Thermatel® TA2
Mass Flow Transmitter

Thermatel Model TA2 Thermal Mass Flow Transmitter 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.

Measurement Principle:
Thermatel Model 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 +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.

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.

Features:

• Direct mass flow measurement of air and gas
• Excellent low flow sensitivity
• Process temperatures to +400° F (+200° C)
• Rotatable housing
• FM/FMc/ATEX approvals
• Resettable and non-resettable totalizers

Applications:

• Combustion air
• Compressed air/gas
• Natural gas
• Digester/Biogas
• Hydrogen lines

Options:

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

Model R82 Pulse Burst Radar Transmitter Radar has been part of the level measurement market for more than thirty years. The early designs used in tank gauging were heavy, expensive, power-hungry and complex. Advancements in radar circuitry have evolved the modern radar transmitter so that now it is light, inexpensive, loop-powered and easy to use. The R82 is the logical extension of that evolution. Microwave-based radar is a superior measurement technology with its ability to operate effectively in a wide range of process conditions. It has been too expensive to use as a replacement for ultrasonic transmitters in simple, daily applications....until now. The R82 radar transmitter can be considered the answer to almost every, daily level measurement application imaginable.

OFS 2000F Optical Flow Sensor

 

OSi's patented Optical Flow Sensor (OFS) makes drift-free measurements across the entire stack, duct or pipe diameter and calculates an accurate average flow reading. It is the only flow sensor that gives a true non-contacting cross-stack flow measurement of the process. The OFS uses our EPA Method 14 approved optical scintillation technology. The optical scintillation technique relies on advanced Digital Signal Processing (DSP) electronics to "see" and measure the movement of turbulence found in a gaseous flow stream to provide highly accurate, pathaveraged air velocity measurements. The accuracy of the OFS has been proven both in NIST’s wind tunnel and in numerous real-world installations.

 

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