Inline Flowmeter Measures Chlorine Without the Need for Straight-Pipe Runs

Oct. 6, 2017
Company technicians perform on-site calibration adjustments prior to installation

The Model ST100L air/gas inline thermal mass flowmeter with Vortab flow conditioner from Fluid Components Intl. (FCI) provides accurate flow measurement without the long straight-pipe runs required by other meters.

The successful measurement of chlorine presents a challenge for flowmeter suppliers. Due to safety hazard regulations, flowmeter manufacturers cannot flow chlorine gas at their facilities for calibration. To address this problem, FCI field technicians perform on-site calibration adjustments to match the site-specific installation.

The Model ST100L is an inline, spool piece meter for chlorine measurement, which is available with an optional Vortab flow conditioner. This model is designed for 1-, 1.5- or 2-in. lines (DN25, DN40 or DN50). The conditioner eliminates flow profile disturbances to produce a repeatable flow profile for accurate flow measurement.

The ST100L flowmeter is typically installed in a water disinfection system’s chlorine gas inlet line to the chlorinator panel. For operation in corrosive chlorine gas environments, the meter’s wetted material—including its sensor element, inline flow body, flow conditioner and process connections—are all fabricated of Hastelloy C-276 to ensure their corrosion protection.

ST100L flowmeter users have multiple communication options: 4-20 mA analog, frequency/pulse or certified digital bus communications such as HART, Foundation Fieldbus, Profibus PA or Modbus RS485. Should a water plant’s communication need a change, the ST100L meter can be revised with field or factory replacement of the output circuit board.

[Visit FCI's WWD Storefront]

This meter utilizes constant-power thermal mass flow sensing technology that measures flow with 100:1 turndown in ranges from 0.006 to 1,850 scfm (0.01 to 3,140 ncmh). The transmitter/electronics can be mounted with the flow body or may be remotely mounted to 1,000 ft (305 m) away. The transmitter enclosure is NEMA4X/IP67 rated.

Sponsored Recommendations

Blower Package Integration

March 20, 2024
See how an integrated blower package can save you time, money, and energy, in a wastewater treatment system. With package integration, you have a completely integrated blower ...

Strut Comparison Chart

March 12, 2024
Conduit support systems are an integral part of construction infrastructure. Compare steel, aluminum and fiberglass strut support systems.

Energy Efficient System Design for WWTPs

Feb. 7, 2024
System splitting with adaptive control reduces electrical, maintenance, and initial investment costs.

Blower Isentropic Efficiency Explained

Feb. 7, 2024
Learn more about isentropic efficiency and specific performance as they relate to blowers.