Micro Motion TA-Series Tantalum Coriolis Flow and Density Meters

Tantalum Coriolis meters for corrosive process fluids

The Micro Motion TA-Series is a family of Coriolis flow and density meters with all wetted parts made of tantalum, aimed at corrosive applications where stainless steel and nickel alloys are not suitable. The sensor measures mass flow, volume flow, density and temperature, and it is offered only with the Micro Motion 5700 field-mount transmitter, which supplies the wide range of input and output options and the Smart Meter Verification diagnostics that can detect corrosion and other process effects.

Technical specifications

Where tantalum is chosen

Tantalum is selected for strongly corrosive fluids, typically hot acids, where the sensor would otherwise be limited by material compatibility. General corrosion tables do not account for cyclic stress, so the datasheet advises checking the Micro Motion Corrosion Guide for the actual fluid and concentration. Because the sensor is tied to the 5700, the transmitter brings Smart Meter Verification, an onboard historian and multi-channel I/O. The Micro Motion 5700 is covered on its own page: Micro Motion 5700 Coriolis flow transmitter. Process connections follow ASME B16.5 and EN 1092-1 per the de-rating charts.

What to confirm before ordering

• Exact fluid, concentration and temperature for a tantalum compatibility check
• Sensor size, case option (N, P, G, E or T) and process connection with rating
• Process temperature, because the extended-mount junction box is needed above 176 °F (80 °C)
• Hazardous area approval and the 5700 transmitter output configuration
• Pressure de-rating of the selected flange at operating temperature

How the Micro Motion TA-Series works

A Coriolis meter measures mass flow directly. The fluid passes through tubes that are made to vibrate. The moving mass twists the tubes slightly, and sensors measure the twist. The twist gives the mass flow, and the tube frequency gives the density. In the TA-Series the tubes and every part that touches the fluid are made of tantalum, a metal that resists many strong acids. A transmitter turns the signals into flow, density and temperature outputs.

Where the Micro Motion TA-Series is used

• Hot acid service
• Chemical process lines
• Corrosive fluids that damage stainless steel
• Fluids that damage nickel alloys
• Batching and transfer of aggressive liquids

Selection checklist for the Micro Motion TA-Series

• Sensor size from TA010T to TA300T
• Nominal flow rate
• Case option, standard or enhanced
• Process temperature up to 180 degrees C
• Working pressure and connection rating
• Hazardous area marking
• Model 5700 transmitter outputs
• Corrosion diagnostics

Installation, commissioning and maintenance notes for the TA-Series

Install the sensor so that it stays full of liquid and support the pipework so that no load falls on the sensor. Mount the Model 5700 transmitter, wire the cable and configure the outputs. Zero the meter with no flow. Use the meter verification diagnostics to check the meter over time.

Requesting a quotation for the Micro Motion TA-Series

Please send the fluid, the flow, the temperature, the pressure, the connection and the quantity. Seven Star LLC serves industrial customers in Oman and the GCC and replies with a quotation based on the information provided.

TA-Series accuracy

Liquid mass and volume flow accuracy is plus or minus 0.10 percent. Repeatability is plus or minus 0.05 percent.

TA-Series density

Density accuracy is plus or minus 1 kg/m3.

TA-Series sizes

Sensors run from TA010T at 0.10 in up to TA300T at 3 in.

TA-Series pressure and temperature

Pressure reaches 40 barg for most sizes. Process temperature runs from minus 40 to plus 180 degrees C.

TA-Series transmitter

The sensor works only with the Micro Motion 5700 field-mount transmitter.

Meter records for the TA-Series

Record the zero value, the verification results and the date.

Choosing the right TA-Series size

Choose the size from the flow rate and the pressure drop you can accept.

TA-Series tantalum wetted parts

Tantalum resists hot acids that attack stainless steel and many nickel alloys, which is why this series exists.

TA-Series measured outputs

The meter reports mass flow, volume flow, density and temperature from one sensor.

TA-Series hazardous area options

The data sheet lists CSA, ATEX and IECEx marks, so check the marking against the area classification of your site.

Documents and quotation

The Micro Motion TA-Series datasheet (PS-002121 Rev I, March 2025) is available from the product documents on this page. Seven Star LLC is an independent supplier in Muscat; send the complete order code from the nameplate or your specification and we will check it against the manufacturer documentation before quoting. Browse more flowmeters in the catalogue.