Honeywell FlexLine SmartServo 954 User Manual

DENSITY OPTION
278 Service Manual Part No.: 4417340 Revision 1
954 SmartServo FlexLine
Note: The measured displacer weight should not differ more than 0.1
grams from the engraved displacer weight (0.1 gram measuring error by
the displacer weight results in a density error of 0.5 kg/m
3
).
If it is more than 0.1 grams, re-calibrate the force transducer and/or
check the drum unbalance.
Setting of density items
The items mentioned in this section are common for the Tank Profile
and Interface Profile measurement.
Entity name Entity name
(SmartView)
Description
[Displacer weight]
[Displacer weight]
(Product level)
Units: [gram]. Enter the weight of the displacer.
This is engraved on the displacer.
[Displacer
volum]e
[Displacer volume]
(Product level)
Units: [cm
3
]. Enter the volume of the displacer.
This is engraved on the displacer.
[Number of
density levels]
-
Number of levels where a density measurement is
performed (1-50). The default value is 10.
Wire cross
sectional area]
-
Units: [m
2
]. Wire cross sectional area (0.25 * π *
diameter
2
). The default value is 3.1416x10
-9
[m
2
].
Note: This parameter is automatically set correctly
when the correct [Measuring range and wire type]
is chosen (refer to section 7.4.
[Density
compensations]
-
Enables or disables compensations on the density
calculations:
• Tilt: compensates for dynamic tilting of the
gauge by measuring the displacer weight
in vapour before the actual density
measurements.
Note the compensation will only be
performed if the displacer weight can be
measured in vapour, so there must be
enough space. TP requires at least a full
drum rotation +0.25m. IP requires 0.25m.
• Unbalance: compensates for the
unbalance of the drum. This compensation
requires a valid unbalance table (refer to
section 9.1.3)
• Displacer volume: compensates for
hydrostatic pressure on the displacer and
thermal expansion of the displacer.
[Liquid surface
pressure]
-
In high pressure applications (spheres or bullets)
this entity should reflect the pressure in the storage
tank. The default value is atmospheric pressure
(101325 Pa).
[Reset board]
[Reset TII-SRV]
(board)
Reset the TII-SRV to activate the settings.

Honeywell FlexLine SmartServo 954 Specifications

General

Brand	Honeywell
Model	FlexLine SmartServo 954
Category	Measuring Instruments
Language	English

Summary

2 SAFETY AND SECURITY

2.1 General and Safety Conventions

2.3 Safety Instructions and Compliance

2.5 Personal Safety and Handling Warnings

Emphasizes personal safety and critical warnings for instrument handling.

2.7 Working Environment and Skills

Addresses safety in hazardous/safe areas and required technician qualifications.

2.8 Commissioning and Maintenance

Outlines procedures for commissioning and maintenance, including installation and grounding.

2.9 Accordance to Regulations

2.10 Security Considerations

3 PRINCIPAL OF SERVO MEASUREMENT

3.1 Principle of Measurement

Explains the basic principle of servo-based measurement using a displacer and force transducer.

3.1.1 Level Measurement

3.1.2 Interface Between Two Products

3.1.3 Relative Density

3.2 Servo Gauges

Provides an overview of servo gauges, their evolution, and advantages over float gauges.

4 SYSTEM ARCHITECTURE

4.1 Architecture Overview

Describes the system built from interchangeable hardware modules and FlexConn architecture.

4.2 FlexConn Modules

Explains the flexibility and functionality of FlexConn modules as building blocks of the system.

4.3 Entities and Status

4.4 HART SmartView Display

Details the HART SmartView tool for setting and controlling module settings.

4.5 Engauge Service Tool

Describes the Engauge service tool for computer application settings and module configuration.

5 SERVICE TOOLS

5.1 HART SmartView Overview

Introduces HART SmartView as the basic tool for communication and control.

5.2 Engauge Service Tool

Describes the Engauge service tool for computer application settings and module configuration.

6 INSTALLATION

6 INSTALLATION

Outlines preliminary steps and references the Installation Manual for the 954 SmartServo FlexLine.

7 COMMISSIONING

7.1 Pre-Commissioning Checks

Lists essential checks for mechanical and electrical installation before starting commissioning.

7.2 Measuring Drum and Displacer Installation

7.3 Configuring FlexConn Boards

Provides an overview of commissioning information for FlexConn modules and text conventions.

7.3.11 Integrated Display (TII-LCD) Setup

Details the commissioning and display screen configurations for the TII-LCD module.

7.3.12 SIL Overfill and Underfill Protection (FII-SIL)

Introduces the FII-SIL board for overfill and underfill protection, certified for Safety Instrumented Systems.

7.3.13 Errors and Safety Function Status

Details error codes, possible reasons, resolutions, and safety function status definitions.

7.3.14 Commissioning and Proof Testing

Covers commissioning requirements and periodic proof testing procedures for the FII-SIL module.

8 OPERATION

8.1 Repeatability Test

8.2 Lock Test

8.3 Freeze and Block Commands

8.5 Interface Measurement

8.7 Servo Auto Test

Details the Servo Auto Test (SAT) function for reducing overfill/underfill risk and its manual execution.

8.8 Verify Level Calibration

9 MAINTENANCE

9.1 Preventive Maintenance

Outlines available tests for checking maintenance needs like bearing quality and displacer weight.

9.1.1 Check Bearings Command

9.1.2 Measure Displacer Weight

9.1.3 Balance Test

9.1.4 Run-down Test

9.5 Calibrating Force Transducer

9.6 Synchronizing the Reference Encoder

10 954 DENSITY OPTION

10.1 Introduction

10.2 Commissioning

10.2.1 Installation on the Tank

10.2.2 Calibration of the 954 Level Gauge

10.2.3 Setting of Density Items

11 TROUBLE SHOOTING

11.1 Problems with Displacer Movement

11.2 Status Codes

11.2.3 Errors