Flow Control
GF120X-102039
Brooks Instrument Metal-Sealed Thermal Mass Flow Controller
About this part
Brooks Instrument GF120X-102039 is a configured GF120-series metal-sealed thermal mass flow controller identifier. Brooks ordering documentation defines GF120 as the high-performance, non-PTI branch and the following X as configurability disabled, requiring a fixed specific gas and range. The shortened identifier does not disclose the special application, gas, full-scale range, valve, fitting, connector, protocol, or calibration conditions; those details require the full product description code, side label, or Brooks configuration record
Configurations vary. Verify the exact unit before choosing a replacement.
No archived photo available
Key Facts
Specifications
| Manufacturer | Brooks Instrument |
| Part number | GF120X-102039 |
| Product family | GF120 model branch within the Brooks GF100 Series |
| Device type | Metal-sealed thermal mass flow controller for high-purity gas service |
| GF120 designation | High-performance, non-pressure-transient-insensitive model branch |
| Configurability code | X — not MultiFlo capable; a specific gas and range are required |
| Documented GF120 range context | The current standard-flow GF120 model table spans 3 sccm through 55 slpm N2-equivalent; SDS and high-temperature branches have different limits, and GF120X-102039 does not identify its exact branch or full-scale range |
| Published GF120 accuracy context | ±1% of set point above 35-100% full scale and ±0.35% full scale over 2-35%, based on the applicable factory N2 calibration context; the configured gas and range remain unit-specific |
| Published GF120 repeatability context | ±0.15% of set point from 5-100% and ±0.015% full scale from 2-5% for applicable current configurations |
| Normally closed valve settling-time context | 700 ms for the documented standard GF120 model; the shortened part number does not establish the installed valve or specialty application |
| Flow-path construction | GF100 Series all-metal, corrosion-resistant high-purity flow path using SEMI F20 HP/UHP-compliant wetted materials; individual components remain configuration dependent |
| GF120 surface-finish context | 5 µin Ra in the current GF120 model table |
| Documented family interfaces | Analog/RS-485, DeviceNet, and EtherCAT are configuration-dependent family interfaces; GF120X-102039 does not establish the installed connector or protocol |
What Does GF120X-102039 Mean?
GF120X-102039 is a shortened configured-part identifier rather than a complete Brooks product description code.
| Segment | Field | Interpretation |
|---|---|---|
| GF120 | Performance model | High-performance, non-PTI GF120 branch of the GF100 Series. |
| X | Configurability | Configurability disabled; not MultiFlo capable, with a specific gas and range required. |
| 102039 | Short part-number suffix | Not decoded by the published Brooks product-description-code table. It does not establish gas, range, specialty application, valve, fitting, connector, or calibration. |
Configuration Required for Service or Replacement
Service and replacement selection must use the unit side label, complete Brooks product description code, or an exact manufacturer configuration record.
Documentation Downloads
Local PDF copiesPart Photos
0 imagesHistorical archive images for identification, labels, connectors, and condition reference, not current inventory.
Historical Listings & Prices
Historical listing data, not a current offerThe typical recorded price range is $1,811.24 to $1,811.24. Based on 1 archived listing record; not a current offer, appraisal, or confirmed sale price.
View archived listing titles
- Brooks Instrument GF120X-102039 Mass Flow Controller 0190-45907 Lot of 2 New