MT3809 Series Metal Tube Variable Area Flow Meters

Widest temperature, pressure and process range. One proven flow meter.

Models 3809G / 3809G ELF / 3809G TFE Lined / 3810G

Engineered to work where you need it: Choose the MT3809 variable area (VA) flowmeter for all the high-pressure, high-temperature VA flow measurement and control requirements on your next project.

Proven to deliver reliable, repeatable gas and liquid flow measurement and control in thousands of installed locations, the MT3809 is practical and economical, making it the “go-to” choice for Engineering Procurement Contractors (EPC) and major industrial facilities worldwide.

The MT3809G configuration features a digital LCD display with local operator interface, providing valuable process outputs such as totalization and alarm signals. It also lets users make parameter changes without removing the cover, which means changes can be made even in hazardous areas.

Questions?

Talk to one of our application engineering experts by calling: 1-888-554-3569

For pricing information:

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MT3809 Series Data Sheet

Features

Flow meter offers extremely wide range of flow ratings - supports very low to very high flow rates
Temperature ratings from -325°F to 788°F (-198°C to 420°C )
Pressure ratings up to 6,000 psi (standard products) and up to 20,000 psi (custom models)
Enhanced LCD display with local operator interface (optional)
High-/low-flow alarm functions that meet SIL 2 requirements
316SS stainless steel flameproof housing meets ATEX gas group IIC/Class 1 Div 1 hazardous area rating
Selection of corrosion resistant wetted materials and indicator housing to fit demanding application needs
Gasket sealing surface meets ASME requirements, no special gaskets required
Flow transmitters are available with HART® 7 or FOUNDATION^TM Fieldbus capability and have worldwide approvals

Benefits

Repeatable flow measurement even at very low process temperatures and the highest process temperatures of any VA meter
Designed to meet ASME B31.3 – a requirement requested at the world’s major industrial facilities
Product documentation, material traceability and project planning perfectly blends with the needs of EPC system integrators
No power required – reduces usage cost and installation complexity
A reliable flow measurement technology that can communicate to control systems over analog or digital interfaces even when power is not available
Broad pressure and temperature range enables choosing one meter for multiple uses
Excellent reliability and dependability – in use for decades worldwide
Globally approved for use in explosive, hazardous environments, meeting the highest international explosion safety requirements
Multiple connection options for easier installation
Unique flange design avoids the need for special gaskets
Weldneck flanges are standard and can be examined for integrity
FOUNDATION™ Fieldbus transmitter qualified by EMERSON seamlessly connects to Delta V control system and AMS device manager. Access the install kits here then search for "Brooks 3809G"

Applications

Basic liquid or gas flow measurement
Flare stacks at petroleum refineries and oil or natural gas wellheads
Monitoring lubrication and/or coolant for rotating equipment
Measurement of additives
Monitoring gases for furnaces
High-pressure flow on offshore oil platforms
Chemical injection

Product Type

Metal Tube Variable Area Flow Meter

Differentiator

Repeatable flow measurement even at low process temperatures down to -198°C / -325°F and high process temperatures up to 420°C / 788°F

Designed for high process pressures 1379 bar(a) / 20,000 psig

Customers can rely on a proven flow measurement technology that works when electrical power is not available and at the same time communicate to control systems over analog- or digital interfaces

Optional local operator interface with LCD screen for easy operator control and alarm functions that meet SIL2 requirements

A selection of corrosion resistant wetted materials and indicator housings to fit your demanding applications

Product is designed to meet ASME B31.3 which is a requirement requested at the world’s major industrial facilities.

Product documentation, material traceability and project planning perfectly blends with the needs of Engineering Procurement Contractors (EPC) system integrators

Performance

Flow Range (Full Scale Capacity)

Refer to Capacity Tables in Data Sheet

Water

440 gpm / 100,000 l/h

Air

750 scfm / 1200 m3n/hr

Pressure Drop

See Capacities & Pressure Drop Tables in Data Sheet

Accuracy

±2% Full Scale / Class 2.5 VDI / VDE

±1% Full Scale / Class 1.6 VDI / VDE

±5% Full Scale / Class 4 VDI / VDE

±3% Full Scale / Class 2.5 VDI / VDE

Repeatability

All options except ELF: 0.25% Full Scale

ELF: 1% Full Scale

Mechanical

Metering Tube Material

316 Stainless Steel

Scales

Single or Dual Detachable Aluminum Plate

Scale Graduations

Choice of direct reading units or percentage of maximum flow with factor tag.

