E&H 93TA1 ultrasonic flowmeter

E&H 93TA1 ultrasonic flowmeter

Product Introduction

The Proline Prosonic Flow 93T is Endress+Hauser‘s portable ultrasonic flow measurement solution designed for temporary monitoring and test measurements. Known by the order code 93TA1, this non-invasive flowmeter uses clamp-on sensors to measure liquid volume flow from outside the pipe, eliminating the need for process interruption-11.

Whether you are performing verification checks on existing flow metering points, conducting temporary monitoring across multiple measurement sites, or validating system performance during commissioning phases, the Prosonic Flow 93T delivers reliable, economical measurement with minimal setup time-3.

Key Features at a Glance

Measuring Principle: Transit-Time Ultrasonic Technology

The Prosonic Flow 93T operates on the transit-time difference principle. Two ultrasonic transducers clamp onto the pipe exterior, alternately transmitting and receiving ultrasonic signals. When fluid flows, the signal traveling downstream moves faster than the signal traveling upstream. The flowmeter calculates the time difference between these two signals, then converts it into flow velocity and volumetric flow rate–.

This non-intrusive measurement method offers several inherent advantages:

No pressure loss — the clamp-on design introduces no flow obstruction

Bidirectional flow measurement capability

Unaffected by process pressure or fluid electrical conductivity

No moving parts, meaning virtually zero wear

Nominal Diameter Specifications

The 93TA1 accommodates an exceptionally wide pipe diameter range through three sensor families. Each sensor type is optimized for specific diameter bands and temperature conditions:

For the W-Sensor, an optional temperature variant is available for medium temperatures from 0 … +170°C (32 … +338°F)-3-7.

Measurement Performance

Accuracy

The Prosonic Flow 93T achieves a maximum measurement error of ±2.0 % of reading across its specified operating range-11.

Measurement Range

Volumetric flow rate: 0 … 452,389 m³/h (dependent on pipe diameter and fluid velocity)

Flow velocity: 0 … 15 m/s

This wide turndown capability allows the instrument to handle both low-flow and high-flow applications without requiring recalibration or sensor replacement.

Repeatability

The transit-time measurement method combined with automatic frequency scanning ensures consistent, repeatable results even when measurements are taken at different times or by different operators.

Operating Conditions

Medium Temperature

The 93TA1 handles a broad spectrum of fluid temperatures based on the sensor selected:

DN 15 … 65 sensors: –40 … +150°C (–40 … +302°F)

DN 50 … 300 sensors: –40 … +170°C (–40 … +338°F)

DN 100 … 4000 sensors: –40 … +80°C (–40 … +176°F)-11

Process Pressure

No upper pressure limit. Because the sensors are clamped externally onto the pipe wall, they never contact the process medium. This means the flowmeter can be used on high-pressure lines without derating or special pressure considerations-3-7.

Ambient Temperature

The portable transmitter is rated for field use in typical industrial environments. For extreme ambient conditions, consult the full technical documentation (TI00109D).

Fluid Compatibility

The Prosonic Flow 93T is suitable for any liquid that conducts ultrasonic waves. Typical applications include:

Water and wastewater

Demineralized water and drinking water

Cooling water and river water

Oils and hydrocarbons

Solvents and acids

Chemical reagents

Lightly contaminated liquids-3-7

The measurement is completely unaffected by the fluid‘s electrical conductivity, making the 93TA1 an excellent choice for deionized water applications where electromagnetic flowmeters would fail.

Pipe Compatibility

The 93TA1 works with virtually any pipe material capable of conducting ultrasonic waves:

Metal pipes (steel, stainless steel, copper, aluminum)

Plastic pipes (PVC, PP, PE)

Lined pipes

Composite pipes-3

For pipes with internal linings (e.g., rubber, PTFE, cement mortar), the ultrasonic signal penetrates the lining material as long as it is acoustically conductive. The installation requires only that the pipe surface is clean and that the sensors have solid acoustic contact.

Transmitter Specifications

Display and User Interface

The transmitter features a four-line backlit LCD that remains readable even in low-light field conditions. Navigation and parameter entry are handled via touch keys, providing a simple, glove-friendly interface-3.

The display shows:

Instantaneous flow rate (with selectable engineering units)

Totalized flow (forward/reverse/net)

Diagnostic messages

Sensor signal quality indicators

Power Supply

The 93TA1 operates independently of mains power using an internal rechargeable battery. A full charge typically supports a full day of intermittent measurements or several hours of continuous operation. The included power adapter recharges the battery when docked-11.

