Thermatel® Enhanced Model TA2 Thermal Mass Flow Meter D E S C R I P T I O N The Thermatel® Enhanced Model TA2 Thermal Mass Flow Meter provides reliable mass measurement for air and gas flow applications. The powerful, yet easy to use, electronics are contained in a compact explosion proof enclosure. The TA2 is available with both insertion probes as well as flow body design for smaller pipe sizes. The TA2 offers excellent performance at an exceptional value. T E C H N O L O G Y F E A T U R E S • Direct mass flow measurement of air and gases • High turndown ratios • Excellent low flow sensitivity • Low pressure drop • ISO 17025 and NIST traceable calibrations • Calibration Verification in the field E L E C T R O N I C S F E A T U R E S • Compact explosion proof/Type 4X enclosure, mounted either integrally on the probe or at a remote location • All 316 welded stainless steel and Hastelloy® C-276 construction • Selection of process connections, including threads, welded flange construction, and use with a compression fitting • Process temperatures up to +400 °F (+200 °C) • Pressure rating to 1500 psig (103 bar) dependent upon process connections • Optional pulse output plus second mA output which can be used for temperature or different flow range (mA output passive connection only) • Unique sensor design permits higher mass flow rates yet maintains equivalent thermal mass for varying temperature operation • HART communications with AMS and DTMs available • Optional hot tap retractable probe assembly • 2-line ¥ 16-character backlit display with four pushbuttons for ease of configuration • Rotatable housing • Two calibration curves optional as well as field adjustment for different gases • Language selections of English, German, French, Spanish, and Russian • Vent lines/Flares

• 1⁄2" to 4" pipe sizes • NPT threads available up to 2" in size • Stainless steel and carbon steel (with stainless steel sensor) construction • Flange connections for all sizes • Optional stainless steel flow conditioning plate for 1.5" and higher • Flow conditioning for 1⁄2" to 1" based on upstream length and sensor design TOTALIZER Two 7-digit flow totalizers, one resettable and one non-resettable are provided. Flow units selectable in user’s choice of engineering units. Totalizer data is electronically stored eliminating the need for backup batteries and provides maximum safeguard data in...

PROBE INSTALLATION Probes can be provided with a variety of process connections, including threads, flanges, or installation through a compression fitting. The sensor will fit pipe sizes of 11⁄2" diameter or larger (2" minimum size with thread connection). The sensor is protected to prevent damage due to “bottoming-out” if inserted too far into a pipe. PULSE OUTPUT The optional pulse output provides a pulse output equivalent to user selected units and multiplier factor. Both active (power from the TA2) or passive (external power supply) connections are provided to match the user’s interface....

T E C H N O L O G Y Thermatel Model TA2 flow transmitter measures mass flow by detecting heat dissipation from a heated surface. The sensor contains two mass balanced elements with precision matched RTDs. The reference sensor measures the process temperature (up to +400° F [+200° C]); the second RTD measures the temperature of the heated sensor. The power to the heater is varied to maintain a constant temperature difference above the reference temperature. compares the power against the calibration curve and converts the power requirements to the mass flow rate. Temperature is also measured to...

A P P L I C A T I O N S NATURAL GAS FLOW The Model TA2 efficiently measures the flow and totalized flow of fuel to furnaces, heaters, or boilers. This data may be used for internal allocation or to report emission rates. Advantages: • direct mass flow in SCFM • built-in totalizer • ease in setup and operation FLARE LINES Measurement of flow in different sections of flare line. Advantages: • good low flow sensitivity • auto switching capability between multiple calibration curves for highest turndown • easy removal if cleaning is required AERATION AIR FLOW Measurement and balance of the flow to...

APPROVED MODEL PROTECTION METHOD AREA CLASSIFICATION UNITED STATES & CANADA Explosion Proof FM17US0310X/FM17CA0159X Class I, Div 1, Groups B, C, D T6 Ta = -40 to +70 °C, T5 Ta = -40 to +80 °C Class II, III, Div 1, Groups E, F, G T6 Ta = -40 to +70 °C, T5 Ta = -40 to +80 °C Class I, II, III Div 2, Groups A,B, C, E, F, G T4 Ta = -40 to +70 °C Integral Transmitter/Remote Probe Housing: Class I, Zone 1, AEx/Ex db qb IIC T4...T3 Gb Class I, Zone 1, AEx/Ex db IIC T4...T3 Gb Zone 21, AEx/Ex Ex tb IIIC T135°C...T200°C Db Remote Transmitter: Class I, Zone 1, AEx/Ex db IIC T6 Gb Zone 21, AEx/Ex Ex tb IIIC...

APPROVED MODEL PROTECTION METHOD AREA CLASSIFICATION TA2-AXXX-X3X TA2-AXXX-X4X com TXR-XXXX-XXX (probe) TFT-XXXX-000 (flow body) Flameproof ABNT NBR IEC ABNT NBR IEC ABNT NBR IEC ABNT NBR IEC Integral Transmitter/Remote Probe Housing: TA2 com sonda de insersão ou em linha Ex db qb IIC T4...T3 Gb Ex db IIC T4...T3 Gb -40 < Ta < +70 ºC Remote Transmitter: TA2 Ex db IIC T6 Gb -40 < Ta < +70 ºC All Probes: Ex qb IIC T4…T3 Gb Ex db IIC T4…T3 Gb -40 < Ta < +70 ºC IP66W TUV 11.0027 X Note: Consult factory for full list of country approvals. These units have been tested to EN 61326 and are in compliance...

316/316L stainless steel all welded Hastelloy® C-276/C-22 Refer to model number, hot tap optional 1500 psig @ +70 °F (103 bar @ +20 °C), 1375 psig @ +400 °F (95 bar @ +200 °C) -50 to +400 °F (-45 to +200 °C) ➀ Process connections Pressure rating Temperature rating F L O W Materials B O D Y 316/316L stainless steel all welded Carbon steel with stainless steel sensor NPT or 150-pound flange – Refer to model number 1500 psig @ +70 °F (103 bar @ +20 °C), 1100 psig @ +400 °F (76 bar @ +200 °C) -50 to +400 °F (-45 to +200 °C) ➀ Process connections Pressure rating Temperature rating ➀ For operating...