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TA2 Atex Digital flow switch with integrated display.

TA2 Atex Digital flow switch with integrated display for air and gas.

TA2 Atex Digital flow switch with integrated display for air and gas.
Measuring principle thermal hot wire
Range 0.05÷275 Nm/s depending on the diameter
Output signal pulses 4÷20 mA; HART; Fieldbus
Process connection by 1/2" to 4"Gas
Temperature of fluid up to 200°C 
Pressure up to 103 bar 
On request Atex 
Price from € 1.100,00
The TA2 thermal mass flow transmitter, based on thermal dispersion technology, 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. The TA2 offers the user the ability to verify calibration in the field, reducing the need for periodic recalibration.

Operating Principle:
The TA2 mass 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 +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. There is an inherent non-linear relationship between power and mass flow. The microprocessor in the TA2 compares the power against the calibration curve and converts the power requirements to the mass flow rate. Temperature is also measured to provide temperature compensation of the mass flow over the operating range of the instrument.

Applications:
• Combustion Air
• Compressed Air
• Natural Gas
• Aeration Air
• Digester/Biogas
• Vent Lines/Flare Headers
• Hydrogen Lines

Features:
• Direct mass flow measurement of air and gas
• Excellent low flow sensitivity
• Process temperatures to +200°C
• Rotatable housing
• FM/FMc/ATEX approvals
• Resettable and non-resettable totalizers

Options:
• Pulse and second mA output for temperature
• Plug in display with keypad
• HART/AMS/PACTware communications
• Remote electronics

    Technical Characteristics

    Measuring principle:
      • Thermal hot wire
      Measuring range / adjustment:
        • 0.05÷275 Nm/s
        Outputs available:
          • HART
            Fieldbus
          • 4÷20 [mA]
          Precision Class:
            • ±1% VFS
            Operating temperature:
              • -45÷+200 [°C]
              Pressure max:
                • 103 [Bar]
                Process connection:
                  • Threaded: da 1/2" a 4"
                  Materials in contact with the media:
                    • Aluminum
                    Degree of protection:
                      • IP40
                      Approvals:
                        • Accredia certificate
                        • Calibration certificate
                        • ATEX Declaration
                        • EC Declaration of Conformity