FCI ST80 Series Instruction manual

06EN003490 Rev. B

06EN003490 Rev. B ST80/ST80L Flow Meter
Fluid Components International LLC
Notice of Proprietary Rights
This document contains confidential technical data, including trade secrets and proprietary information which is the property of Fluid Components
International LLC (FCI).Disclosure of this data to you is expressly conditioned upon your assent that its use is limited to use within your company
only (and does not include manufacture or processing uses). Any other use is strictly prohibited without the prior written consent of FCI.
©Copyright2019by Fluid Components International LLC.All rights reserved. FCI is aregistered trademark of Fluid ComponentsInternational LLC.Information subject tochange without notice.

ST80/ST80L Flow Meter 06EN003490 Rev. B
Fluid Components International LLC iii
Table of Contents
Table of Contents......................................................................................................................................................................................iii
List of Figures ...........................................................................................................................................................................................v
List of Tables............................................................................................................................................................................................vii
Typographical Conventions ....................................................................................................................................................................viii
1GENERAL.........................................................................................................................................................................................1
Product Description...........................................................................................................................................................................1
Theory of Operation..........................................................................................................................................................................1
Safety Instructions.............................................................................................................................................................................1
Order Verification..............................................................................................................................................................................1
Technical Specifications....................................................................................................................................................................3
2INSTALLATION.................................................................................................................................................................................7
Instrument Identificationand Outline Dimensions.............................................................................................................................7
ST80 Insertion Sensor Installation....................................................................................................................................................7
ST80L In-Line Process Connection................................................................................................................................................12
Flow Transmitter Electronics Installation.........................................................................................................................................12
Instrument Wiring............................................................................................................................................................................17
Post Installation Check....................................................................................................................................................................26
3OPERATION...................................................................................................................................................................................27
Basic Commissioning and Start-Up................................................................................................................................................27
Configuring the ST80/ST80L...........................................................................................................................................................27
Verify Engineering Units..................................................................................................................................................................31
System Faults, Alarms and Logging Indication...............................................................................................................................31
ST80/ST80L ConfigurationSoftware Application (User Password: 2772)......................................................................................32
Real Time Clock..............................................................................................................................................................................33
Totalizer Setup................................................................................................................................................................................34
Configuring for AST™ or Constant Power Measurement Methods................................................................................................35
Flow Filtering...................................................................................................................................................................................36
NAMUR Setup.................................................................................................................................................................................37
Internal Delta-R Resistor (idR) Check.............................................................................................................................................39
Using Digital Outputs ......................................................................................................................................................................42
HART Operation..............................................................................................................................................................................42
HART Command List Reference.....................................................................................................................................................47
Modbus Operation...........................................................................................................................................................................65
4MAINTENANCE..............................................................................................................................................................................75
Introduction.....................................................................................................................................................................................75
General Maintenance......................................................................................................................................................................75
Power Fuse Replacement...............................................................................................................................................................76
Lithium Battery Replacement..........................................................................................................................................................77

06EN003490 Rev. B ST80/ST80L Flow Meter
iv Fluid Components International LLC
5TROUBLESHOOTING....................................................................................................................................................................79
Non-Maintenance Observations......................................................................................................................................................79
General Function Check.................................................................................................................................................................80
Troubleshooting the Flow Element..................................................................................................................................................81
Verification of the Electronics..........................................................................................................................................................83
Constant Power Configuration Troubleshooting.............................................................................................................................85
Defective Parts................................................................................................................................................................................87
Customer Service............................................................................................................................................................................87
Reference: Error/Status Register Information.................................................................................................................................88
APPENDIX A DRAWINGS..................................................................................................................................................................91
APPENDIX B ADDITIONAL INFORMATION....................................................................................................................................123
Parameters Report from the ST80/ST80L Configuration Application (Sample)............................................................................124
HMI Menu Outline.........................................................................................................................................................................129
ST80/ST80L Configuration Software Menu Outline (v3.2.0.x)......................................................................................................130
Instructions: Installing Sun Shield on ST80/ST80L Integral Enclosure.........................................................................................131
Instructions: Installing Sun Shield on ST80/ST80L Remote Enclosure........................................................................................132
APPENDIX C GLOSSARY................................................................................................................................................................133
Abbreviations................................................................................................................................................................................133
Definitions .....................................................................................................................................................................................133
APPENDIX D APPROVAL INFORMATION......................................................................................................................................135
Safety Instructions.........................................................................................................................................................................139
APPENDIX E CUSTOMER SERVICE..............................................................................................................................................145