Float Material

316L Stainless Steel, Alloy 625, Hastelloy C-276, Titanium GR II, Monel K-500, PVDF

Housing

Die cast Aluminum (Alloy 380) with Epoxy Paint Coating with glass window

Die cast Aluminum (Alloy 380) with Epoxy Paint Coating with shatterproof glass window

Cast 316 Stainless Steel with glass window

Cast 316 Stainless Steel with shatterproof glass window

O-Ring Materials

Flange option or Male NPT: No O-rings

Female threaded options: Viton fluoroelastomer, Kalrez fluoroelastomer, PTFE Teflon

Connection Materials

316L Stainless Steel, Alloy 625, Hastelloy C-276, Titanium GR II

Process Connections

All materials: NPT, Rc (BSP) Female

All materials: 150#, 300#, 600# Flanges per ASME B16.5

All materials: DIN PN40 Flanges

All materials: JIS B2220 DIN 10K, 20K Flanges

Optional Equipment

Ratings

Max Pressure

Refer to Pressure/Temperature Tables in Data Sheet

PED Categories

Refer to PED Categories in Capacity Tables in Data Sheet

Ambient Temperature Range

Refer to temperature cut-off tables by option in Data Sheet

Max Temperature Range

Meter

-325 to 788°F
-198 to 420°C

Fluid Temperature Range

Refer to temperature cut-off tables by option in Data Sheet

Diagnostics & Display

Transmitter

4 - 20 mA with HART Communications

Alarms

Inductive Switch - All Sizes

Electrical

Analog Communication

Transmitter

4-20 mA

Digital Communication

HART® 7
FOUNDATION^TM Fieldbus (EMERSON™ qualified for Delta V control system and AMS device manager)

Compliance

Certifications/Approvals

International agency approvals for alarm and transmitter

SIL 2 for alarm option

International Calibration Certificate (ICC)

Material certifications

Liquid Dye Penetrant

Positive Material Identification

NACE MR 01-75 & MR 0103

Pressure Test certificate

Oxygen Cleaning certificate

Certificate of Conformance

	3809G	3809G ELF	3809G TFE Lined	3810G
Differentiator	Flow Meter	Flow Meter	Flow Meter	Flow Meter
Fluid Type	Clean Liquids Gas Steam	Clean Liquids Gas Steam	Clean Liquids Gas Steam	Clean Liquids Gas Steam
Flow Range (Full Scale Capacity)	Flow Range - Water: 440 GPM / 100,000 l/h Flow Range - Air: 750 SCFM / 1200 m3n/hr	Flow Range - Water: 11 GPH / 42 l/h Flow Range - Air: 53 SCFH / 1.4 m3n/hr	Flow Range - Water: 66 GPM / 15,000 l/h Flow Range - Air: 280 SCFM / 470 m3n/hr	Flow Range - Water: 88 GPM / 20,000 l/h Flow Range - Air: 390 SCFM / 650 m3n/hr
Accuracy	+/- 2% Full Scale / Class 1.6 VDI / VDE +/- 1% Full Scale	+/- 5% Full Scale / Class 4 VDI / VDE +/- 3% Full Scale / Class 2.5 VDI / VDE	+/- 2% Full Scale / Class 1.6 VDI / VDE	+/- 5% Full Scale / Class 4 VDI / VDE +/- 3% Full Scale / Class 2.5 VDI / VDE
Max Pressure	6000 PSIG / 413.7 bar	6000 PSIG / 413.7 bar	Based on selected flange rating	2567 PSIG / 177 bar
Wetted Materials	316 / 316L Stainless Steel, Alloy 625, Hastelloy C-276, Titanium GR II	316 / 316L Stainless Steel, Alloy 625, Hastelloy C-276, Titanium GR II	316/316L Stainless Steel with Tefzel lining	316 / 316L Stainless Steel,
Process Connections	All materials: NPT, Rc (BSP) Female All materials: 150#, 300#, 600# Flanges per ASME B16.5 All materials: DIN PN40 Flanges All materials: JIS B2220 DIN 10K, 20K Flanges	All materials: NPT, Rc (BSP) Female All materials: 150#, 300#, 600# Flanges per ASME B16.5 All materials: DIN PN40 Flanges All materials: JIS B2220 DIN 10K, 20K Flanges	NPT (Female)	NPT, Rc (BSP) Female 150#, 300# Flanges per ASME B16.5 DIN PN40 Flanges
Analog Communication	Transmitter 4-20 mA Output	Transmitter 4-20 mA Output	Transmitter 4-20 mA Output	None
Digital Communication	HART® 7 FOUNDATION^TM Fieldbus (EMERSON™ qualified)	HART® 7 FOUNDATION^TM Fieldbus (EMERSON™ qualified)	HART® 7 FOUNDATION^TM Fieldbus (EMERSON™ qualified)	HART® 7 FOUNDATION^TM Fieldbus (EMERSON™ qualified)
Alarms	One or two inductive switches - All Sizes	One or two alarm contacts with transmitter - All Sizes	One or two inductive switches - All Sizes	None
Certifications/Approvals	Indicator IP66/67, NEMA 4X Flame Proof IP66/67, NEMA 4X Intrinsic Safety / Non-sparking / Enclosure Dust / Aluminum housing IP64 Intrinsic Safety / Non-sparking / Enclosure Dust / 316 Stainless Steel housing IP66/67 International agency approvals for alarm and transmitter SIL 2 for alarm option International Calibration Certificate (ICC) Material certifications Liquid Dye Penetrant Positive Material Identification NACE MR 01-75 & MR 0103	Indicator IP66/67, NEMA 4X Flame Proof IP66/67, NEMA 4X Intrinsic Safety / Non-sparking / Enclosure Dust / Aluminum housing IP64 Intrinsic Safety / Non-sparking / Enclosure Dust / 316 Stainless Steel housing IP66/67 International agency approvals for alarm and transmitter International Calibration Certificate (ICC) Material certifications Liquid Dye Penetrant Positive Material Identification NACE MR 01-75 & MR-0103	Indicator IP66/67, NEMA 4X Flame Proof IP66/67, NEMA 4X Intrinsic Safety / Non-sparking / Enclosure Dust / Aluminum housing IP64 Intrinsic Safety / Non-sparking / Enclosure Dust / 316 Stainless Steel housing IP66/67 International agency approvals for alarm and transmitter SIL 2 for alarm option International Calibration Certificate (ICC) Material certifications Liquid Dye Penetrant Positive Material Identification NACE MR 01-75 & MR 0103 Pressure Test certificate Oxygen Cleaning certificate Certificate of Conformance	Indicator IP66/67, NEMA 4X International Calibration Certificate (ICC) Material certifications
Functional Safety Approvals	SIL 2 - Alarms	None	SIL 2 - Alarms	None

