Siemens Sitrans LR250 User Manual

Installing/mounting
4.1 Basic safety information
SITRANS LR250 (PROFIBUS PA)
Operating Instructions, 08/2014, A5E32221386-AC
23
Note
•
The process connection tag shall remain with the process pressure boundary assembly.
(The process pressure boundary assembly comprises the components that act as a
barrier against pressure loss from the process vessel: that is, the combination of process
connection body and emitter, but normally excluding the electrical enclosure). In the event
the device package is replaced, the process connection tag shall be transferred to the
replacement unit.
•
SITRANS LR250 units are hydrostatically tested, meeting or exceeding the requirement of
the ASME Boiler and Pressure Vessel Code and the European Pressure Equipment
Directive.
Note
•
The serial numbers stamped in each process connection body, (flange, threaded, or
sanitary), provide a unique identification number indicating date of manufacture.
Example: MMDDYY – XXX (where MM = month, DD = day, YY = year, and XXX=
sequential unit produced)
•
Further markings (space permitting) indicate flange configuration, size, pressure class,
material, and material heat code.
4.1.1.1
Pressure Equipment Directive, PED, 97/23/EC
Siemens Level Transmitters with flanged, threaded, or sanitary clamp type process mounts have
no pressure-bearing housing of their own and, therefore, do not come under the Pressure
Equipment Directive as pressure or safety accessories (see EU Commission Guideline 1/8 and
1/20).

Siemens Sitrans LR250 Specifications

General

Accuracy	± 2 mm
Power Supply	10.5 to 42 V DC
Measurement Principle	Radar
Process Temperature	-40 to +80 °C
Process Pressure	Up to 40 bar
Output Signal	4 to 20 mA HART
Communication	HART
Enclosure Rating	IP68
Housing Material	Aluminum, stainless steel

Summary

Safety Information

Qualified Personnel

Safety Information

Preconditions for Safe Use

Stresses observing instructions and device symbols for safe operation.

Improper Device Modifications

Use in Hazardous Areas

Details qualifications required for personnel working in hazardous areas.

Installing/Mounting

Pressure Applications

Installation Location Requirements

Proper Mounting

Gives general notes and notices for correct mounting procedures.

Nozzle Design

Details nozzle design requirements and recommendations for various antenna types.

Installation Instructions

Threaded Versions

Flanged Versions

Hygienic Versions

Disassembly

Connecting

Connecting SITRANS LR250

Gives warnings about power source and loss of protection due to installation.

Wiring Setups for Hazardous Area Installations

Outlines the three wiring options for hazardous areas.

Intrinsically Safe Wiring

Details intrinsically safe wiring and ATEX certificate information.

Non-Sparking Wiring

Non-Incendive Wiring (US/Canada only)

Instructions Specific to Hazardous Area Installations

Lists ATEX directive instructions for equipment safety in hazardous areas.

Commissioning

Operating via the Handheld Programmer

Quick Start Wizard via the Handheld Programmer

Provides notes and instructions for using the Quick Start Wizard.

Remote Operation

Operating via SIMATIC PDM

Introduces SIMATIC PDM as a software for device commissioning and maintenance.

Configuring a New Device via SIMATIC PDM

Explains how to configure a new device using SIMATIC PDM.

Quick Start Wizard via SIMATIC PDM

Guides through the Quick Start wizard using SIMATIC PDM.

Changing Parameter Settings using SIMATIC PDM

Explains how to change parameter settings using SIMATIC PDM.

Echo Profile Utilities

Parameter Reference

Parameter Reference

Provides notes on parameter names, menu structure, and quick access.

Language (1.1.)

Lists parameters related to Quick Start, Language, Material, Response Rate, Units, and Operating Mode.

Material (2.3.5.)

Details Material, LOE Timer, and Calibration parameters.

Low Calibration Pt. (2.3.7.1.)

Explains Low Calibration Pt. and High Calibration Pt. parameters.

Response Rate (2.3.8.1.)

Details Response Rate, Fill Rate, and Empty Rate parameters.

Vessel Shape (2.4.1.1.)

Explains Linearization and Vessel Shape parameters.

Near Range (2.5.1.)

Covers Near Range and Far Range parameters for signal processing.

Auto False Echo Suppression (2.5.10.1.)

Details TVT Setup and Auto False Echo Suppression parameters.

Device Address (5.1.)

Explains how to set the PROFIBUS address and notes on address lock.

Write Protection (6.2.1.)

Service and Maintenance

Basic Safety Information

Provides safety warnings regarding impermissible repair and releasing key locks.

Maintenance and Repair Work

Outlines periodic inspection points and safety warnings for maintenance in hazardous areas.

Diagnosing and Troubleshooting

Communication Troubleshooting

Provides steps to troubleshoot communication issues, including wiring and addresses.

Device Status Icons

General Fault Codes

Lists general fault codes, their meanings, and corrective actions.

Operation Troubleshooting

Details common operating symptoms, causes, and resolutions.

Technical Data

Performance

Approvals

Dimension Drawings

Appendix A: Technical Reference

Principles of Operation

Echo Processing

Explains the signal processing technology known as Process Intelligence.

Position Detect

CLEF Range

Echo Lock (2.5.8.1.)

Explains Echo Threshold and Echo Lock parameters.

Auto False Echo Suppression

Introduces Auto False Echo Suppression and its purpose.

Measurement Range

Details Near Range and Far Range parameters for measurement.

Damping

Explains Measurement Response and Damping parameters.

Loss of Echo (LOE)

Explains Loss of Echo (LOE) and its conditions.

Appendix C: Communications via PROFIBUS

Device Configuration

Network Configuration

PROFIBUS Address

Explains PROFIBUS address identification and setting.

Cyclic Data

Status Byte

Condensed Status

Extended Mode Diagnosis

Acyclic Extended Diagnostics (General Fault Codes)

LCD Menu Structure