E&H 9G5B ultrasonic flowmeter

E&H 9G5B ultrasonic flowmeter

Overview

The Endress+Hauser Proline Prosonic Flow G 500 is a highly robust ultrasonic flowmeter designed as a gas specialist for fluctuating process conditions. Available as a remote version with up to 4 I/Os, this instrument delivers direct measurement of flow, pressure, and temperature in a single compact unit-1. The measuring principle is based on ultrasonic transit time difference, which remains unaffected by gas composition changes-1.

Key Technical Specifications

Measuring Range & Accuracy

Gas flow velocity: 0.3 m/s to 40 m/s-1

Volume flow (standard): ±1.0% o.r. for 3–40 m/s; ±2% o.r. for 0.3–3 m/s-1

Volume flow (optional calibration): ±0.5% o.r. for 3–40 m/s; ±1.0% o.r. for 0.3–3 m/s-1

Sound velocity: ±0.2% o.r.-1

Process Conditions

Medium temperature: –50°C to +150°C (–58°F to +302°F)-1

With integrated pressure cell: –50°C to +100°C (–58°F to +212°F)-1

Max. process pressure: 0.7 to 101 bar a (10.15 to 1464.88 psi a)-1

Process pressure up to 1450 psi with built-in pressure sensors-

Wetted Materials

Measuring tube: 1.4408/1.4409 (CF3M)-1

Transducer: 1.4404 (316, 316L, Titanium Grade 2)-1

Nominal Diameter Range: DN 25 to 300 (1″ to 12″)-4

Measured Variables: Volume flow, corrected volume flow, mass flow, flow velocity, speed of sound, pressure, temperature, density, dynamic viscosity, energy flow, Wobbe index, methane fraction, calorific value, molar mass-4

Degree of Protection: IP67-

Product Series Variants

The Prosonic Flow G 500 series includes eight main configurations across the 9G3B and 9G5B product families:

9G3B Series: 9G3B25 | 9G3B50 | 9G3B80 | 9G3B1H | 9G3B1F | 9G3B2H | 9G3B2F | 9G3B3H

9G5B Series (primary focus): Features remote transmitter design with standard cable connection between sensor and transmitter, backlit display with touch control, and WLAN access-1.

Complete Order Code Example

9G5B25-AAXXXXXXXAXLBBABAAASAA2 – This full product designation represents a DN 25 variant within the 9G5B platform. The order code structure breaks down as follows:

9G5B25: Product root and nominal diameter (DN 25)

AAXXXXXXX: Sensor and transmitter configuration

AXLBBABAAASAA2: I/O module combination, communication protocol selection, housing material, approvals, and calibration options

Additional documented 9G5B order codes include 9G5B1H-AAIBADDDGAAALDACCAASAA2AADEDHEBP7 and 9G5B1F-BNIMAAAAGAALADACFACSDA2-2. These configurations vary in nominal diameter (25, 1H, 1F, 2H, 2F, 3H designations), wetted materials, and I/O module selections.

Transmitter & Connectivity Features

The remote transmitter offers:

Up to 4 freely combinable I/Os (4–20 mA HART, Modbus RS485, PROFIBUS DP, pulse/frequency outputs)-1

Backlit graphical display with touch control-1

WLAN access for mobile device connectivity-1

Heartbeat Technology for integrated device verification and compliance (ISO 9001:2015, Section 7.1.5.2 a)–1

Safety & Approvals

Pressure-rated sensor housing with rupture disc limits safety risks-1

ATEX and IECEx approvals for hazardous area installations-

Calibration performed in ISO/IEC 17025 accredited facilities-

Applications

The Prosonic Flow G 500 provides reliable flow measurement for natural gas, process gases, and user-definable gas mixtures in:

Chemical processing (accurate measurement unaffected by gas composition)-1

Oil and gas industries-1

Applications with wet gas and changing gas properties-1

Humid environments (sensor design insensitive to condensate)-1

Why Choose the 9G5B Series?

The 9G5B ultrasonic flowmeter delivers real-time pressure- and temperature-compensated values for high-performance process control-1. As a multivariable instrument with no pressure loss, it provides an efficient solution for demanding measuring tasks-1. The remote transmitter design maximizes installation flexibility and operational safety in challenging environments-1.