User's Manual
Table Of Contents
- Table of Contents
- SITRANS LR250 Overview
- Specifications
- Installation
- Wiring
- Operating via the handheld programmer
- Operating via SIMATIC PDM
- Functions in SIMATIC PDM
- Quick Start Wizard via SIMATIC PDM
- Changing parameter settings using SIMATIC PDM
- Parameters accessed via pull-down menus
- Operating via AMS Device Manager
- Functions in AMS Device Manager
- Features of AMS Device Manager
- Device Description (DD)
- Configuring a new device
- Startup
- Pull-down menu access
- Device configuration
- Quick Start Wizard via AMS Device Manager
- Maintenance and Diagnostics
- Remaining Device Lifetime [see Remaining Device Lifetime (4.2.) on page 99]
- Remaining Sensor Lifetime [see Remaining Sensor Lifetime (4.3.) on page 102]
- Service Schedule [see Service Schedule (4.4.) on page 105]
- Calibration Schedule [see Calibration Schedule (4.5.) on page 108]
- Electronic Temperature
- Wear (see Wear on page 56)
- Communication
- Security
- Device Diagnostics
- AMS Menu Structure
- Functions in AMS Device Manager
- Parameter Reference
- 1. Quick Start
- 2. Setup
- 3. Diagnostics
- 4. Service
- 5. Communication
- 6. Security
- 7. Language
- Appendix A: Alphabetical Parameter List
- Appendix B: Troubleshooting
- Appendix C: Maintenance
- Appendix D: Technical Reference
- Principles of Operation
- Echo Processing
- Analog Output
- Maximum Process Temperature Chart
- Process Pressure/Temperature derating curves
- Loop power
- Appendix E: Application Examples
- Appendix F: HART Communications
- Appendix G: ATEX Certificates
- Appendix H: Firmware Revision History
- Glossary
- Index
- LCD menu structure
Page 124 SITRANS LR250 (HART) – INSTRUCTION MANUAL 7ML19985JE03
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B: Troubleshooting
Reading response slow
Fill Rate (2.4.2.) setting incor-
rect
• increase measurement response if possi-
ble
Reads correctly but occa-
sionally reads high when
vessel is not full
• detecting close range
echo
• build up near top of
vessel or nozzle
• nozzle problem
• clean the antenna
•use Auto False Echo Suppression (2.8.7.1.)
and Auto False Echo Suppression Range
(2.8.7.2.)
Level reading lower than
actual material level
• material is within Near
Range zone
• multiple echoes
processed
• decrease Near Range (2.8.1.) (minimum
value depends on antenna type)
• raise SITRANS LR250
• ensure Algorithm (2.8.4.1.) is set to F (First
echo)
• vessel near empty and
low dK material
• ensure Material (2.2.3.) selection is LIQ-
UID LOW DK
•set Position Detect (2.8.4.2.) to Hybrid
•set CLEF Range (2.8.4.4.) to 0.5 m
Operation Troubleshooting (cont’d)
Symptom Cause Action