ST80/ST80L Flow Meter 06EN003490 Rev. B
Fluid Components International LLC v
List of Figures
Figure 1 – Example Compression Fitting Process Connection.................................................................................................................7
Figure 2 – Compression Fitting Installation, Dimensions..........................................................................................................................8
Figure 3 – Example Flange Mount Installation..........................................................................................................................................9
Figure 4 – Example NPT Pipe Thread Mount Installation.........................................................................................................................9
Figure 5 – Retractable Packing Gland Installation..................................................................................................................................10
Figure 6 – Packing Gland Locking Collar................................................................................................................................................11
Figure 7 – ST80L Process Connection...................................................................................................................................................12
Figure 8 – Integral Electronics Installation (Compression Fitting Shown)...............................................................................................13
Figure 9 – Remote Installation, Mounting Bracket on Wall.....................................................................................................................14
Figure 10 – Remote Installation, Mounting Bracket on 1" – 1½" Pipe....................................................................................................15
Figure 11 – Remote Installation, Mounting Bracket on 2" Pipe...............................................................................................................15
Figure 12 – Remote Installation, Optional Stainless Steel Bracket on 2" Pipe.......................................................................................16
Figure 13 – Recommended Wiring Routing, Base Electronics Enclosure..............................................................................................17
Figure 14 – ST80/ST80L I/O Connector Locations.................................................................................................................................18
Figure 15 – ST80/ST80L Electronics Enclosure Label...........................................................................................................................19
Figure 16 – Bus Configuration 2 mm Jumper Headers and DIP Switch.................................................................................................19
Figure 17 – Input Power Wiring ..............................................................................................................................................................20
Figure 18 – ST80/ST80L Ferrite Core Installation..................................................................................................................................20
Figure 19 – Flow Element Connections, TB1 .........................................................................................................................................21
Figure 20 – HART and Ch. 1 & Ch. 2 4-20 mA Connections, J25..........................................................................................................22
Figure 21 – Single Connection and Multidrop HART Setups..................................................................................................................23
Figure 22 – Modbus/PROFIBUS/Fieldbus Connections, J8...................................................................................................................24
Figure 23 – Modbus Wiring.....................................................................................................................................................................24
Figure 24 – Fieldbus/PROFIBUS Wiring.................................................................................................................................................25
Figure 25 – Hot Key on the Optional HMI Display..................................................................................................................................27
Figure 26 – HMI Display IR Sensor Functions........................................................................................................................................28
Figure 27 – Basic Setup Options, HMI....................................................................................................................................................29
Figure 28 – Instrument Setup Options....................................................................................................................................................29
Figure 29 – Display Setup Options.........................................................................................................................................................30
Figure 30 – Configuration Software Tabs for Basic Setup Functions.....................................................................................................31
Figure31 –ExampleLog,Alarm,andLogging Iconson theOptionalDisplay...............................................................................................32
Figure 32 – The Configurator Welcome Screen .....................................................................................................................................32
Figure 33 – Example Process Data Screen............................................................................................................................................33
Figure 34 – Example Date and Time Set Screen ...................................................................................................................................33
Figure 35 – Example Totalizer Display Showing Total Flow Value.........................................................................................................34
Figure 36 – Totalizer Setup Screen........................................................................................................................................................34
Figure 37 – Example AST Power Mode Tab (Configuration)..................................................................................................................35
Figure 38 – Flow Filtering Setup Screen.................................................................................................................................................36
Figure 39 – Chart: Flow Output Over Time with Various Flow Damping Values....................................................................................37

06EN003490 Rev. B ST80/ST80L Flow Meter
vi Fluid Components International LLC
Figure 40 – NAMUR Fault.......................................................................................................................................................................37
Figure 41 – NAMUR Output Level Selection (4-20 mA User Tab)..........................................................................................................38
Figure 42 – Example idR Check Results Display ...................................................................................................................................39
Figure 43 – Example Internal Delta R Scheduled Screen (After Clicking "Run test now...")..................................................................40
Figure 44 – Example Internal Delta R Test Logs Screen........................................................................................................................40
Figure 45 – Internal Delta-R Resistor Check (idR) HMI Display Sequence............................................................................................41
Figure 46 – Digital Bus Deactivation Warning When Enabling HART....................................................................................................42
Figure 47 – Field Communicator Easy Upgrade Utility, Import DD.........................................................................................................44
Figure 48 – ST80/ST80L Configuration Software Output Tab with Modbus Selected............................................................................65
Figure 49 – ST80/ST80L Configuration Software Modbus Tab, Serial Interface Configuration .............................................................66
Figure 50 – ModScan32, Data Definition................................................................................................................................................68
Figure 51 – ModScan32, Serial Interface and Transmission Mode Configuration..................................................................................69
Figure 52 – ModScan32 Connected to Modbus Device with Registers 4111 and 4112 on Display (Totalizer 1 Count)........................69
Figure 53 – ModScan32 Connected to Modbus Device with Registers 4113 and 4114 on Display (Rollover Count)............................70
Figure 54 – ModScan32 Connected to Modbus Device with Register 4115 on Display (Ceiling Value)................................................70
Figure 55 – ModScan32 Connected to Modbus Device with Register 4117 on Display (Totalizer Reset).............................................71
Figure 56 – ModScan32 Connected to Modbus Device with Register 4118 on Display (Totalizer Start/Stop).......................................71
Figure 57 – Fuse Location, Power Supply Board ...................................................................................................................................76
Figure 58 – Instrument Disassembly for Lithium Coin Cell Battery (CR2450N) Replacement...............................................................78
Figure 59 – Example Heater Values Tab (Diagnostics)..........................................................................................................................82
Figure 60 – System Status LED, Main Board.........................................................................................................................................83
Figure 61 – DMM Hookup to Measure 4-20 mA Output..........................................................................................................................85
Figure 62 – Connecting FES-200 to ST80/ST80L Transmitter...............................................................................................................86
Figure 63 – ST80/ST80L Decade Box Wiring.........................................................................................................................................86
Figure 64 – Tag, Unit Certification, FM (Canada/US), ST80/ST80L.....................................................................................................136
Figure 65 –Tag, Unit Certification, ATEX, IECEx, ST80/ST80L Integral Configuration........................................................................137
Figure 66 –Tags, Unit Certification, ATEX, IECEx, ST80/ST80L Remote Configuration......................................................................138

