E&H 8Q3B Coriolis Mass flowmeter

In the evolving landscape of process instrumentation, measuring fluids with entrained gas has historically presented significant challenges. The E&H 8Q3B Coriolis mass flowmeter, part of the innovative Promass Q 300 series, redefines performance standards for gas-liquid two-phase mixtures . Engineered with Endress+Hauser’s advanced Multi-Frequency Technology (MFT), this device ensures stable measurement even under difficult process conditions where conventional meters fail. As a specialized supplier, ST-YUKE CO., LIMITED is proud to offer this cutting-edge solution to clients requiring uncompromising accuracy for custody transfer and density applications.

Product Series Overview: The Q300 Family

The Promass Q 300 series is designed for the highest measurement performance, making it the preferred choice for custody transfer applications -1. The portfolio is structured by nominal diameter to accommodate a wide range of flow requirements. The complete lineup includes:

8Q3B25 (DN 25 / 1″)

8Q3B50 (DN 50 / 2″)

8Q3B80 (DN 80 / 3″)

*Note: The series also extends to larger line sizes such as the 8Q3B1H (DN 100 / 4″) for higher capacity requirements.*

Key Technical Specifications

The 8Q3B series stands out for its exceptional accuracy and ability to handle entrained gases without sacrificing performance. Below are the core technical parameters relevant for process engineers and procurement specialists.

Performance Data

Mass Flow Accuracy (Liquid – Standard): ±0.10%

Mass Flow Accuracy (Liquid – PremiumCal Option): ±0.05%

Mass Flow Accuracy (Gas): ±0.35%

Density Accuracy (Liquid): ±0.2 kg/m³

Volume Flow Accuracy (Liquid): ±0.10%

Measuring Range: 0 to 550,000 kg/h (0 to 20,210 lb/min)

Operating Conditions

Process Temperature (Standard): –50 to +205 °C (–58 to +401 °F)

Process Temperature (Cryogenic Option): –196 to +150 °C (–321 to +302 °F)

Maximum Process Pressure: PN 100, Class 600, 63K

Ambient Temperature Range: Standard –20 to +60 °C; Optional –40 to +60 °C

Ingress Protection: Sensor: IP66/67, Type 4X; IP69 available

Wetted Materials

Measuring Tube: 1.4404 (316/316L); stainless steel available for cryogenic applications

Process Connections: 1.4404 (316/316L)

Sensor Housing: 1.4404 (316L), highly corrosion-resistant

Communication and Outputs

The Promass Q 300 transmitter features a compact dual-compartment housing supporting up to 3 I/Os. Available protocols include:

40 mA HART (active/passive)

PROFIBUS PA, Modbus RS485, PROFINET, Ethernet/IP

Pulse/frequency/switch output

Status input and 40 mA input options

Core Technology: Optimized for Gas Entrainment

What truly distinguishes the E&H 8Q3B Coriolis mass flowmeter is its ability to handle gas-liquid two-phase mixtures. Traditional Coriolis meters become unstable when gas bubbles are present in the liquid stream. The Q300 series employs Multi-Frequency Technology (MFT) , which simultaneously analyzes multiple measuring tube frequencies to maintain stability and accuracy even with significant gas entrainment . This makes the 8Q3B50 and its siblings ideal for applications prone to gas breakthrough or cavitation.

Heartbeat Technology

Like all modern Promass instruments, the 8Q3B incorporates Heartbeat Technology for proactive process management . This built-in functionality allows for:

Continuous self-diagnosis without process interruption

In-situ verification traceable to ISO 9001 standards

Meter verification on demand, eliminating costly manual checks

Detailed Ordering Code Breakdown: 8Q3B50-BBDBABBAAALAAASAA2+AA

To illustrate the extensive customization available, ST-YUKE CO., LIMITED provides a detailed解析 of the order code for the 8Q3B50 model. Understanding these features is crucial when specifying a flowmeter for critical applications like custody transfer or fiscal measurement.

Base Model: 8Q3B50

8Q3B: Coriolis flowmeter, Promass Q 300 series, transmitter version.

50: Nominal diameter DN50 (2″) .

Breakdown of the Feature String: BBDBABBAAALAAASAA2+AA

This alphanumeric code specifies the exact configuration of the instrument. Based on standard E+H logic, we can interpret the modules as follows:

BB (Approval – Sensor): This typically denotes the hazardous area approval for the sensor. “BB” likely indicates ATEX/IECEx Zone 1/21 approval for gas and dust applications.

D (Output – Transmitter): Digital communication protocol. “D” here might specify a particular protocol such as Modbus RS485 or a specific configuration of HART.

B (Display – Transmitter): Display and operating language. “B” usually indicates the presence of a backlit display with touch control.

A (Housing – Sensor): Sensor housing material and version. “A” typically signifies 316L cast housing, standard finish.

B (Process Connection – Type): “B” may denote a specific flange type, such as ASME B16.5 (Class 150/300/600) depending on subsequent codes.

B (Process Connection – Size): This aligns with the base selection of DN50 (2″) flanges.

A (Measuring Tube – Material): “A” stands for standard material, which for the Q300 is stainless steel 1.4404 (316/316L) .

A (Internal Surface Finish): Standard finish, not polished.

A (Sensor – Advanced Features): Standard version without special options.

A (Calibration – Flow): Standard calibration (likely 3-point or 5-point). The PremiumCal 0.05% option would be represented by a different letter.

L (Calibration – Density): “L” may indicate a specific density calibration range or standard density calibration for liquid applications.

A (Sensor – Inspection): Without special inspection.

A (Medium Contact – Wetted Seals): Standard Viton seals.

A (Sensor – Special Testing): Without special testing.

S (Sensor – Ex Approval): This confirms the sensor Ex approval configuration, matching the initial “BB” selection.

A (Additional Test – Certificate): Declaration of conformity to EN10204.1 material certificate .

A (Additional Approval – Transmitter): Without special transmitter approval.

2 (Output – Transmitter – Detailed): This specifies the exact I/O configuration (e.g., 40mA HART with specific I/O counts).

+AA (Transmitter – Allocation): This trailing code typically allocates the specific Promass 300 transmitter (e.g., standard version with specific power supply) to the sensor .

Note: While this is a representative breakdown based on standard Endress+Hauser logic, actual configurations should always be verified with the official E+H configuration tools. ST-YUKE CO., LIMITED can assist in validating these codes against your specific P&ID and functional requirements.

Why Choose ST-YUKE CO., LIMITED as Your Supplier?

Selecting the right instrumentation for two-phase flow and custody transfer applications requires deep technical knowledge and reliable sourcing. At ST-YUKE CO., LIMITED, we specialize in supplying high-precision instruments like the entire 8Q3B series. Whether you require the compact 8Q3B25 for lower flow rates or the high-capacity 8Q3B80 for main process lines, we ensure that every device meets stringent quality and certification standards.

We understand that the correct specification of a mass flowmeter is critical for fiscal measurement, process safety, and regulatory compliance. Our team is equipped to help you interpret complex order codes—such as the 8Q3B50-** variant for your specific needs—and provide competitive pricing with reliable lead times. Partner with us for genuine products, technical support, and supply chain solutions tailored to the demands of the oil & gas, chemical, and cryogenic industries .