Flow Control
SLA5850S
Brooks Instrument SLA5800 Digital Thermal Mass Flow Controller
About this part
SLA5850S is a Brooks Instrument SLA5800 Series elastomer-sealed digital thermal mass flow controller model. Brooks documentation identifies the SLA5850S as an analog I/O mass flow controller with RS-485 and elastomer downport connections. Sonisys auction history includes exact configured-code observations such as SLA5850S1BAB6BA1A with N2 wording and SLA5850S1BDD6B1A1 with mixture 2 SLPM wording, but gas, range, seals, valve, connection, and communication details remain configured-unit properties
Configurations vary. Verify the exact unit before choosing a replacement.
Key Facts
ManufacturerBrooks Instrument
Part numberSLA5850S
Product familySLA5800 Series
Device typeMass Flow Controller
Configuration statusConfiguration varies
Application classSemiconductor/high-purity gas delivery
CategoryFlow Control
Specifications
Identification
| Device type | Elastomer-sealed digital thermal mass flow controller for gases |
| Series family | SLA5800 Series |
| Documented model identity | Model SLA5850S analog I/O MFC with RS-485 and elastomer downport connections |
| Related documented controller models | SLA5850, SLA5851, and SLA5853 |
Configuration
| Configured-unit rule | Gas, full-scale range, process connections, seal material, valve state, electrical interface, and digital communications vary by configured code |
Applications
| Application domain | Advanced gas handling, production, laboratory, analytical, chemical and petrochemical research, fuel cell, life science, and process gas control |
Flow
| SLA5850 range capability | 0-3 ccm to 0-30 lpm N2 equivalent; up to 0-50 lpm with coplanar valve option |
| Overall SLA5800 family range | Less than 3 ccm to 2500 lpm N2 equivalent across the SLA5800 family |
Observed Listing Context
| Observed N2 configured code | Stored and listing evidence includes SLA5850S1BAB6BA1A with N2 wording |
| Observed mixture configured code | Stored and listing evidence includes SLA5850S1BDD6B1A1 Rev A with mixture 2 SLPM wording |
Performance
| Accuracy | +/-1.0% of rate from 20-100% full scale and +/-0.2% full scale below 20% full scale up to 1100 lpm |
| Repeatability | +/-0.20% of rate |
| Control range | 50:1 turndown; 100:1 turndown with coplanar valve option for 1-50 lpm N2 equivalent full-scale ranges |
| Settling time | Less than 1 second to within +/-2% full scale for a 0-100% command step up to 100 lpm |
| Long-term drift | Less than 0.2% per year |
Calibration
| Selectable calibration curves | Storage of up to 10 selectable calibration curves |
Controls
| Analog interface | 15-pin D-connector with 0(1)-5 V or 0(4)-20 mA setpoint and flow signals, depending on configuration |
| SLA5850S digital context | SLA5850S is documented as analog I/O with RS-485; other SLA5800 variants support DeviceNet, FOUNDATION Fieldbus, Profibus, EtherNet/IP, and EtherCAT options |
Electrical
| Power supply context | Analog option 13.5-27 Vdc; digital options vary by protocol |
Ratings
| Pressure rating context | SLA5850/SLA5860 model family is listed at 100 bar / 1500 psi; optional higher-pressure versions exist for selected body styles |
| Operating ambient temperature | 0 to 65 C |
| Leak integrity | 1 x 10^-9 atm scc/sec helium maximum, inboard to outboard |
Materials
| Wetted materials | Stainless steel wetted parts with Viton fluoroelastomers standard; optional Buna-N, Kalrez, Teflon/Kalrez, and EPDM seal materials |
Connections
| Connection context | SLA5850S uses elastomer downport connections; specific process interface and seal package depend on the configured code |
Documents
| Hosted official documentation | Sonisys hosts local copies of Brooks SLA5800 data sheet, installation manual, quick start guide, and MultiFlo configurator guide |
Documentation Downloads
Local PDF copiesPart Photos
3 imagesHistorical archive images for identification, labels, connectors, and condition reference, not current inventory.
Historical Listings & Prices
Historical listing data, not a current offerArchive records8Tracked historical listing records
Historical median price$717.60Based on archived listing records
Recorded price range$250.00 - $2,257.48Low to high recorded listing price
Local documents4PDF copies available from Sonisys
Recorded price context
The typical recorded price range is $355.00 to $2,054.81. Based on 8 archived listing records; not a current offer, appraisal, or confirmed sale price.
View archived listing titles
- LowTariff✓ BROOKS MFC SLA5850S
- LowTariff BROOKS MFC SLA5850S
- SLA5850S New Flowmeter SLA5850S Brooks Instrument SLA5850S
- SLA5850S New Flowmeter SLA5850S Brooks Instrument SLA5850S Fast transportation
- BROOKS SLA5850S DELTA II MASS FLOW N2 SLA5850S1BAB6BA1A N2
- BROOKS SLA5850S DELTA II MASS FLOW MIXTURE 2 SLPM SLA5850S1BDD6B1A1 Rev A
Archived listings
Other Part Numbers & Aliases
SLA5850SBrooks SLA5850SBrooks Instrument SLA5850SBrooks SLA5850S MFCBrooks SLA5850S Mass Flow ControllerSLA5850S Mass Flow ControllerSLA5850S FlowmeterSLA5850S1BAB6BA1ABrooks SLA5850S1BAB6BA1ASLA5850S1BDD6B1A1Brooks SLA5850S1BDD6B1A1