ST80/ST80L Flow Meter 06EN003490 Rev. B
Fluid Components International LLC vii
List of Tables
Table 1 – Compression Fitting Material....................................................................................................................................................8
Table 2 – Interconnecting Cable Minimum Conductor Size....................................................................................................................17
Table 3 – Modbus Select Jumpers .........................................................................................................................................................25
Table 4 – Modbus Line Configuration Jumpers......................................................................................................................................25
Table 5 – FOUNDATION Fieldbus/PROFIBUS Select Jumpers.................................................................................................................26
Table 6 – FOUNDATION Fieldbus/PROFIBUS Line Configuration Jumpers..............................................................................................26
Table 7 – Flow Parameters, HMI............................................................................................................................................................30
Table 8 – Fatal Faults that Trigger NAMUR............................................................................................................................................38
Table 9 – ST80/ST80L HART Process Variables...................................................................................................................................43
Table 10 – ST80/ST80L HART Field Device Registration Information...................................................................................................43
Table 11 – HART Universal Commands.................................................................................................................................................47
Table 12 – HART Common Practice Commands...................................................................................................................................54
Table 13 – ST80/ST80L HART Device Specific Command Groupings..................................................................................................56
Table 14 – HART Device Specific Commands.......................................................................................................................................56
Table 15 – Command Status Bytes, Bit Assignments ............................................................................................................................62
Table 16 – Command-Specific Response Codes...................................................................................................................................62
Table 17 – Command 48, Additional Device Status Bytes Bit Assignments...........................................................................................63
Table 18 – HART Engineering Units Codes ...........................................................................................................................................64
Table 19 – ST80/ST80L Modbus Function Codes..................................................................................................................................66
Table 20 – ST80/ST80L Modbus Process Data .....................................................................................................................................67
Table 21 – Modbus Service Data............................................................................................................................................................68
Table 22 – ST80/ST80L Modbus Engineering Unit Codes.....................................................................................................................72
Table 23 – ST80/ST80L Modbus Exception Codes................................................................................................................................73
Table 24 – ST80/ST80L Modbus Variables and Registers Map.............................................................................................................73
Table 25 – Power Fuse Summary ..........................................................................................................................................................76
Table 26 – Lithium Coin Cell Battery Summary......................................................................................................................................77
Table 27 – Flow Element Resistance Measurements (In Ohms) Taken From Remote/Integral Electronics..........................................81
Table 28 – Flow Element Resistance (In Ohms) at the Local Enclosure................................................................................................81
Table 29 – Nominal Heater Parameter Ranges......................................................................................................................................82
Table 30 – System Status LED D3 States..............................................................................................................................................83
Table 31 – Instrument Power Supply Voltages.......................................................................................................................................84
Table 32 – CORE Fault Register Definitions ..........................................................................................................................................88
Table 33 – Devices (Sensor x) Status Codes #1 Register......................................................................................................................89
Table 34 – Devices (Sensor x) Status Codes #2 Register......................................................................................................................89
Table 35 – Devices (Sensor x) Status Codes #3 Register......................................................................................................................90
Table 36 – ST80/ST80L Drawings in Appendix A...................................................................................................................................91

06EN003490 Rev. B ST80/ST80L Flow Meter
viii Fluid Components International LLC
Typographical Conventions
Important notes or warnings are shown like the following:
Note:
A note is additional information that adds to or supplements the topic.
Caution:
A caution indicates an action that can cause equipment damage, loss of data or software,or minor injury.
Warning:
A warning indicates an action that can cause equipment damage, or serious injury/death, or both.
Caution symbols that may be marked on the product or its packaging are explained below:
Risk of Danger symbol (observe all warnings and cautions in manual).
Hot Surface Caution symbol (risk of burn from probe heater).
ESD (Electrostatic Discharge) Susceptibility symbol (do not touch without
appropriate precautions).
Static-sensitive Devices symbol (use ESD handling procedures).

