RMG USM GT400 User Manual

Ultrasonic Flowmeter USM GT400
OPERATING INSTRUCTION
Reliable Measurement of Gas
Read the instructions before starting work!

RMG USM GT400 Specifications

General

Brand	RMG
Model	USM GT400
Category	Measuring Instruments
Language	English

Summary

2 Brief instructions

2.1 Mechanical connection

2.2 Electrical connection

2.3 Start Up

Guides users through the initial steps required to start up the device after installation and connection.

2.4 Earthing

2.5 Parameter setting

4 Functional principle - Ultrasonic flow measurement

4.1 General description

Explains the fundamental working principle of ultrasonic flow measurement, including formulas and path concepts.

4.2 Correction of the base line

4.3 Diagnostic function Speed of Sound

4.4 Import of gas composition data

5 Safety

5.1 Intended use

Defines the specific purpose and safe operating environment for the ultrasonic gas meter, including explosive areas.

5.3 Qualification of the personnel

Specifies the necessary qualifications and training for personnel operating or maintaining the device, especially in hazardous environments.

5.4 Safety instructions

Provides critical safety instructions to prevent hazards during device operation, transport, installation, and maintenance.

5.5 Responsibilities of the operator

Outlines the duties and responsibilities of the device operator for ensuring safe usage and hazard awareness.

6 Transport and storage

6.1 Transport

6.2 Packing the device for transportation

6.3 Storage

7 Construction and Planning

7.1 Connection flanges

7.2 Seals

7.4 Installation possibilities

7.5 Flow computer

8 Installation

8.1 Assembly work preparations

Outlines essential preparatory steps and safety precautions before device installation, covering electrical and pressure hazards.

8.2 Installation of the device

Provides detailed instructions for physically installing the ultrasonic gas meter, including piping and connection box.

8.3 Connecting the device electrically

Details the procedures for making all necessary electrical connections to the device, including power and interfaces.

8.4 Installing the pressure connection

Explains how to properly install the pressure connection for the device, with options for shut-off valves.

8.5 Outdoor installation

9 Start Up

9.1 Comparing meter parameters

Guides users on comparing device parameters with calibration or test certificates for accurate operation.

9.2 Checking functions of the USM

Describes how to verify the operational functions of the ultrasonic gas meter after installation, checking flow and pressure.

9.3 Reading out speed of sound

10 Operation

10.1 Measuring values and parameters

Details how measuring values and parameters are organized in a matrix structure and accessed via display or software.

10.2 Calling up and changing the parameters via the ultrasonic electronics

Provides instructions for navigating and modifying device parameters using the ultrasonic electronics' control panel and buttons.

10.3 Parameterize the USM interface

10.4 Modbus communication in detail

10.5 List of the measurement values and parameters

11 Maintenance

11.1 Maintenance schedule

Outlines the recommended maintenance schedule and associated activities for device longevity and optimal performance.

11.2 Checking the device for leaks

Describes the procedure and frequency for checking the device for leaks, including recalibration checks.

11.3 Checking the device for any signs of damage

11.4 Changing the battery

11.5 Changing the transducer

11.6 Changing the ultrasonic electronics

11.7 Cleaning the device

11.8 Check the official seal

11.9 Decommissioning and disposal

12 Alarm and warning messages

12.1 Alarm messages

Lists and explains all possible alarm messages generated by the device, indicating operational status and faults.

12.2 Warning messages

Lists and explains all possible warning messages generated by the device, indicating potential issues or deviations.

12.4 Troubleshooting

Offers guidance on how to resolve common issues and problems encountered with the device, suggesting contact with service.

13 Technical specifications

13.1 Performance data

Details the performance characteristics and specifications of the device, including power, interfaces, and environmental conditions.

13.2 Approved gas types

13.3 Approved measuring range according to MID

13.4 Type plate

13.5 Weights and dimensions

13.8 Transducer types

14 USM GT400 Approval

14.1 Metrological approvals

Lists the metrological approvals obtained by the device, such as MID and MC type approvals.

14.2 Pressure devices approval

Details the approvals related to pressure device standards and regulations like PED and ASME.

14.3 Electromagnetic compatibility

14.4 Explosion protection approval

Lists the explosion protection approvals, including ATEX, IECEx, and CSA standards for hazardous environments.