The new VeriCal in-situ calibration verification system introduced by Fluid
Components International (FCI) for the ST100 Series flare gas flow meter
eliminates the cost and effort involved in traditional calibration processes.
The ST100 flare gas flow meter with the VeriCal in-situ calibration
system is designed to meet the US Minerals Management Service (MMS) Rule, 30
CFR Part 250, Subpart K, Section 250, stipulating that all domestic US offshore
rigs processing more than an average of 2000 BOPD must install flare/vent gas
flow meters. These regulations are intended to protect the environment by monitoring
greenhouse gases (GHG).
The VeriCal in-situ calibration system verifies the accuracy of the ST100
flow meter’s flare gas calibration in minutes without removing the meter from
the pipe or process to meet MMS regulations. Traditional flow meter
calibrations typically require the oil/gas facility to periodically shut down
the line, pull their flow meters from the process, install a spare, return the
meter to the manufacturer or a calibration lab for testing, and finally pay to
ship them back for re-installation.
Designed with feature-rich and function-rich electronics, the ST100
Series air/gas flow meter sets a new industry benchmark in process and plant
air/gas flow measurement.
Key features include a unique graphical, multivariable, backlit LCD
display/readout to provide comprehensive information with continuous display of
all process measurements and alarm status as well as interrogate for service
diagnostics; ability to store up to five unique calibration groups to
accommodate broad flow ranges, and differing mixtures of the same gas and
multiple gases, and obtain up to 1000:1 turndown; and on-board data logger with
an easily accessible, removable micro-SD memory card capable of storing 40
The flow meters are available in a choice of two multivariable core
model families: While ST meters measure both mass flow and temperature, the
exclusive STP family adds a third parameter, pressure, making the ST100 the
world’s first triple-variable thermal flow meter. Both families include
single-point and dual-element models as configurations.
The ST100 meter can be calibrated to measure virtually any process gas,
including wet gas, mixed gases and dirty gases. The basic insertion style
air/gas meter features a thermal flow sensing element that measures flow from
0.07 NMPS to 305 NMPS with accuracy of ±0.75 percent of reading, ±0.5 percent
of full scale.
Designed for rugged industrial processes and plants, the ST100 flow meter
includes service up to 454¡C and is available with both integral and remote up
to 300-metre electronics versions. The ST100 meter is agency approved for
hazardous environments, including the entire instrument, the transmitter and
the rugged, NEMA 4X/IP67 rated enclosure. Instrument approvals in addition to
SIL-1 include ATEX, IECEx, FM and FMc. The ST100 also meets any requirement for
4-20 mA analogue, frequency/pulse, alarm relays or digital bus communications
such as HART, Fieldbus, Profibus or Modbus.