ST80/ST80L Flow Meter GENERAL
Fluid Components International LLC 1
1 GENERAL
Product Description
The ST80/ST80L is a thermal dispersion, industrial process grade air/gas flow meter. It is suitable for all air and gas flow measurement applications
in line sizes from 1” to 100” [25 to 2500 mm] and larger. The instrument provides direct mass flow measuring and measures flow rate, totalized flow
and temperature.
The measurements are made available to the user by way of 4-20 mA analog output channels with HART or Modbus (standard) or other pre-selected
digital bus options. The optional graphics display provides real-time process variable values along with flow range and process description information.
There are no moving parts to clean or maintain. A wide selection of process connections are offered to fit with any process piping. Versions are
available for temperature service from -40 °F [-40 °C] to 850 °F [454 °C].
The ST80/ST80L electronics/transmitter can be integrally mounted with the flow sensor or remote mounted up to 1000’ [300m] from the sensor
element. The ST80/ST80L features the FCI exclusive AST™ (patent pending) adaptive sensing technology measuring technique that provides for
improved response time and accurate flow measurement. All ST80/ST80L instruments are precision calibrated in FCI’s world-class, NIST traceable
calibration facility on one ofour flow stands matched to your gas application and actualinstallation conditions.
Theory of Operation
The instrument is functionally based on the thermal dispersion operating principal. With AST™, power to the active RTD sensor’s heater is varied to
maintain a constant Delta T with the reference (unheated) RTD sensor. The flow rate and the heater power needed to maintain Delta T is
proportional. Once the heater current reaches a set maximum, the heater current is maintained as the instrument reads the varying sensor
resistance (Delta R). This resistance is proportional to flow rate. The transition between reading the heater power (constant Delta T) and reading the
sensor resistance (constant power) is seamless and automatic and is the key to the AST™ feature. The differential signal, whether it’s from the
sensor heater power (constant Delta T) or the sensor resistance (constant power) is scaled to drive a 4-20 mA flow output.A second temperature
output, from the unheated reference sensor, drives a second 4-20 mA output.
Safety Instructions
Warning:
Explosion Hazard. Do not disconnect equipment when flammable or combustible atmosphere is present.
●Field wiring shall be in accordance with NEC (ANSI-NFPA 70) or CEC (CSA C22.1) locations as applicable.
●The instrument must be installed, commissioned and maintained by qualified personnel trained in process automation and control
instrumentation. The installation personnel must ensure the instrument has been wired correctly according to the applicable wiring
diagram.
●All location specific installation and wiring requirements must be met and maintained. FCI recommends an input power circuit breaker
be installed between the power source and the flow meter. This facilitates easy power disconnection during commissioning and
maintenance procedures. Use a switch or circuit breaker if the instrument is in a hazardous area.
●The flow meter contains electrostatic discharge (ESD) sensitive devices. Use standard ESD precautions when handling the circuit
board assemblies.
●Hazardous Areas: The instrument is designed for use in hazardous areas. The approved area classification is identified on the
nameplate along with the temperature and pressure limitations. The USBport does not support the hazardous area requirements and
should only be used when the area is declassified. Remove any non-certified parts such as plastic protection caps from cable entry
ports and replace by suitable wiring and cabling system certified by notified bodies for use in hazardous areas.
●When mounting the flow element into the process pipe, it is important that a lubricant/sealant is applied to the mating threads. Use a
lubricant/sealant that is compatible with the process media. Tighten all connections firmly. To avoid leaks do not overtighten or cross-
thread connections.
Order Verification
●Verify the received hardware matches the purchased hardware and application requirements. Verify the model/part number on the
instrument I.D. tag (e.g., ST80L – 43E8000…) matches the purchased model/part number.
●Review the Calibration requirements as specified on the Engineering Data Sheet in the documentation package. Verify the flow,
temperature and pressure limits meet the application requirements.

GENERAL ST80/ST80L Flow Meter
2 Fluid Components International LLC
Hardware - Model Descriptions
ST80 – Single point insertion element with flow and temperature process output
ST80L – In Line element with flow and temperature process output
Documentation and Accessories
06EN003490 ST80/ST80L Installation, Operation, & Maintenance Manual
06EN003491 ST80/ST80L Configuration Software Manual
Calibration Certification Documentation
PC Configuration Software and USBCable
Supplemental Manuals, optional
06EN003492 ST80/ST80L FOUNDATION™ Fieldbus Manual
06EN003493 ST80/ST80L PROFIBUS PA Manual
Supplemental Software, optional
HART DD Files
FOUNDATION Fieldbus
PROFIBUS DD File
PDM/DTMs