Protection Ratings

Physical Dimensions

Consult the Prosonic Flow 93T Technical Information document (TI00109D) for exact dimensional drawings.

Transmitter weight: Approximately 2.5 kg (5.5 lbs) including battery

Carrying case: Rugged, weather-resistant case included with standard configuration

Data Management and Connectivity

Integrated Data Logging

The Prosonic Flow 93T includes a built-in data logger capable of storing site configurations and measurement data. The instrument can retain up to 20 measuring site configurations, eliminating the need to re-enter parameters when moving between measurement points-3.

USB Data Transfer

Data transfer is accomplished via USB flash drive without requiring any additional software installation. Simply insert a standard USB stick, export the logged data, and analyze it on any PC-21.

Analog I/O

Current output: 4 … 20 mA (active/passive configurable) for integration with control systems, chart recorders, or remote displays

Current input: 4 … 20 mA for accepting external signals (e.g., pressure, temperature, or density) to enable calculated measurements such as mass flow or energy flow

Digital Communication

The instrument supports communication via FXA 193, Endress+Hauser‘s service interface for configuration and diagnostics using FieldCare or other asset management tools-3.

Installation and Mounting

Clamp-On Sensor Installation

The sensors mount directly onto the exterior pipe wall using specially designed mounting kits. The installation process requires no pipe cutting, welding, or process shutdown. A typical installation can be completed in minutes:

Clean the pipe surface at the intended mounting location

Apply acoustic couplant to the sensor faces

Secure the sensors using the appropriate mounting fixture (chain, strap, or rigid fixture)

Connect the sensor cables to the transmitter

Power on and verify signal strength

Mounting Configurations

The sensors can be installed in two configurations depending on pipe diameter and space constraints:

V-method (reflection mode): Single sensor pair, one reflection off the opposite pipe wall. Suitable for smaller diameters.

W-method (double reflection): Extended signal path for larger diameters or difficult acoustic conditions.

Z-method (through-transmission): Transmitting and receiving sensors mounted on opposite sides of the pipe. Recommended for large diameters, heavily scaled pipes, or when maximum signal strength is required.

Straight Run Requirements

For rated accuracy, the Prosonic Flow 93T requires straight pipe runs upstream and downstream of the sensor mounting location. Endress+Hauser‘s FlowDC technology helps maintain specified accuracy even in less-than-ideal piping configurations with as little as 2 × DN straight run-.

Application Examples

Verification of Existing Flow Meters

The primary intended use of the Prosonic Flow 93T is conducting verification measurements at already installed permanent flow metering points. By clamping onto the pipe alongside an existing meter, operators can:

Validate the permanent meter’s calibration

Detect drift or degradation in the installed instrument

Document measurement uncertainty for audit purposes

Temporary Monitoring

For applications requiring flow data for limited durations—such as pump performance testing, balancing HVAC systems, or troubleshooting flow issues—the 93TA1 provides a cost-effective solution that requires no permanent installation.

Multiple Measurement Points

The instrument‘s ability to store up to 20 site configurations makes it highly efficient for facilities that need to measure flow at many different locations. Operators can move from point to point, recall the saved configuration, and begin measuring immediately-3.

Order Code Information

The 93TA1 order code designates the portable Prosonic Flow 93T variant. Complete ordering codes follow the structure:

93TA1-XXXXXX+XXXXXX

Where the placeholder characters specify:

Sensor type and cable length

Transmitter configuration

Output options

Approvals and certifications

For example, 93TA1-CCAEAA+E2F1F2 represents a complete portable measurement system with standard configuration-.

Advantages and Benefits Summary

Limitations and Considerations

The following factors can affect measurement accuracy or feasibility:

Acoustic conductivity of the fluid: The fluid must be able to conduct ultrasonic waves. Heavily aerated or gas-entrained liquids, or those containing large suspended solids, may attenuate the signal.

Pipe wall condition: Heavily corroded, pitted, or scaled pipe surfaces can impede acoustic coupling.

Pipe liner adhesion: Liners that have separated from the pipe wall (debonded) will block the ultrasonic signal.

Transmitter protection: The IP40 rating of the transmitter requires protection from direct water spray or heavy rain.

Technical Documentation and Support

For complete engineering data, Endress+Hauser provides the following documentation for the Prosonic Flow 93T:

TI00109D/06/EN — Technical Information (full specifications, dimensions, and ordering details)

BA00109D/06/EN — Operating Instructions (installation, commissioning, and operation)

KA00109D/06/EN — Brief Operating Instructions (quick-start guide)