Flow Control
MT3809
Brooks Instrument Metal Tube Variable Area Flowmeter
About this part
MT3809 is a Brooks Instrument metal tube variable area flowmeter family used for gas, liquid, and steam service in industrial process applications. Brooks documentation describes the MT3809 as an all-metal variable-area meter suited to high-pressure and high-temperature operating conditions, with configuration-dependent materials, process connections, electronics, alarms, pressure rating, and temperature rating
Configurations vary. Verify the exact unit before choosing a replacement.
Key Facts
ManufacturerBrooks Instrument
Part numberMT3809
Product familyMT3809 Series
Device typeFlowmeter
Configuration statusConfiguration varies
Application classIndustrial automation and process equipment
CategoryFlow Control
Specifications
Identification
| Device type | Metal tube variable area flowmeter |
| Series family | MT3809 / MT3809G metal tube variable area flowmeter family |
Flow
| Measuring principle | Variable area metal tube flow measurement |
| Media | Gas and liquid on the current Brooks variable-area overview; older Brooks data sheets also describe gas, liquid, and steam applications |
| Flow range example | Brooks variable-area overview lists water flow range up to 440 gpm / 100,000 l/h for MT3809 |
Accuracy
| Accuracy range | +/-2% full scale / Class 2.5 VDI / VDE range on the Brooks variable-area overview |
| Repeatability | 0.25% for all options except ELF on the Brooks variable-area overview |
Ratings
| Operating temperature | -198 to 420 C series-level operating temperature range on the Brooks variable-area overview |
| Ingress protection | IP66, IP67, NEMA 4x, and IP65 ratings are listed for MT3809 on the Brooks variable-area overview |
Materials
| Primary meter materials | 316/316L stainless steel primary meter construction is available, with PTFE liner and other corrosion-resistant material options depending on configuration |
Electronics
| Optional electronics | Microprocessor transmitter, transmitter/alarm/pulse-output, inductive alarms, and transmitter with inductive alarms are documented options |
| Smart Meter Manager transmitter | Optional Brooks Smart Meter Manager transmitter supports HART-programmable variables including flow rate, totalization, calibration factors, and high/low alarm parameters |
| Foundation Fieldbus option | MT3809/MT3810 documentation includes Foundation Fieldbus transmitter wiring and setup sections for configured units |
Installation
| Startup caution | After proper installation, initiate flow by slowly opening the valve to avoid a flow surge |
Maintenance
| Routine maintenance | The MT3809/MT3810 manual states there is no routine maintenance required, while component replacement, adjustment, or removal requires specific procedures |
Applications
| Application domain | Industrial gas, liquid, and steam process flow measurement depending on configuration |
Configuration
| Configured-unit rule | Flow range, process connection, transmitter, alarm, material, pressure, and temperature ratings vary by configured model code |
Documentation Downloads
Local PDF copiesPart Photos
67 imagesHistorical archive images for identification, labels, connectors, and condition reference, not current inventory.
Historical Listings & Prices
Historical listing data, not a current offerArchive records43Tracked historical listing records
Historical median price$320.00Based on archived listing records
Recorded price range$72.00 - $710.00Low to high recorded listing price
Local documents2PDF copies available from Sonisys
Recorded price context
The typical recorded price range is $119.99 to $640.29. Based on 43 archived listing records; not a current offer, appraisal, or confirmed sale price.
View archived listing titles
- Brooks MT3809 E2-F749-ZFIS-63 0-13m3 Flow Meter for Industrial Use
- Brooks 3809E13BBHLA1AA MT3809 Stainless GPM Flow Meter 1" Flanged Pipe 300#
- BROOKS MT3809 3809E11BCKAA1B1 FLOW METER T159044
- Brooks 3809EB1AADXAEA1 Flow Meter MT3809
- BROOKS 3809E12CAH3F1AA A/SA182 MT3809 VARIABLE AREA FLOW METER T139703
- Brooks Armored Variable Area Flow Meter MT3809 3809E3ADAGQATA1
Archived listings
Other Part Numbers & Aliases
MT3809Brooks MT3809Brooks Instrument MT38093809GBrooks 3809GBrooks 3809MT3809 SeriesMT3809G / MT3810G