ST80/ST80L Flow Meter GENERAL
Fluid Components International LLC 3
Technical Specifications
Instrument
■Measuring Capability
Flow rate, total flow and temperature
■Basic Style
ST80: Insertion
ST80L: In-line (spool piece)
■Flow Measurement Range
Insertion Style: 0.25 SFPS to 1000 SFPS [0,07 NMPS to 305 NMPS]
ST80L In-line: 0.0062 SCFM to 1850 SCFM
[0.01 NMCH to 3,140 NMCH]
– Air at standard conditions; 70 °F and 14.7 psia [21 °C and
1,01325 bar (a)]
■Temperature Measurement Range
Up to 850 °F [454 °C] commensurate with element; see
Operating Temperature in Flow Element specification
■Environmental Conditions
Maximum Relative Humidity: 93%
Maximum Elevation: 6561’ [2000m]
■Media
All gases that are compatible with the flow element material
■Accuracy
Flow:
Gas Specific Calibration: ±1.0% reading, ±0.5% full scale
Temperature:
±2 °F [±1,1 °C] (displayonly, flow rate must be greater than 5
SFPS [1,5 m/sec])
■Response Time (Flow)
1 second to 63% of final value (one step change) typical with –FP
or –FPC type flow element operating in AST mode
■Temperature Coefficient
With optional temperature compensation; valid from 10% to
100% of full scale calibration
Flow: Maximum ±0.015% of reading / °F up to 850 °F
[±0.03% of reading / °C up to 454 °C]
■Repeatability
Flow: ± 0.5% reading
Temperature: ±1 °F [±0.6 °C] (flowrate must be greater than 5
SFPS [1,5 NMPS])
■Turndown Ratio
Normally factory set and field adjustable from 2:1 to 100:1 within
calibrated flow range
■Temperature Compensation
Standard: ±30 °F [±16 °C]
Optional: ±100 °F [±55 °C]
■Agency Approvals
FM, FMc:
Class I, Division 1, Groups B, C, D
Class II, III, Division 1, Groups E, F, G
Class I, Division 2, Groups A, B, C, D
Class II, Division 2, Groups E, F, G
Class III, Division 1, 2
Type 4X, IP66/IP67, T6 Ta = -40°C to 40°C,
T5 Ta = -40°C to 55°C, T4 Ta = -40°C to 60°C
ATEX:
II 2 G Ex db IIC T6...T1 Gb Ta = -40°C to + 60°C
II 2 D Ex tb IIIC T85°C...T450°C Db Ta = -40°C to + 60°C
IECEx:
Ex db IIC T6...T1 Gb Ta = -40°C to + 60°C; IP66/67
Ex tb IIIC T85°C...T450°C Db Ta = -40°C to + 60°C; IP66/67
T6/T85°C: -40°C<Ta<+40°C, T5/T100°C: -40°C<Ta<+55°C,
T4/T135°C: -40°C<Ta<+60°C
Other:
CE Marking
Probe complies with Canadian Electrical code requirements
of ANSI/ISA 12.27.01-2011 as a single seal device.
■SIL/IEC 61508: SIL 1 Compliant, SFF 71.1%to 79.1%
■Calibration: Performed on NIST and and ISO/IEC 17025
traceable flowstands and equipment
■Other: Follows best practices and guidelines as set forth in
ISO 14511; complies with ISO 14164
■Storage Temperature
-76 to 150 °F [-60 to 65 °C]
Flow Element
■Material of Construction
All-welded 316L stainless steel; Hastelloy-C optional
■Operating Pressure
ST80 Insertion Style
Metal ferrule: 1000 psig [69 bar (g)]
Teflon ferrule: 150 psig [10 bar (g)]) (200 °F [93 °C] max.)
Packing gland (low pressure): 50 psig [3.5 bar (g)])
Packing gland (medium pressure): 500 psig [34 bar (g)])
Fixed 1" NPT: 1000 psig [69 bar (g)]
Fixed flange: per flange rating
ST80L In-line Style
Tubing
Sch 40 Pipe
Sch 80 Pipe
psig
bar(g)
psig
bar(g)
psig
bar(g)
F Style Sensor
1"
2400
165
2500
172
3000
207
1½"
1750
121
2500*
172*
2"
1500
103
2250*
155*
S Style Sensor
1"
2400
165
2500
172
2500
172
1½"
1750
121
2500*
172*
2"
1500
103
2250*
155*
* 1½" and 2" Sch 80 available by special order only; contact FCI.
¾" pipealso available by special order.

GENERAL ST80/ST80L Flow Meter
4 Fluid Components International LLC
■Operating Temperature (Process)
ST80 Insertion Style (FPC, FP, and Ssensor head types)
Process Connection
Transmitter
Temp. Service1
CompressionFitting Integral/Remote
Lo:350 °F[177 °C]2
Med: 500°F [260°C]
LowPressurePackingGland Integral/Remote
Lo:350 °F[177 °C]
Med: 500°F [260°C]
Remote
Hi:850 °F [454°C]
Med. Pressure PackingGland Integral/Remote
Lo:350 °F[177 °C]
Med: 500°F [260°C]
Hi:850 °F [454°C]
FixedNPT Integral/Remote
Lo:350 °F[177 °C]
Med: 500°F [260°C]
Remote
Hi:850 °F [454°C]
FixedFlange(1"orDN25) Integral/Remote
Lo:350 °F[177 °C]
Med: 500°F [260°C]
Fixed Flange (≥1½" or ≥DN40) Integral/Remote
Lo:350 °F[177 °C]
Med: 500°F [260°C]
Remote
Hi:850 °F [454°C]
Notes: 1. Minimum temperature is -40 °F [-40 °C].
2. For Teflon ferrule max. temperature is 200 °F (93 °C).
ST80L In-line Style ( Fand Ssensor head types)
-40 °F to 257 °F [-40 °C to 125 °C]
■Model ST80, Process Connections and Insertion Lengths
Compression Fittings: Model ST80 only
¾" or 1" male NPT, stainless steel with adjustable Teflon
ferrule or metal ferrule; or flanged tapped and threaded for ¾"
fitting, ANSI or DIN flanges.
Compression fittings not available with 850 °F [454 °C]
temperature versions of ST80.
Retractable Packing Glands
Low pressure 50 psig [3,5 bar (g)] or medium pressure 500
psig [34 bar (g)] with graphite or Teflon packing material; 1¼"
male NPT or ANSI or DIN flange.
Teflon packing required when process media is ozone, chlorine
or bromine. Remote mount required when medium pressure
packing gland is required.
Fixed Fittings/All Welded
1" male NPT, ANSI or DIN flange
Insertion Length
Field adjustable lengths:
1" to 6"[25 mm to 152 mm]
1" to 12"[25 mm to 305 mm]
1" to 21"[25 mm to 533 mm]
1" to 36"[25 mm to 914 mm]
1" to 60"[25 mm to 1524 mm]
Fixed lengths from 2.6" to 60" [66 mm to 1524 mm]
■Model ST80L, In-line Flow Body and Process Connections
Flow element is calibrated and supplied as a spool-piece; options
include low flow injection tubes and built-in Vortab flow
conditioners for optimum low flow rangeability and performance
Size: 1" diameter tubing; 1", 1½", or 2" Schedule 40 pipe;
1" Schedule 80 pipe
Length: 9 nominal diameters
Process Connections: female NPT, male NPT, ANSI or DIN
flanges, or butt weld prepared
Option: Flanges sized for flow tube
■Remote Transmitter Configurations
Transmitter may be mounted remotely from flow element using
interconnecting cable (up to 1000 ft [300 m]). Remote configura-
tion required with selection of medium pressure packing gland.
Flow Transmitter/Electronics
■Operating Temperature
-40 °F to 140 °F [-40 ° C to 60 °C]
■Input Power
AC: 100 VAC to 240 VAC, 50 Hz to 60 Hz
DC: 24 VDC (19.2 – 28.8 volts)
■Power Consumption
AC:
10 W, 1 Flow Element
DC:
9.6 W, 1 Flow Element
■Battery Backup (for RTC)
Industrial-spec 3V Lithium coin cell type CR2450N
■Outputs
Analog
Standard: Two (2) 4-20 mA outputs*.
4-20 mA outputs are user assignable to flow rate and tempera-
ture; outputs are user programmable to full flow range or subsets
of full flow range.
* Outputs are isolated and have fault indication per NAMUR
NE43 guidelines, user selectable for high (>21.0 mA) or low
(<3.6 mA)
HART (comes standard with analog outputs), V7 compliant.
Digital
Standard: USB (service and configuration port only); Modbus
RS-485
Optional: FOUNDATION Fieldbus H1, PROFIBUS PA, or
PROFIBUS DP.
FF Physical Parameters
Maximum Network Input Voltage - Ui (in V) = 32
Maximum Network Input Current - li (in mA) = 13
■Enclosures
Main Transmitter/Electronics:
NEMA 4X, IP66/67 polyester powder coated aluminum or
optional 316L stainless steel.
Four (4) cable ports ½"-14 NPT or M20 x 1.5
Size: 5" W x 5.40"Hx7.75"L(127mmx137 mmx197mm)
Local Enclosure (Remote Configuration):
•Single cable port enclosure (available with packing gland/low and
med press; ≥1.5" fixed flange; fixed NPT process connections):
NEMA 4X, IP66/67 polyester powder coated aluminum or
optional 316L stainless steel.
One (1) cable port 1"-11.5 NPT
Size:4.68" W x 4.87" H x 5.4" L (119 mm x 124mm x 137 mm)
•Dual cable port enclosure (available with compression fitting;
1" fixed flange process connections):

