Brooks Instrument 4850 Series Mass Flow Controller
About this part
4850ABB2G1B1JYC00A is a configured Brooks Instrument 4850 Series elastomer-sealed thermal mass flow controller. The official 4800 Series model-code table identifies this build as an RS-232 plus analog controller with 0-5 Vdc input/output, 24 Vdc power, 1/4-inch NPT female connections with filters, a 316 stainless-steel body, Viton seals and seat, a normally closed valve, and standard-location classification. The code also specifies a 0.031-inch valve orifice, restrictor code Y, single-gas calibration at the documented accuracy tier, no accessory or certificate option, and a standard Brooks label. Gas and calibrated full-scale flow are not encoded in this part number and should be confirmed from the unit label or calibration record
Configurations vary. Verify the exact unit before choosing a replacement.
Application classIndustrial automation and process equipment
CategoryFlow Control
Specifications
Identification
Device type
Elastomer-sealed thermal mass flow controller
Series and configured part number
Brooks 4800 Series model 4850; configured code 4850ABB2G1B1JYC00A
Controls
Communications and analog I/O
RS-232 plus analog; 0-5 Vdc input and 0-5 Vdc output
Electrical
Power supply
24 Vdc
Connections
Mechanical connections
1/4-inch NPT female with filter
Materials
Body, seals, and valve seat
316 stainless-steel body with Viton O-ring seals and Viton valve seat
Valve
Valve configuration
Normally closed valve with 0.031-inch (0.8 mm) orifice
Flow
Restrictor
Restrictor code Y; official model-code table associates this code with a nitrogen-equivalent restrictor range, while the exact gas and calibrated full-scale flow remain unit-specific
Calibration
Calibration option
Single-gas calibration, documented as +/-1.0% of full scale with no traceability option; exact gas and calibration range require the unit calibration record
Environment
Area classification
Standard location (safe area)
Configuration
Accessory, certificate, and label options
No accessory; no certificate option; standard Brooks label