Filename	File Type	Documents By Language
Data Sheet	pdf	English Chinese German Russian
Mean Time Before Failure Calculation	pdf	English
Mean Time Before Failure Calculation with Transmitter	pdf	English
Installation & Operation Manual	pdf	English
Quick Start Guide	pdf	English
FOUNDATION™ Fieldbus Supplemental Manual - MT3809 Series	pdf	English
HART® Supplemental Manual - MT3809 Rev G	pdf	English
Safety Supplemental Manual	pdf	English
CE EU Declaration of Conformity Certificate	pdf	English

Use the following guide (model code information from data sheet) to translate the CAD configurations available below. If you need assistance or can’t find what you’re looking for, please contact Applications Engineering or your local Brooks Instrument representative.

Example: 3809G - A - 07 - A - 1 - A - 0

Meter Series

Construction

Meter & Connection Sizes

Connection Type

Indicator Configuration

Electronics

Valve/Flow Controller

3809G

A - Flange RF Std

B - Flange RF Oversized

C - Flange RF 2x Oversized

D - Threaded Female Std

E - Threaded Female 2500 lbs

F - Threaded Male

See data sheet

A - NPT-Female w/Viton O-Rings

B - NPT-Female w/Teflon O-Rings Low Flow Valve on Inlet - Typical for Sizes 0, 1, 2

