Brooks Instrument Sho-Rate 1250 Variable Area Flowmeter
About this part
1250AR6071MRSVV is a configured Brooks Instrument Sho-Rate 1250 glass tube variable area flowmeter identifier. Brooks official 1250/1255 documentation places the 1250 family in low-flow glass tube variable area flowmeters and lists R6071 in the Model 1250 millimeter-reference capacity table with 6,000 CCM air and 130 CCM water reference capacities. Stored Sonisys auction records and distributor catalog evidence identify this exact configured part number with 0 to 6,000 CCM air context, but final suitability still depends on the physical unit label, tube/float assembly, scale, end-block material, valve configuration, seals, process fluid, pressure, and temperature
Unit-specific configuration
Observed configuration
Historical listing records identify this part as AIR at 0-6,000 CCM. Exact gas, range, fittings, valve configuration, and communication interface must be verified from the physical unit label.
Configurations vary. Verify the exact unit before choosing a replacement.
Application classLife sciences and laboratory automation
CategoryFlow Control
Specifications
Identification
Device type
Sho-Rate 1250 glass tube variable area flowmeter / rotameter
Series family
Brooks Sho-Rate 1250/1255 low-flow glass tube variable area flowmeters
Configured part number
1250AR6071MRSVV
Base model context
Brooks model-code documentation identifies 1250A as the 65 mm tube flowmeter base model and 1255A as the 150 mm tube flowmeter base model
Flow
Measuring principle
Variable area flowmeter with tapered borosilicate glass metering tube and metering float
Observed stored auction range
Stored auction titles describe this configured part as Flow Range at CCM of Air 0-6000
R6071 reference capacity
Brooks 1250/1255 documentation lists R6071 with 6,000 CCM air and 130 CCM water in the Model 1250 millimeter reference scale capacity table
Configuration
Code interpretation boundary
The configured code is consistent with 1250A base model, R6071 tube/table context, millimeter scale context, stainless 1/8 inch FNPT end-block context, and Viton seal context; verify valve arrangement and installed hardware from the physical label
Configured-unit rule
Tube number, float material, reference scale, flow units, end-block material, connection, valve, O-ring material, and process-fluid assumptions must be verified from the specific unit and documentation
Reference conditions
Brooks 1250/1255 data sheet states reference conditions of 70 F (21.1 C) and 14.7 psia (1 bar absolute) for listed gas accuracy context
Performance
1250 family accuracy
Brooks 1250/1255 data sheet lists 1250 accuracy as 5% full scale at reference conditions for listed gases
Repeatability
Brooks 1250/1255 data sheet lists repeatability as 0.25% full scale
Pressure and temperature
Series-level pressure/temperature
Brooks 1250/1255 data sheet lists 200 psig from 33 F to 250 F / 13.8 bar from 1 C to 121 C; verify the configured unit and application before using this limit
Materials
Series-level materials
Brooks 1250/1255 data sheet lists borosilicate glass, aluminum, 316 stainless steel, clear polycarbonate, and Teflon in materials of construction
Float materials
Brooks 1250/1255 documentation lists glass, sapphire, stainless steel, Carboloy, and tantalum float material options
Seal options
Brooks 1250/1255 data sheet lists Buna and Viton packing/O-ring options
Connections
Connection options
Brooks 1250/1255 data sheet lists 1/8 NPT with locknuts for aluminum or stainless steel and 1/4 NPT with locknuts for stainless steel only
Valve
Valve options
Brooks 1250/1255 data sheet lists cartridge valve options with stainless steel or brass valve materials
Maintenance
Tube assembly service
Brooks documentation describes quick removal or installation of tube and float while the meter remains in process piping, and the data sheet describes EZ-CHANGE tube assembly interchangeability
Applications
Application domain
Low-flow gas and liquid indication in laboratory, industrial, and OEM applications; exact gas/liquid use is configuration and scale dependent
