MT3809 Metal Tube Flow Meters
Widest temperature, pressure and process range. One proven flow meter.
Engineered to work where you need it: Choose the MT3809 variable area flow meter 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.
Read about the roles and advantages of the MT3809G flow meter in Oilfield Technology Magazine.
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 FOUNDATIONTM Fieldbus capability and have worldwide approvals
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
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 then search for "Brooks 3809G"
| Type of Media | Gas / Liquid |
|---|---|
| Flow Measuring Principle | Variable Area (VA) |
| Flow Range | Water: 440 gpm / 100,000 l/h, Air: 750 scfm / 1200 m3n/hr |
| Accuracy Range | ±2% FS / Class 2.5 VDI / VDE, ±1% FS / Class 1.6 VDI / VDE, ±5% FS / Class 4 VDI / VDE, ±3% FS / Class 2.5 VDI / VDE |
| Repeatability | All options except ELF: 0.25% FS, ELF: 1% FS |
| Operating Temperature | -198°C - 420°C |
| Measure/Control | Measure Only (Meter) |
| Max Flow | 20000 slpm |
| Max Operating Pressure | 1379 bar |
| Max Temperature | 420 celsius |
| Ingress Protection | IP66, IP67, Nema 4x, IP65 |
| Hazardous Area Approved | Class 1 Div 2, Class 1 Div 1, Zone 2, Zone 1 |
| Accuracy (FS) | ±2% FS, ±1% FS, ±5% FS, ±3% FS |
| Connectivity | Analog (4–20 mA), Analog (0–20 mA), Analog (0–10 V), Analog (0–5 V) |
| Max Flow | 100000 l/hr |
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 | See data sheet | A - NPT-Female w/Viton O-Rings | 1 - Aluminum Housing | A - Indicator only | 0 - None |
| B - Flange RF Oversized | B - NPT-Female w/Teflon O-Rings Low Flow Valve on Inlet - Typical for Sizes 0, 1, 2 | 2 - 316SS Housing | B - Inductive Alarm, 1 Switch | A - Valve on Inlet - Viton Seals | ||
| C - Flange RF 2x Oversized | See data sheet | See data sheet | See data sheet | |||
| D - Threaded Female Std | ||||||
| E - Threaded Female 2500 lbs | ||||||
| F - Threaded Male | ||||||
| See data sheet |