ST80/ST80L Flow Meter GENERAL
Fluid Components International LLC 5
NEMA 4X, IP66/67 polyester powder coated aluminum or
optional 316L stainless steel.
Two (2) cable ports 1/2"-14 NPT or M20 x 1.5
Size: 3.27" Wx 3.54"H x3.9" L(83mmx90mmx 99mm)
■Readout/Display (Option 1):
•Large backlit 2" x 2" [50 mm x 50 mm] LCD for display of digital
flow rate, analog bar graph of flow rate, total flow, and
temperature; user selectable engineering units,and alarm/fault
status indication.
•User programmable 17 alphanumeric character field
associated with each calibration group.
•Set-Up & Service mode displays text and service codes.
•Display is electronically rotatable in 90° increments to optimize
viewing angle.
Note: For units without the display option, the service port (USB)
lets a PC configure/manage the instrument via the ST80/ST80L
configurator utility.
■Readout/Display and Optical Touch Buttons (Option 2)
Includes the Readout/Display Option 1 items, plus adds four
keypad/buttons for the user interface.
•Four (4) optical touch buttons for user programming of
instrument set-up and service interrogation.
•User programming and setup via the front panel.
•Optical touch button activation through front window – no need
to open enclosure to access or activate.
•Set and adjust the meter or interrogate diagnostics in-situ,
even in HazEx installation.
Other Options
■Vortab Flow Conditioners
Available for all line size applications; standard choice with Model
ST80L (in-line).
■Sun Shield
Shades main transmitter, electronics, and display from direct
sunlight; 316L stainless steel.
FCI P/N 023241-01 Integral transmitter
FCI P/N 023237-01 Remote transmitter
■Ball Valves/Cable Glands
■Certification and Testing Documentation
CMTR, NACE, PMI, 02cleaning, radiography, dye penetrant,
hydrostatic or air pressure test, certificate of origin, certificate of
conformance, wake frequency strength, and more.
■Field Service and Support
Start-up assistance, site commissioning and installation
validation, maintenance agreements, bus communications
integration and validation, and more.

