Brooks Instrument Ar-Mite MT3750C Variable Area Flowmeter
About this part
3750CA1A11BEAAAAA0 is a configured Brooks Instrument Ar-Mite MT3750C Series low-flow armored metal tube variable area flowmeter. Official Brooks MT3750C documentation identifies the 3750C base model as a 55 mm armored purge flowmeter and provides model-code options for materials, meter size, seals, connection, valve, accuracy/scale fluid, electrical output, certifications, inspections, and accessories. The full configured identifier is consistent with a 316L stainless steel, size 1, Viton-seal, 1/4 inch NPT female, horizontal, low-flow-valve-on-inlet, direct-reading-gas, indicator-only configuration with no relay/power-supply, no approval, no inspection, no accessory, and no accessory group 2 option; physical unit label and application calibration remain authoritative
Configurations vary. Verify the exact unit before choosing a replacement.
Application classIndustrial automation and process equipment
CategoryFlow Control
Specifications
Identification
Device type
Low-flow armored metal tube variable area flowmeter
Series family
Brooks Ar-Mite MT3750C Series
Configured part identifier
3750CA1A11BEAAAAA0
Base model code
3750C, identified by Brooks model-code documentation as a 55 mm armored purge flowmeter
Flow
Measuring principle
Variable area metal tube flow measurement with magnetically coupled indication
Series capacity context
Brooks MT3750C family documentation lists water-equivalent ranges from 0.025-0.25 gph through 2.8-26 gph and air-equivalent ranges from 2.4-15 ln/h through 12-110 scfh depending on meter size and configuration
Configuration
Model-code interpretation
The configured code parses as 3750C / A / 1 / A / 1 / 1 / B / E / A / A / A / A / A / 0 using the Brooks MT3750C model-code table
Material code
Code A corresponds to 316L stainless steel in the Brooks MT3750C material specification table
Meter size and float context
Code 1 corresponds to meter size 1; for a 316L tube, Brooks lists a 316L stainless steel float
Construction and seals
Code A corresponds to standard design with Viton O-rings
Connections
Configured connection
Code 1 in the connection position corresponds to 1/4 inch NPT female integral connection; orientation code 1 corresponds to horizontal inlet and outlet for threaded connections
Controls
Valve configuration
Code B corresponds to low-flow valve on inlet, typical for sizes 0, 1, and 2
Scale and fluid
Accuracy/inscription/fluid code
Code E corresponds to VDI class 4 / 5% full-scale direct-reading gas scale context
Electrical
Electrical output and power option
Electrical output code A and alarm relay/transmitter power code A correspond to no electrical output and no relay/power-supply option
Approvals and accessories
Configured options
Certification/approval, material inspection, accessory, and accessory group 2 positions are A/A/A/0, corresponding to none in the Brooks MT3750C model-code table
Performance
Family accuracy and repeatability
Brooks MT3750C documentation lists accuracy classes of 5%, 3%, VDI/VDE class 4, or class 2.5 depending on configured meter, with 1% full-scale repeatability
Materials
Family material options
Brooks MT3750C documentation lists 316L stainless steel or Monel K-500 metering tube and end fitting options, 316L stainless steel or titanium Grade II float options, and Viton, PTFE Teflon, Buna-N, Kalrez 4079, and ethylene propylene O-ring options
Ratings
Series pressure and temperature context
Brooks MT3750C documentation lists maximum fluid pressure of 1500 psig / 100 bar for standard meters and maximum fluid temperature up to 204 C / 400 F subject to ambient temperature and elastomer limits
Installation
Startup and maintenance boundary
Brooks MT3750C installation guidance warns to open process valves slowly, check for leaks, use qualified personnel, and not operate the instrument beyond manual specifications
Observed variants
Stored listing context
Stored auction and surplus records identify this exact configured part as a Brooks Ar-Mite armored flowmeter and include 1500 psig at 400 F wording; this is observed listing context, not a separate model-wide specification
Applications
Application domain
Low-flow gas and liquid indication in high-pressure, high-temperature, hazardous, tight-space, and difficult-fluid process applications, depending on configured meter and process compatibility
