MT3750 Metal Tube Flow Meter
Compact, Reliable Low-flow Measurement for Demanding Environments
The MT3750 Series is a compact metal tube variable area flow meter designed for reliable gas and liquid measurement in high-pressure, high-temperature and hazardous applications. Its rugged stainless steel construction, compact footprint and multiple connection options make it easy to integrate into demanding process environments.
With standard options for low and extra-low flow (ELF) measurement, the MT3750 supports a wider range of process requirements. Optional alarms, a 4–20 mA transmitter and flow control options provide added flexibility for applications ranging from process analyzers and chemical injection to purge flow and offshore installations.
Features & Benefits
- Reliable Low-Flow Measurement: Measures liquid flows up to 100 l/h (26 gph) and gas flows up to 3.1 m³n/hr (110 scfh) for dependable measurement in low-flow process applications.
- Rugged Metal Tube Construction: Stainless steel construction withstands high pressures, high temperatures and demanding process environments where glass tube flow meters may not be suitable.
- Compact, Flexible Installation: Small footprint and multiple threaded or flanged connection options simplify integration into new or existing systems.
- Extra-Low Flow Capability: Standard Size A ELF option extends the MT3750 flow range for reliable measurement of ultra-low gas and liquid flows.
- Clear Local Flow Indication: Large, easy-to-read indicator provides convenient at-a-glance flow monitoring.
- Optional Electronic Outputs & Alarms: Add a 4–20 mA transmitter, reed switch alarm or inductive alarms for remote flow monitoring and high/low-flow indication.
- Optional Flow Control: Available needle valve and flow controller configurations provide additional flexibility for applications requiring flow adjustment or control.
- Drop-in Replacement for Glass Tube Meter: The same lay length as the Sho-Rate™ Series 1350 helps simplify upgrades to a more rugged metal tube design.
Applications
- Process analyzers
- Chemical injection
- Purge gas and liquid metering
- Rotating equipment flow measurement
- Burner control
- Gas chromatography
- High-pressure offshore applications
| Type of Media | Liquid, Gas |
|---|---|
| Flow Measuring Principle | Variable Area (VA) |
| Flow Range | Water: 26 gph / 100 l/h, Air: 110 scfh / 3.1 m3n/hr |
| Accuracy Range | ±5% FS* / Class 4 VDI / VDE (*QuickShip), ±3% FS / Class 2.5 VDI / VDE |
| Repeatability | Less than 1% FS |
| Max Pressure | 4000 psi |
| Operating Temperature | -50°C - 204°C* |
| Ingress Protection | IP65, IP66, IP67, Nema 4x |
| Measure/Control | Measure Only (Meter) |
| Max Flow | 52 slpm |
| Max Flow | 51000 sccm |
| Max Flow | 100 l/hr |
| Max Operating Pressure | 276 bar |
| Max Temperature | 204 celsius |
| Hazardous Area Approved | Class 1 Div 1, Class 1 Div 2, Zone 2, Zone 1 |
| Accuracy (FS) | ±5% FS, ±3% FS |
| Connectivity | Analog (4–20 mA) |
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: 3750C - ABCDEF - 1 - A - A - A - 0
| Meter Series | Construction/Seals | Connection Size & Type | Valve Configuration | Electrical Output | Accy | Accy Group 2 |
| 3750C | A - Std Design; Viton® O-rings B - Std Design; Teflon® O-rings C - Std Design; Buna O-rings D - Std Design; Kalrez® O-rings E - Std Design; EPM O-rings F - Std Design; Teflon® in Meter and Kalrez® in Valve G - All Welded/High Pressure; No Elastomer - No Valve Cavity |
1- 1/4" NPT (F) - Integral 2 - 1/4" Tube Compression - With Adapter 3 - 6 mm Tube Compression - With Adapter |
A - No Valve (Standard Fitting w/Plug) B - Low Flow Valve on Inlet - Typical for Sizes 0, 1, 2 C - Medium Flow Valve on Inlet - Typical for Sizes 3 & 4 D - High Flow Valve on Inlet - Typical for Sizes 5 & 6 E - No Valve Cavity - All Welded/High Pressure Only V - Mounted to 316L SS 8902 Flow Controller with Viton® Diaphragm |
A - None B - Reed Switch Alarm, Meter Mounted E - Single Inductive Alarm w/M20 x 1.5 Electrical Connection F - Single Inductive Alarm w/ 1/2" NPT (F) Electrical Connection G - Double Inductive Alarm w/M20 x 1.5 Electrical Connection H - Double Inductive Alarm w/ 1/2" NPT (F) Electrical Connection J - Mat Transmitter w/M20 x 1.5 Electrical Connection K - Mat Transmitter w/ 1/2" NPT (F) Electrical Connection |
A - None | 0 - None |