Oval MAG-OVAL III Series User Manual

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Electromagnetic flowmeter
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Models MGW and MGS
Every MAG-OVAL III is manufactured under the stringent quality control and thoroughly tested and
inspected before shipment from our factory.
This manual is designed to assist the user to obtain the best performance of this product throughout
its service life. In order to take sufficient care, please read this instruction carefully before the use
and keep it handy for quick reference.

Oval MAG-OVAL III Series Specifications

General

Model	MAG-OVAL III Series
Category	Measuring Instruments
Type	Electromagnetic Flowmeter
Protection Class	IP67
Fluid Temperature	-20 to 120 °C
Ambient Temperature	-20°C to +60°C
Accuracy	±0.5% of reading
Lining Material	PTFE, PFA
Electrode Material	Stainless Steel, Titanium
Process Connection	Flange
Power Supply	24 VDC
Output Signal	4-20 mA
Communication	HART, Modbus
Material	Stainless Steel
Measurement Range	0 to 10 m/s

Summary

Piping Instructions

Keeping the Flow Tube Completely Filled

Importance of ensuring the flow tube is completely filled with process fluid for accurate measurement.

Prevention of Negative Pressure

Measures to prevent negative pressure in the pipeline to ensure long-term probe service life.

Probe Installation

Screw-in Type Installation

Instructions for installing screw-in type flowmeters, emphasizing proper sealing.

Wafer Type Installation

Precautions for installing wafer type flowmeters, including probe lining protection and alignment.

Grounding

Wiring Connections

Power and Output Signal Wiring

Instructions for accessing and making power and output signal wiring connections to the transmitter.

Wiring Connection Diagram

Visual diagram illustrating the terminal layout and GND terminal location for wiring.

Terminal Identification

Wiring Connection Instruction

Start-Up

Maintenance

Transmitter Display and Operation

Explanation of Display

Measure Mode

Measure Mode Screen

Error/Alarm and Status Display

How errors, alarms, and status are indicated on the LCD display.

Operations in Setup Mode

Transition from Measure Mode to Setup Mode

Changing Parameters

Display Transition

Analog Output Function

Setting Analog Output

Adjusting Analog Output

Procedure for adjusting analog output values (4mA and 20mA) for accuracy.

Pulse Output and Totalizing Function

Setting Pulse Output

Status Output Function

Selecting Status Output

High/Low Limit Alarm Function

Loop Test (Simulative Output) Function

Simulative Output Operation

How to perform simulative output tests for analog, pulse, and status signals.

Communication Function

Communication Specifications

Self-Diagnosis Function

Self-diagnosis Items

Description of various self-diagnosis checks like circuit voltage and empty detection.

Diagnosing All Items

How to execute a comprehensive self-diagnosis and interpret results.

Diagnosing Self-diagnosis Items Individually

LCD Check

Error/Alarm Status List

Error/Alarm List

Comprehensive list of errors and alarms with codes, messages, causes, and countermeasures.