See data sheet

1 - Aluminum Housing

2 - 316SS Housing

See data sheet

A - Indicator only

B - Inductive Alarm, 1 Switch

See data sheet

0 - None

A - Valve on Inlet - Viton Seals

Filename	File Type
3809G-A-02-F-1-A-0-F	DXF
3809G-A-02-F-1-A-0-F	IGS
3809G-A-02-F-1-A-0-F	STEP
3809G-A-07-F-1-H-0	DXF
3809G-A-07-F-1-H-0	IGS
3809G-A-07-F-1-H-0	STEP
3809G-A-07-G-6-H-0	DXF
3809G-A-07-G-6-H-0	IGS
3809G-A-07-G-6-H-0	STEP
3809G-A-07-J-1-D-0	DXF
3809G-A-07-J-1-D-0	IGS
3809G-A-07-J-1-D-0	STEP
3809G-A-08-F-1-C-0	DXF
3809G-A-08-F-1-C-0	IGS
3809G-A-08-F-1-C-0	STEP
3809G-A-10-F-1289-A-0	stp
3809G-A-10-F-1289-A-A	stp
3809G-A-10-J-3-D-0	DXF
3809G-A-10-J-3-D-0	IGS
3809G-A-10-J-3-D-0	STEP
3809G-A-12-G-6-D-3-0	IGS
3809G-A-12-G-6-D-3-0	DXF
3809G-A-12-G-6-D-3-0	STEP
3809G-A-13-F-1289-A-0	stp
3809G-A-15-F-1-A-0	stp
3809G-A-15-J-3-B-0	DXF
3809G-A-15-J-3-B-0	IGS
3809G-A-15-J-3-B-0	STEP
3809G-A-16-J-3-B-0	DXF
3809G-A-16-J-3-B-0	IGS
3809G-A-16-J-3-B-0	STEP
3809G-A-D-07-B-1-B-0	DXF
3809G-A-D-07-B-1-B-0	IGS
3809G-A-D-07-B-1-B-0	STEP
3809G-B-08-H-1-A-0	DXF
3809G-B-08-H-1-A-0	IGS
3809G-B-08-H-1-A-0	STEP
3809G-B-10-F-1289-A-0	stp
3809G-B-10-F-1289-A-AB	stp
3809G-B-12-F-3-4-0	DXF
3809G-B-12-F-3-4-0	IGS
3809G-B-12-F-3-4-0	STEP
3809G-B-12-F-6-D-3-0	DXF
3809G-B-12-F-6-D-3-0	IGS
3809G-B-12-F-6-D-3-0	STEP
3809G-B-C-07-J-0	DXF
3809G-B-C-07-J-0	IGS
3809G-B-C-07-J-0	STEP
3809G-C-07-G-2-A-0	DXF
3809G-C-07-G-2-A-0	IGS
3809G-C-07-G-2-A-0	STEP
3809G-C-08-F-6-D-3-0	DXF
3809G-C-08-F-6-D-3-0	IGS
3809G-C-08-F-6-D-3-0	STEP
3809G-D-00-B-3-D-3-B	DXF
3809G-D-00-B-3-D-3-B	IGS
3809G-D-00-B-3-D-3-B	STEP
3809G-D-0102030405-ABCD-1289-A-0	stp
3809G-D-0102030405-ABCD-1-BCDEFGMNPQ-0	stp
3809G-D-0102030405-ABCD-3-BCDEFGMNPQ-EF	stp
3809G-D-03-A-1-A-0	DXF
3809G-D-03-A-1-A-0	IGS
3809G-D-03-A-1-A-0	STEP
3809G-D-07-ABCD-1289-A-A	stp
3809G-D-0708-ABCD-1289-A-0	DXF
3809G-D-0708-ABCD-1289-A-0	IGS
3809G-D-0708-ABCD-1289-A-0	STEP
3809G-D-0708-ABCD-1-BCDEFGHJKLMNPQRSTU-00	stp
3809G-D-0708-ABCD-1-BCDEFGHJKLMNPQRSTU-AB	STP
3809G-D-0708-ABCD-1-BCDEFGHJKL-AB	DXF
3809G-D-0708-ABCD-1-BCDEFGHJKL-AB	IGS
3809G-D-0708-ABCD-1-BCDEFGHJKLMNPQRSTU-AB	STP
3809G-D-07-B-1-A-B	DXF
3809G-D-07-B-1-A-B	IGS
3809G-D-07-B-1-A-B	IGS
3809G-D-08-AB-1289-A-A	stp
3809G-D-08-AB-1289-A-C	stp
3809G-D-08-ABCD-3-BCDEFGMNPQ-0	stp
3809G-D-10-AB-1289-A-A	stp
3809G-D-10-ABCD-1289-A-0	stp
3809G-D-12-A-1-A-0	DXF
3809G-D-12-A-1-A-0	IGS
3809G-D-12-A-1-A-0	STEP
3809G-D-12-A-1-BCDEFGMNPQ-0	stp
3809G-D-13-AB-1289-A-0	stp
3809G-E-08-ABCD-3-BCDEFGMNPQ-0	stp
3809G-E-10-AB-3-BCDEFGMNPQ-0	stp
3809G-E-10-B-2-A-0-0	DXF
3809G-E-10-B-2-A-0-0	IGS
3809G-E-10-B-2-A-0-0	STEP
3809G-E-10-B-3-D-0	IGS
3809G-E-10-B-3-D-0	DXF
3809G-E-10-B-3-D-0	STEP
3809G-E-12-B-3-D-0	DXF
3809G-E-12-B-3-D-0	IGS
3809G-E-12-B-3-D-0	STEP
3809G-F-0708-E-1289-A-0	stp
3809G-G-08-B-1-A-0	DXF
3809G-G-08-B-1-A-0	IGS
3809G-G-08-B-1-A-0	STEP
3810G-A-12-F-1-A-0	DXF
3810G-A-12-F-1-A-0	IGS
3810G-A-12-F-1-A-0	STEP

MT3809 Series Metal Tube Variable Area Flow Meters

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Features

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Applications

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