GENERAL ST80/ST80L Flow Meter
6 Fluid Components International LLC
This Page Intentionally Left Blank

ST80/ST80L Flow Meter INSTALLATION
Fluid Components International LLC 7
2 INSTALLATION
Warnings:
●Consult the manufacturer if dimensional information on the flameproof joints is necessary.
●The ambient temperature range and applicable temperature class of the ST80/ST80L flowmeter is based on the
maximum process temperature for a particular application.Refer to page 139 for details.
●The painted surface of an ST80/ST80L flow meter (aluminum housing only) can store electrostatic charge and become
a source of ignition in applications with a low relative humidity < 30% relative humidity where the painted surface is relatively
free of surface contamination such as dirt, dust, or oil. Clean painted surfaces using a damp cloth moistened with water only.
●Do not replace internal battery when an explosive gas atmosphere is present.
Instrument Identificationand Outline Dimensions
APPENDIX A starting on page 91 provides outline dimensions and mounting bracket dimensions for all integral and remote mounted electronic
configurations. Verify all dimensions meet the application requirements before beginning the installation process.
ST80 Insertion Sensor Installation
The proper flow meter location in the process piping configuration is critical to the instrument’s ability to measure the process variables accurately.
FCI recommends 20 nominal pipe diameters upstream and 10 pipe diameters downstream of the instrument installation point for most applications.
These distances can be significantly reduced when the flow meter is combined with FCI’s flow conditioning technology (Vortab).
Insertion flow elements can be mounted into the process using several available customer selectable configurations; compression fitting mounted,
threaded or flanged packing gland mounted, and threaded or flanged fixed “U” length mounted process connections. The specific sensor process
connection is specified by the customer on the order information sheet (OIS).
Mount the flow element to the process piping per the application piping requirements. Orient the instrument so that the flow arrow etched on the
element matches the direction of the process flow with the reference flat parallel to flow within ±3° of rotation. Insert a flow element with variable
insertion length ½” inch past the centerline of the process pipe or tube with the flow direction arrow correctly aligned and leveled. After the flow ele-
ment has been located correctly and tightened into place, verify that the process seal does not leak by slowly applying pressure until the maximum
operation pressure is applied. Check for leaks at the process connection boundary using standard leak detection methods.
Figure 1below shows a properly mounted compression fitting process connection instrument.
Figure 1 – Example Compression Fitting Process Connection

INSTALLATION ST80/ST80L Flow Meter
8 Fluid Components International LLC
Compression Fitting
FCI single point insertion flowmeters are calibrated at the centerline of the process pipe. The flowelement is properly mounted when the
tip of the flowelement is located 0.50 inches (13 mm) past the pipe centerline. See Figure 2below. The scale etched on the side of the
insertion pipe indicates the length to the tip of the flow element.Follow the steps below to install the compression fitting flow element.
1. Calculate the insertion depth using the equation below.
I = Insertion depth
I.D. = Pipe inside diameter
T = Pipe wall thickness
C = Pipe mounting coupling and compression fitting (installed length)
= 0.50" + ..
++
I = __________
2. Mark the insertion pipe at the calculated insertion depth.
Figure 2 – Compression Fitting Installation, Dimensions
3. Apply proper thread sealant to the tapered pipe thread on the compression fitting and secure into pipe mounting coupling.
4. Insert the flow element to the insertion depth mark making sure the orientation flat is aligned parallel to the flow direction. Hand tighten
the compression nut. Compression fitting manufacturer recommends 1¼ turns past hand tight.
5. Tighten the compression nut to the torque specified for the corresponding ferrule material. See Table 1below.
Table 1 – Compression Fitting Material
Ferrule Material
Torque
Teflon
6 ft-lbs
316 SST1
65 ft-lbs1
Note:
The metal ferrule configuration can only be tightened one time. Once tightened, the insertion length is no longer adjustable.

ST80/ST80L Flow Meter INSTALLATION
Fluid Components International LLC 9
Flange Mount
The flange mount flow element is shown in Figure 3below. Attach the process mating flange with care. Correctly orient the flow element's
reference flat to ensure the instrument's calibrated accuracy.
●Verify the process media flow matches the flow direction arrow on the flow element.
●Apply appropriate gasket and or sealant to flange mount as required.
●Mate flow element flange to process flange keeping flat oriented properly.
●Secure flanges with appropriate mounting hardware.
Figure 3 – Example Flange Mount Installation
NPT Pipe Thread Mount
The pipe thread configuration is shown in Figure4below. Apply sealant compatible with the process media to male threads. Carefully insert into
process mounting coupling. Tighten the flow element until snug and continue until flat and flow direction arrow are aligned with process flow.
Figure 4 – Example NPT Pipe Thread Mount Installation
C00991-2-1
REMOTE ENCLOSURE
EXPLOSION PROOF
AGENCY APPROVED
FLANGE,
SIZE AND RATING
CUSTOMER SPECIFIED
FLAT TO SHOW
FLOW ORIENTATION
PIPE
PIPE
C00992-2-1
1" or 1¼" NPT
FLAT TO SHOW
FLOW ORIENTATION
0.50"
[12.6 mm]

INSTALLATION ST80/ST80L Flow Meter
10 Fluid Components International LLC
Retractable Packing Gland Mounting
A retractable low and medium pressure packing gland, with 1¼" MNPT threads or ANSI/DIN flange, and graphite or Teflon packing, is a
process connection option. FCI single point flow meters are calibrated at the centerline of the process pipe. The flow element isproperly
mounted when the tip of the flow element is located .50 inches (13 mm) past the pipe centerline. Followthe below steps to install/retract
instruments with the retractable packing gland option(as applicable to your configuration, also follow the pipe thread or flange mount
procedures as described in previous sections).
1. The scale etched on the side of the insertion probe indicates the length to the tip of the flowelement. Calculate the insertion depth
using the equation, variables, and Figure 5below.
ID = Inside Diameter of Pipe
T = Pipe Wall Thickness
C = Mounting Coupling with Optional Ball Valve and Installed Packing Gland Length
 = .50  +..
2++
INSERTION DEPTH = ______________
Figure 5 – Retractable Packing Gland Installation

