Dry-Sense™ technology eliminates sensor drift State-of-the-art calibration facility ensures a highly accurate calibration that matches the application High temperature option to 750 °F (400 °C) available Low pressure hot taps available High-Performance Multi-Point Mass Flow Meter System For Large Ducts & Stacks For information online... www.sierrainstruments.com ierra'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. The Multi-Trak™ dynamically compensates for changes in the flow profile by using up to four independent mass flow sensing points to measure the instantaneous average gas mass flow velocity. The Multi-Trak™ is commonly used in petrochemical refining, coal-fired electric power generation, steel manufacturing and many other industrial processes that face the challenge of accurate and repeatable gas mass flow measurement in very large pipes or ducts. An innovative, versatile and user-friendly microprocessor-based Human Machine Interface (HMI) controls all functions of the Model 670S system. The HMI is used to collect, visualize and store flow data, as well as set up the individual sensor points, thus allowing the entire system to be easily configured in the field. The Multi-Trak™ HMI integrates the functions of flow measurement, flow-range adjustment, field validation and diagnostics, and displays mass flow rate and totalized flow, as well as other configuration variables. All of this data is easily programmable from the HMI's easy-to-use touch screen. The Multi-Trak™ system has major advantages over other multipoint systems. Unlike single probe insertion sensors where each sensor point is on the same insertion probe, each Multi-trak™ sensor point is completely independent of the others, allowing for easy field swapout or cleaning of individual transmitters. Because of this, Multi-trak™ sensors do not have to be located on the same plane, and can be

Hazardous-Area Location Enclosure Dimensional Specifications Compression Fitting—Side View (E2) Compression Fitting—Front View (E2) (Compressions Fittings) Length Chart Length Chart (Remote Mount Junction Box) NEMA 4X Dimensional Specifications Representative Daisy Chaining Units Per Customer Cable Length Requirement, 200 Feet Maximum Remote Mount Junction Box—Front View (E4) Remote Mount Junction Box—Side View (E4)

Performance Specifications Physical Specifications Accuracy of Point Velocity +/- 1% of reading + 0.5% of full scale Wetted Materials 316L stainless steel Repeatability +/- 0.2% of full scale Enclosure Hazardous-Area Location Enclosure (IP66) or NEMA 4X (IP65) Both are powder-coated cast aluminum Temperature Coefficient +/- 0.02% of reading per °F within +/- 50° F of customer specified conditions +/- 0.03% of reading per °F within +/- 50° F to 100° F of customer specified conditions +/- 0.04% of reading per °C within +/- 25° C of customer specified conditions +/- 0.06% of reading per °C...

Ordering the Model 670S First specify the Individual 640S Flow Meters: (i.e. 4x670S-NAA-L13-M1-EN2-P2-V4-NR-0-MB-HT) PARENT MODEL NUMBER 670S Muti-Trak™ Immersible Thermal Flow Meter AGENCY APPROVALS NAA Non-Agency Approved Meter CSA Explosion Proof for Class I, Division 1, Groups B, C, D ATEX II 2 GD Ex d IIC T6 ... T2; IP 66 T70 °C ... T280 °C FM Explosion Proof for Class I, Division 1, Groups B, C, D PROBE LENGTH L06 6-inches (15 cm) L09 9-inches (23 cm) L13 13-inches (33 cm) L18 18-inches (46 cm) L24 24-inches (61 cm) L36 36-inches (92 cm) L(in) Special Length (Length in Inches)...