FCI ST50 User Manual

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Pre-Installation
The ST50 can be specified with integral or remote electronics. The flow element has a serial number etched into the side of the
extension pipe as shown on Figure A. The transmitter circuit card has a serial number noted on the board as shown in Figure B. The
flow sensor and transmitter circuit have been calibrated as a matched set and should be paired together in service unless otherwise
approved by a factory technician.
Flow Direction Alignment
All sensor elements have a flow arrow indicator marked on the element assembly at the reference flat. These flow elements have
been calibrated in a particular direction and are designed to be used in service with the flow arrow facing in the same direction as
flow in the pipe stream. See Appendix C for orientation and factory calibration details.
ST50 MASS FLOW METER
Installation and Operation Guide
Recommended Straight Run
To optimize flow meter system performance, FCI recommends installation with a minimum of 20 pipe diameters upstream straight run
and 10 pipe diameters of downstream straight run. Where straight run limitations significantly reduce the available pipe diameters, FCI
utilizes Vortab flow conditioners to produce a transferable flow profile from the calibration installation to actual field installations.
FCI’s proprietary AVAL software is available to make flow meter installation evaluations where straight run limitations are considered.
See Figure C for recommended installation.
FCI flow meters may be installed with less than the recommended straight run, but may have performance limitations. FCI offers
Vortab flow conditioners for use in applications that have significant straight run limitations. FCI uses the AVAL application modeling
software to predict meter performance in each installation. AVAL outputs are available to review prior to order placement and will
indicate performance expectations both with and without Vortab Flow Conditioning.
Figure C
Figure A Figure B
Flow Direction
Serial Number
FLOW

FCI ST50 Specifications

General

Type	Thermal Mass Flow Meter
Manufacturer	FCI
Media	Gas
Accuracy	±1% reading, ±0.5% full scale
Repeatability	±0.5% reading
Temperature Range	-40°C to +85°C (-40°F to +185°F)
Enclosure	NEMA 4X (IP66)
Approvals	ATEX, IECEx
Insertion Length	Customizable
Operating Temperature	-40°C to +85°C (-40°F to +185°F)
Storage Temperature	-40°C to +85°C (-40°F to +185°F)
Weight	Varies with configuration
Dimensions	Varies with configuration

Summary

Pre-Installation

Flow Direction Alignment

Ensure sensor elements align with flow direction for accurate calibration.

Recommended Straight Run

FCI recommends 20 pipe diameters upstream and 10 downstream for optimal performance.

Specifications

Instrument Specifications

Details on media compatibility, range, accuracy, compensation, approvals, and warranty.

Flow Element Specifications

Covers installation, material, pressure/temperature limits, and process connections.

Flow Transmitter Specifications

Enclosure, output signals, input power, communication, and operating temperature.

Installing Flow Element

Compression Fitting Mounting

Guidance on mounting the flow element using compression fittings with Teflon or metal ferrules.

Element Installation and Length Adjustment

Diagram and notes for precise element positioning relative to pipe centerline.

Retractable Packing Gland Mounting

Insertion Depth Calculation

Formula and diagram for calculating the correct insertion depth for the flow element.

Retraction/Removal Procedure

Element Retraction Steps

Steps to loosen fittings and retract the flow element safely from the process.

Instrument Wiring and Setup

ESD Precautions

Essential precautions for handling the instrument to prevent electrostatic discharge damage.

Input Power Configurations

Details on VDC and VAC input power configurations and wiring requirements.

Wiring Diagrams and IO Board Details

VDC Power Connection and IO Board

Diagram for VDC power input and analog/pulse output connections.

VAC Power Connection and IO Board

Diagram for VAC power input and analog/pulse output connections.

Pulse Output Configuration

Pulse Output Activation and Setup

Configuration options for pulse output, including modes, factor, and sample time.

Pulse Output Functions

Explanation of alarm, counter, and flow rate functions for pulse outputs.

Pulse Output Wiring

Source Output Wiring

Diagram illustrating the wiring for a source mode pulse output.

Sink Output Wiring

Diagram illustrating the wiring for a sink mode pulse output.

Setup Interface and RS232

RS232 Interface Configuration

Settings for connecting and configuring the instrument via RS232.

