Pressure instrument

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Address: Building 10, Zhonglian Industrial Park, Zhongbei Town, Xiqing District, Tianjin

Rossmont Flexim FLUXUS G831 ST-LT Non-Invasive Steam Flow Measurement Device

The Flexim FLUXUS G831 ST-LT can measure steam flow from the outside of pipelines using non-invasive technology, even in hazardous areas—certified for ATEX/IECEx Zone 1 and FM Class I, Division 1. It remains highly sensitive even at low flow rates, and its functionality is unaffected by flow direction. Thanks to its wide flow range—from 0.01 to 60 m/s (0.03 to 197 ft/s)—there’s no need to reduce the pipe diameter to meet the minimum flow velocity requirements of in-line instruments. Additionally, the non-invasive measurement method ensures zero pressure loss, while the sensor can be installed with thermal insulation to prevent heat dissipation into the environment. For the first time ever, the FLUXUS G831 ST-LT allows users to accurately measure steam consumption across an exceptionally broad range—covering everything from extremely low to ultra-high flow rates—with just one single-sized flowmeter.

Classification:

Rosemont

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24-hour service hotline：+86-22-59958977

Bidding authorization：+86 13821081088

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Product Description

- Commodity name: Rossmont Flexim FLUXUS G831 ST-LT Non-Invasive Steam Flow Measurement Device
- Commodity ID: Flexim FLUXUS G831 ST-LT
The Flexim FLUXUS G831 ST-LT can measure steam flow from the outside of pipelines using non-invasive technology, even in hazardous areas—certified for ATEX/IECEx Zone 1 and FM Class I, Division 1. It remains highly sensitive even at low flow rates, and its functionality is unaffected by flow direction. Thanks to its wide flow range—from 0.01 to 60 m/s (0.03 to 197 ft/s)—there’s no need to reduce the pipe diameter to meet the minimum flow velocity requirements of in-line instruments. Additionally, the non-invasive measurement method ensures zero pressure loss, while the sensor can be installed with thermal insulation to prevent heat dissipation into the environment. For the first time ever, the FLUXUS G831 ST-LT allows users to accurately measure steam consumption across an exceptionally broad range—covering everything from extremely low to ultra-high flow rates—with just one single-sized flowmeter.
Specifications
- Fluid type
Saturated and Superheated Steam
- Accuracy
Measurement uncertainty (volumetric flow rate): ±0.3% of the reading ±0.005 m/s
Measurement uncertainty at the measurement point (volumetric flow rate): ±1–2% of the reading ±0.005 m/s
- Repetitiveness
0.15% reading ±0.005 m/s (±0.02 ft/s)
- Traffic Channel
Maximum of 2
- Scope
Flow velocity range: 0.01 to 60 m/s, depending on the pipe diameter
- Certificate/Certification
FM Category I / Category 1
FM Class I / Category 2
ATEX/IECEx Zone 1
INMETRO
NEPSI
WEIGHT
KOSHA
- Power supply
100–230 VAC
20-32VDC
- Pipe dimensions
23mm to 1000mm (0.9 to 39.4 inches)
- Pressure range
3 to 10 barg (44 to 145 psig)
- Temperature range (medium)
+135 to +180°C (+275 to +356°F)
- Output
4-20mA Active/Passive (Optional Ex-ia)
4-20mA HART Active/Passive (Optional Ex-ia)
Pulse/Frequency/Binary
- Input
Temperature (optional Ex-ia)
4-20mA (optional Ex-ia active)
- Communication Protocol
Modbus RTU
BACnet MSTP
Profibus PA (optional Ex-ia)
Foundation Fieldbus (Optional Ex-ia)

Features
- It also features a high dynamic flow range at low flow rates.
- No need to reduce the pipe diameter—zero pressure loss.
- Integrate quality flow measurement functionality.
- Advanced Meter Verification.

None

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Submission

Tianjin Zhongdian Celestial Science and Technology Co.,Ltd

津ICP备19004242号-1

Business license

Rossmont Flexim FLUXUS G831 ST-LT Non-Invasive Steam Flow Measurement Device

Specifications

Features

Tianjin Zhongdian Celestial Science and Technology Co.,Ltd