Flow Meters
1020CKF1C91AA
Brooks GT1000 Glass-Tube Variable-Area Flowmeter
About this part
1020CKF1C91AA is a configured identifier from Brooks Instrument’s GT1000 industrial glass-tube variable-area flowmeter family. The 1020 model form denotes horizontal inlet and outlet orientation. The remaining legacy suffix must be matched against the unit nameplate and calibration record because available Brooks documentation does not directly decode this older suffix format
Configurations vary. Verify the exact unit before choosing a replacement.
Key Facts
Specifications
| Manufacturer | Brooks Instrument |
| Product family | GT1000 Series |
| Model form | 1020 |
| Connection orientation | Horizontal inlet and horizontal outlet |
| Measurement principle | Variable area, using a float in a tapered borosilicate-glass metering tube |
| Service media | Gas or liquid |
| Standard accuracy | ±2% of full scale; Class 2.5 per VDI/VDE |
| Optional accuracy | ±1% of full scale; Class 1.6 per VDI/VDE |
| Repeatability | ≤0.5% of full scale |
| Metering-tube material | Borosilicate glass |
| Ambient temperature range | 33 to 125 °F (1 to 52 °C) |
| Operating-fluid temperature range | 33 to 250 °F (1 to 121 °C) |
| Scale options | Single or dual detachable aluminum scale; direct-reading, millimeter, or percent-of-maximum-flow graduations |
| Nominal scale lengths | 127, 200, or 250 mm |
| End-fitting materials | Brass or 316/316L stainless steel, configuration-dependent |
| Process connections | Female NPT or Rc/BSP threaded connections; ANSI 150 lb raised-face flanges on applicable stainless-steel configurations |
| Maximum operating pressure | Configuration-dependent: 75 to 500 psig (5.2 to 34.5 bar) at fluid temperatures through 250 °F (121 °C) |
Model identification boundary
The exact identifier uses an older configured-suffix format that is not decoded by the available 2018 Brooks GT1000 model-code table.
Operating and service notes
Brooks safety and installation requirements for GT1000 flowmeters.
- Mount the flowmeter within 6 degrees of true vertical, with the process inlet at the bottom and outlet at the top.
- Open process valves slowly and avoid pressure or flow surges; glass-tube failure can cause injury or equipment damage.
- Do not operate beyond the pressure or temperature limits for the configured meter size and connection type.
- Depressurize the process line before service. Drain liquid meters when isolated between closed valves to prevent thermal-expansion damage.
- The O-ring construction permits in-line removal of the glass tube for cleaning and maintenance.
Replacement relationship
Brooks identifies the GT1600 Series as the replacement family for GT1000 meters. GT1600 units can be configured as drop-in retrofits for GT1000 installations, but the replacement must be selected from the original meter’s flow range, tube and float, process conditions, wetted materials, connection geometry, scale, accuracy, valve, and alarm requirements.
Documentation Downloads
Local PDF copiesPart Photos
5 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 $300.00 to $300.00. Based on 1 archived listing record; not a current offer, appraisal, or confirmed sale price.
View archived listing titles
- BROOKS 1020CKF1C91AA GAUGE