Startup and Commissioning

Typical FC88 Commands

Common commands used with the FC88 communicator for startup and commissioning.

Flow Unit Modification Example

Procedure for setting flow units and pipe dimensions using the 'Z' menu.

Menu Structure and Configuration Tables

Diagnostics and Factory Settings (Table 1)

Overview of diagnostic and factory setting menus (C, D, K, R).

Units and Scaling Setup (Table 2 - Z Menu)

Configuration of flow units, pipe size, and scaling parameters.

Output Configuration Setup (Table 3 - V Menu)

Setup options for analog outputs and pulse output configurations.

V Menu Output Configuration

Analog Output Configuration

Detailed steps for configuring 4-20mA outputs and NAMUR modes.

Pulse Output Configuration

Steps for setting up pulse output source, sink, factor, and sample period.

V Menu Output Configuration Continued

Sample Period and State Configuration

Setting sample period, source state, and sink state for pulse outputs.

Maintenance Procedures

Calibration and Electrical Checks

Guidelines for calibration, inspecting connections, wiring, and seals.

Flow Element Inspection

Periodic removal and inspection of the flow element for debris and damage.

Troubleshooting Guide

Application Verification

Reviewing application parameters to ensure calibration matches process media.

Installation and Process Condition Checks

Verifying installation and comparing process conditions with standard values.

Calibration Verification

Diagnostic Test Sequence

Using the 'D' menu to examine parameters against the Delta R data sheet.

Hardware Verification

Fuse and Cable Seating Checks

Verifying fuse continuity and seating of interconnecting cables.

Hardware Verification Continued

Sensor Element Continuity Check

Checking resistance of sensor element wires for continuity and correct values.

Transmitter Circuit Calibration

Delta R Verification Procedure

Steps for verifying transmitter calibration using resistance decade boxes and DVM.

Appendix A - Approval Information

EU Declarations of Conformity

EU Declarations for EMC, LVD, PED, and RoHS directives.

Appendix B - Command Lists

Single Letter Commands (Table 5)

Reference for single-letter commands used for instrument configuration.

CLI Commands (Table 6)

Reference for Command Line Interface (CLI) commands.

Appendix B - Command Lists Continued

CLI Commands Continuation (Table 6)

Continuation of the CLI commands list with descriptions and data types.

Command Line Interface Usage

CLI Examples and Syntax

Illustrates how to use Read and Write functions within the CLI.

Appendix C - Drawings

Integral Horizontal Mountings

Diagrams showing various horizontal mounting orientations for integral transmitters.

Integral Vertical Mountings

Diagrams showing various vertical mounting orientations for integral transmitters.

Outline and Installation Drawings

Local Probe Configuration Drawing

Drawing details for the local probe configuration, including dimensions and fittings.

Remote Enclosure Configuration Drawing

Drawing details for the remote enclosure configuration, including dimensions and connections.

Wiring Diagrams - Integral Units

AC Input Wiring Diagram

Diagram for AC input power and analog/pulse output connections for integral units.

DC Input Wiring Diagram

Diagram for DC input power and analog/pulse output connections for integral units.

Wiring Diagrams - Remote Units

Remote AC Power Wiring

Wiring diagram for remote electronics with AC power input.

Remote DC Power Wiring

Wiring diagram for remote electronics with DC power input.

Appendix D - Customer Service

Technical Support Contact Information

Details on how to contact FCI for technical support via mail, phone, fax, and email.

Customer Service Procedures

Warranty Repairs and Returns

Policy for handling warranty repairs and returns, including shipping responsibilities.

Field Service Procedures and Rates

Information on requesting field service and associated billing rates.

Return Authorization Request Form

Customer and Product Information

Fields for customer contact, product details, and failure symptoms.

Return Reason and Payment

Options for return reason and payment methods for repairs.

Return Procedures and Decontamination

Packing and Shipping Guidelines

Guidelines for safely packing instruments for return shipment.

Decontamination Certification

Requirement for certifying that the instrument has been cleaned of hazardous materials.

Instrument Warranty Details

Warranty Terms and Limitations

Details on warranty coverage, exclusions, and buyer responsibilities.