Brooks Instrument SLA7900 Metal-Sealed Mass Flow Controller
About this part
SLA7950S1UGG1D2E1 is a configured Brooks Instrument SLA7950S / SLA7900 Series metal-sealed thermal mass flow controller identifier. Brooks-authored SLA7900 documentation supplies the family-level technical context for SLA7950S analog-I/O configurations, while exact gas, flow range, pressure label, valve state, fittings, and calibration remain configured-unit properties that should be verified from the physical unit label. Stored Sonisys auction evidence for this exact code includes AR 10 SLM and N2O 25 SLM observations; additional surplus evidence shows NF3 10 SLM and HE 20 SLM / 45 PSIG observations
Unit-specific configuration
Observed configuration
Historical listing records identify this part as AR at 10 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.
Application classSemiconductor/high-purity gas delivery
CategoryFlow Control
Specifications
Identification
Part identifier
SLA7950S1UGG1D2E1
Device type
High-purity metal-sealed thermal mass flow controller
Series family
Brooks SLA7900 Series; Brooks-authored family documentation covers Models SLA7950 and SLA7960 mass flow controllers and meters
SLA7950S platform context
Brooks SLA7900 documentation shows SLA7950S examples with analog I/O, 9-pin or 15-pin D-connector options, and VCR or downport connection layouts
Configuration
Configured-unit rule
Gas, full-scale flow range, pressure label, process connections, valve behavior, and calibration options vary by configured unit and should be checked from the unit label
Applications
Application domain
Advanced high-purity and ultra-high-purity gas handling systems, including semiconductor process gas flow measurement and control
Flow
Family flow-range capability
Brooks-authored SLA7900 data-sheet context lists any range from 0-3 sccm to 0-50 slpm N2 equivalent for SLA7950/SLA7960 models
Observed stored auction configurations
AR 10 SLM (2) and N2O 25 SLM (1) appear in stored Sonisys auction-title evidence for this exact configured code
Additional observed configurations
NF3 10 SLM and HE 20 SLM / 45 PSIG appear in surplus and listing evidence; these are observed configurations, not official model-wide specifications
Performance
Family accuracy context
Brooks-authored SLA7900 data-sheet context lists +/-1.0% of rate including linearity from 20% to 100% full scale and +/-0.2% full scale below 20% full scale
Family repeatability and response context
Brooks-authored SLA7900 data-sheet context lists +/-0.20% of rate repeatability and less than 1 second settling time for step changes above 5% full scale
Family long-term drift context
Brooks-authored SLA7900 data-sheet context lists long-term sensor drift performance below 0.2% per year
Pressure
Family pressure context
Brooks-authored SLA7900 data-sheet context lists 1500 psig maximum operating pressure, with 150 psig and below recommended for best performance
Leak integrity
Family metal-seal context
Brooks-authored SLA7900 data-sheet context lists all-metal seals and inboard-to-outboard leak integrity less than 1 x 10^-10 atm scc/sec helium maximum
Brooks-authored SLA7900 data-sheet context identifies 316L VAR stainless steel, 316L stainless steel, high-alloy ferritic stainless steel, nickel seals, and 17-7PH stainless steel valve-seat material for documented family configurations
Family wetted-surface context
Brooks-authored SLA7900 data-sheet context describes wetted surfaces as electropolished to 5 Ra for documented family configurations
Connections
Process connection family
Brooks SLA7900 documentation shows VCR and downport seal connection configurations for SLA7950S family variants; exact fitting package should be verified from the unit label and body
Controls
Analog I/O family context
Brooks-authored SLA7900 documentation identifies SLA7950S as an analog-I/O model using 9-pin or 15-pin male D-connector configurations
Analog signal context
Brooks-authored SLA7900 documentation lists 0-5 V setpoint and flow signals with a separate valve-override signal for analog configurations
RS-485 option context
Brooks-authored SLA7900 documentation lists a 15-pin D-connector RS-485 option using Brooks S-Protocol based on HART for applicable configurations
Electrical
Analog power context
Brooks-authored SLA7900 documentation lists 13.5 to 27 VDC power for analog I/O versions, with 15 VDC nominal
Analog or RS-485 power requirement with valve
Brooks-authored SLA7900 data-sheet context lists 4.2 W typical and 4.6 W maximum for analog I/O or RS-485 family variants with valve
Environment
Family operating ambient context
Brooks-authored SLA7900 data-sheet context lists operating ambient temperature from 0 C to 65 C and non-operating ambient temperature from -25 C to 100 C
Cleanliness
Family particulate context
Brooks-authored SLA7900 data-sheet context lists zero particles per cubic foot greater than 0.1 microns under process conditions and less than 4 particles per cubic foot greater than 0.02 microns under process conditions
Functionality
Calibration storage
Brooks-authored SLA7900 family context describes storage and pre-programming of up to 10 gas calibrations or ranges on a single device