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Toshiba Manuals
Plumbing Product
LF502
Instruction manual
Toshiba LF502 Instruction Manual
Electromagnetic flowmeter for partially filled pipes
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Table Of Contents
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Safety Precautions
Table of Contents
Production Inspection and Storage
Overview
Features
Names of Parts
View of Detector
View of Converter
Internal Details of Converter
Installation
Location
Mounting Procedure
Flange Connection
Applying Bolt Sizes, Numbers, Recommendable Torque Value and Flange, Detector Diameter
Installing Detector on Manhole
Warnings for Detector Installation
Installing Pipe Section on Forward/Reverse Direction of Detector
Locate Electrode of Detector Exactly under the Pipe
Arrow Board in Detector
Adjust Flow Level
Installing Converter on Panel and Wall
Grounding
Wiring
Cables
External Device Connections and Grounding
Terminal Block Connections
Digital I/O Connections
Example of Electromagnetic Counter Connection
Wiring Procedure
Cable Termination
Signal Cable Processing
Untying Shields from Cables
Excitation Cable
Other Cables (Power Cable and Output Cable)
Termination of Cables
Cabling Procedure
Connecting Cable to Terminal Measurement
Cable Clamping
Converter Cover Installation
Operation
Preparatory Check
Zero Adjustment
Measurement Mode Display
Display Format
Measured Value Display Format
Flow Velocity
Totalized Flow by Incremental Counter
Totalized Flow Indicated by the Measuring Unit
% Display
Panel Operation
Names and Functions of Operation Panel
LED Display
Liquid Crystal Display
Key Switches
Basic Operations
Mode Change
Setting Items Selection
Checking or Changing Parameters
To Check the Meter Size and Excitation Frequency
To Check the Measuring Units
Span (Range)
Unit of Span
Range Type
Hysteresis
The Setting Sequence
To Change the Span (Range)
To Change the Hysteresis
To Change the Range Type
To Check the Damping Constant
To Change the Damping Constant
Counting Rate (Pulse Rate)
To Check the Counting Rate and Pulse Width
To Change the Counting Rate and Pulse Width
Low Cutoff
To Check the Low Cutoff Value
To Change the Low Cutoff Value
High and Low Limit Alarms
To Check the High and Low Limit Values
To Change the High and Low Limit Values
To Check the Empty Pipe Alarm Enable/Disable Status
To Change the Empty Pipe Alarm Enable/Disable Status
To Check the Rate-Of-Change Limit Value and the Control Limit Time
To Check the Preset Count Value
To Change the Preset Count Value
To Check the Exciting Current Value
To Change the Exciting Current Value
Digital Output Functions
Digital Input Functions
To Check the Digital I/O Functions
To Change the Digital I/O Functions
To Check the Enable/Disable Status of the Fixed-Value Output and Its Output Values
To Check the Zero Offset Value
To Change the Zero Offset Value
Calibration
To Check the Zero, Span and Exciting Current
To Change the Zero and Span of the Converter
Reference Voltage Check Pins and a Trimmer
Digital I/O Functions
Digital I/O Specifications
Totalized Flow Counter and Pulse Output
Totalized Flow Counter Operation
Using Key Switches on the Panel
Using a Remote DI Signal
Multi-Range Functions
Output Performance of Multi-Range Functions
Automatic Selection of Unidirectional Flow Multi-Range
Automatic Selection of Bidirectional Flows Multi-Range
Reverse to Forward Direction Change
Forward to Reverse Direction Change
Remote Selection of Unidirectional Flows Multi-Range with an External Signal
Remote Selection of Bidirectional Flows Multi-Range with an External Signal
High and Low Limit Alarm Output Performance
Single Range Performance
Multi-Range Performance
Empty Pipe Alarm
Output Conditions When an Empty Pipe Alarm Occurs
Preset Point Output
Preset Point Output Performance
Input/Output Signal Time Chart
Remote Zero Adjustment
Start Signal Requirements
Remote Selection of Fixed Value Output
Control Signal Input Conditions
Converter Failure Alarm
Self-Diagnostics Errors
Output Conditions
Communications Function
Connections with AF100 Terminal
Connections to the Current Output Line
Connections to the Flowmeter
Communications Procedure
Cautionary Notes on Communications
Filter Connection Example
Self-Diagnostics
Setting Error
Precautionary Notes on Using the Empty Pipe Alarm
Converter Hardware Failure
Output Status for Errors and Alarms
Maintenance
Troubleshooting
Flow Rate Is Not Indicated
Flow Rate Indication Is Not Correct
Flow Rate Indication Is Not Stable
Principle of Operation
Flowmeter Specifications
Overall Specifications
Detector
Converter
Input Specifications
Output Specifications
DO1 and DO2 Selectable Functions
Type Specification Code
Type Specification Code (Bolts, Nuts and Packings)
Outline Dimensions
Meter Size 150Mm and 200Mm
Meter Size 250Mm and 300Mm
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