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Flow Control
5850E/B1A1B40
Brooks Instrument 5850E Series Mass Flow Controller
About this part 5850E/B1A1B40 is a configured Brooks Instrument 5850E Series thermal gas mass flow controller identifier. Official Brooks 5800E/5850E documentation verifies the 5850E as an elastomer-sealed analog mass flow controller platform; gas, full-scale range, fittings, connector, valve state, and seals remain configured-unit details. Stored listing evidence for this exact identifier observes an N2 20 SLM configuration, which should be treated as archive evidence rather than a universal model-wide specification
Unit-specific configuration
Observed configuration
Historical listing records identify this part as N2 at 20 SLM. 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.
No archived photo available
Key Facts
Specifications
Documents
Images
Listing history
Aliases
Related
Key Facts
Manufacturer Brooks Instrument
Part number 5850E/B1A1B40
Product family 5850E
Device type Mass Flow Controller
Observed gas N2
Observed full-scale range 20 SLM
Configuration status Verify from unit label
Application class Semiconductor/high-purity gas delivery
Category Flow Control
Specifications
Identification
Part identifier 5850E/B1A1B40 Device type Thermal gas mass flow controller Series family Brooks 5800E / 5850E elastomer-sealed analog gas mass flow controller series
Configuration
Configured-unit rule Gas, full-scale range, process fitting, connector, valve state, and seal package vary by configured model code and physical unit label
Observed configuration
Stored auction gas and range N2, 0-20 SLM observed in stored exact-part listing evidence
Flow
5850E standard range context Official 5850E manual lists standard ranges from 3 sccm to 30 slpm nitrogen equivalent
Performance
5850E accuracy context +/-1% full scale including linearity at calibration conditions; +/-1.5% full scale for flow ranges greater than 20 slpm 5850E repeatability context 0.25% of rate 5850E response time context Less than 3 seconds to within 2% of full-scale final value for a 0 to 100% command step 5850E control range context 50:1
Pressure
5850E maximum working pressure context 1500 psi maximum; required differential pressure is 5 to 50 psi depending on gas and range
Environmental
5850E temperature context Operating ambient temperature range is 40 F to 150 F (5 C to 65 C)
Electrical
5850E command input 0-5 Vdc command input with 200 k ohm input resistance 5850E flow output 0-5 Vdc output into 2000 ohms or greater 5850E connector options Card-edge connector or 15-pin D-connector (DA-15P), depending on configuration
Materials
5850E leak integrity context Official 5850E manual lists 1 x 10^-9 atm cc/sec helium leak integrity
Controls
Valve and control electronics 5850E controllers combine a flow sensor, control valve, and integral electronic control system for stable gas flow control
Applications
Application domain Semiconductor, laboratory, analytical, chemical, petrochemical, fuel-cell, and life-science gas-flow applications
Documentation Downloads
Local PDF copies
Part Photos
0 images
Historical archive images for identification, labels, connectors, and condition reference, not current inventory.
Historical Listings & Prices
Historical listing data, not a current offer
Archive records 2 Tracked historical listing records
Historical median price $929.18 Based on archived listing records
Recorded price range $859.36 - $999.00 Low to high recorded listing price
Local documents 2 PDF copies available from Sonisys
Recorded price context
The typical recorded price range is $873.32 to $985.04. Based on 2 archived listing records; not a current offer, appraisal, or confirmed sale price.
View archived listing titles
BROOKS INSTRUMENT 5850E/B1A1B40, Mass Flow Controller, N2; 0-20 slpm
BROOKS INSTRUMENT 5850E/B1A1B40 THERMAL MASS FLOW 5800E SERIES
Other Part Numbers & Aliases
5850E/B1A1B40 Brooks 5850E/B1A1B40 Brooks Instrument 5850E/B1A1B40