ST80/ST80L Flow Meter INSTALLATION
Fluid Components International LLC 11
2. Mark the insertion pipe at the calculated insertion depth.
3. Ball Valve Applications Only: If a ball valve is required, install the ball valve to the process mounting coupling. Close the ball valve
to prevent the process media from leaking out when installing the packing gland with the process line pressurized.
4. Fully retract the insertion probe into the cavityof the packing gland and install the packing gland into the process mounting coupling or
ball valve as described in the previous sections: Flange Mount and NPT Pipe Thread Mount. If a ball valve is not used, make sure
to first depressurize the process line before installing.
5. Tighten the packing nut until the internal packing is tight enough to prevent excess process leakage, but also allow the insertion probe
to be inserted into place. For ball valve applications, open the ball valve after the packing nut hasbeen tightened.
6. Align the orientation flat and flow arrow parallel to the flowdirection and proceed to insert the flowelement into the process media
pipe up to the insertion depth mark. For medium pressure packing gland, use the adjusting nuts on the threaded rods to pull the flow
element up to the insertion depth mark, and then tighten the adjustable nuts against the adjustable support beam to lock the insertion
probe into place. Make sure to move the adjustable nuts at the same time (equally) to prevent the probe from bending and damaging
the packing gland.
7. Tighten the packing nut another ½- to 1-turn tight (approximately 65-85 ft-lbs) untilthe packing has created a full seal.
8. Ensure the locking collar is properly secured to the back of the packing gland. Torque the two¼"-28 socket head cap screws on the
locking collar to 94 in-lbs using a 3/16" hex key.
Retraction/Removal Procedure
1. Loosen the socket head cap screw on the side of the locking collar. See Figure 6below.
Figure 6 – Packing Gland Locking Collar
Caution:
When using hands to restrain the retraction, be prepared for a rapid pressure impulse of the flow element. Make sure
that there are no objects directly behind the flow element as the insertion probe may retract very quickly.
2. Low Pressure (max. 50 psig [3.5 bar(g)]): Slowly loosen the packing nut until the insertion probe begins to retract. Use hands as
needed to help control the retraction. If the probe does not begin to retract itself, gently shake and pull the insertion probe until the
flow element has been fully retracted into the packing gland.
Medium Pressure (max. 500 psig [35 bar(g)]): Loosen the two nuts at the top of the adjustable support rods so that they lie slightly
above the top support beam. Slowly loosen the packing nut until the insertion probe begins to retract. The insertion probe willcome to
rest when the support beam at the top of the probe makes contact with the two top adjustable nuts. Continue to slowly loosen the two
top nuts until the insertion probe has fully retracted into the body of the packing gland. Ifthe insertion probe does not retract when
moving the two top nuts, continue loosening the packing nut until retraction resumes. Make sure to move the two top adjustable nuts
at the same time (equally) to prevent the probe from bending and damaging the packing gland. To lock the probe in a retractedstate,
tighten the top and bottom adjustable nuts against the top support beam.
3. For ball valve applications: Close the ball valve immediately after retraction to seal off the process. After closing the ball valve it is
then safe to remove the flow element from the back end of the ball valve. If a ball valve is not being used, make sure to first
depressurize the process line before removing the flow element.

INSTALLATION ST80/ST80L Flow Meter
12 Fluid Components International LLC
ST80L In-Line Process Connection
The in-line ST80L flow element assembly can be threaded, flanged or butt weld mounted to the process piping. The specific type in-line process
connection is customer-specified on the order information sheet (OIS). See Figure 7below.
Mount the sensor to the process piping per the application piping requirements. Verify the flow direction arrow is pointed inthe correct direction. After
the sensor head has been located correctly and tightened into place, verify the process seal does not leak by slowly applying pressure until the
normal operation pressure is applied. Check for leaks at the process connection boundary.
Figure 7 – ST80L Process Connection
Flow Transmitter Electronics Installation
The instrument electronic transmitter can be an integral part of the flowelement or it can be mounted remotely using a shielded cable between the
flow element and the electronics.
Use power wiring with a minimum 90 °C rating.
ESD Precautions
Caution:
FCI flow meters contain static-sensitive devices. To avoid damage to the instrument observe the ESD precautions
listed below before opening the instrument for wiring.
●Use a wrist band or heel strap with a 1 MΩ resistor connected to ground.
●Use a static conductive mat on the work table or floor with a 1 MΩ resistor connected to the ground when working on the instrument in
a shop setting.
●Connect the instrument to ground.
●Apply antistatic agents such as Static Free made by Chemtronics to hand tools used on the instrument.
●Keep high static-producing items away from the instrument.
The above precautions are minimum requirements. The complete use of ESD precautions can be found in the U.S. Department of Defense
Handbook 263.
C00993-2-1
LINE SIZE "A" LENGTH
1" 9"
1½" 13.5"
2" 18"
FLOW DIRECTION
OPTIONAL
CUSTOMER
PROCESS
CONNECTIONS
BUTT WELD FEMALE NPT MALE NPT
OPTIONAL VORTAB
2x FLANGED
PROCESS CONNECTION
7x DIA. 2x DIA.