Page 3 - Proportion-Air - Fluid Power and Fluid Control Solutions for the Oil and Natural Gas Industry

METHODS OF PROTECTION

“Intrinsically Safe”, “Explosion Proof” & “Nonincindive” are methods of protection against damage or loss of life
resulting of ignition of a combustible atmosphere. Intrinsic Safety, as a method of protection, limits the energy available
in the hazardous (classified) area so, under normal operation or with a fault(s) present, an ignition and resulting
explosion and fire cannot occur. Explosion Proof, as a method of protection, completely contains any explosion and fire
and quenches the resulting high temperature gasses to prevent ignition to the surrounding atmosphere. Nonincindive is
a method of protection in which any spark or thermal effect, produced under normal operating conditions, is incapable
of causing ignition of a specified mixture of flammable or combustible material in air.

The ISQB is rated Intrinsically Safe for Class I, II, & III, Division 1, Groups C, D, E, F, & G*
The ISQB requires the use of Intrinsically Safe Barriers

The ISF1 is rated Nonincindive for use in Class I, Division 2, Groups C & D, with intrinsically safe
process connections for Class I, Division 1, Groups A, B, C, & D; Suitable for Class II, Division 2,
Groups F & G with intrinsically safe process connections for Class III indoor/outdoor (Type 4x)
hazardous classified locations. Intrinsically safe process connections refers to process connections that
under any condition of installation or operation will not change the nature of the hazardous (classified)
area from a Division 2 to a Division 1 location*. The ISF1 does not require the use of Intrinsically Safe
Barriers.

*Further information that is pertinent to your locale is available from any of the approving bodies such as Factory Mutual, Underwriters
Laboratories, CSA and a number of European certifying agencies.
*These ratings do not account for mechanisms of ignition from external sources.
*These ratings do not mean the certified units will continue to function after a combustion event.

PIGGING is the process of inspecting, cleaning or performing various maintenance operations on
pipelines. The ‘Pig’ is launched from the pig launcher into the pipeline
and controlled by regulating the flow of air, oil, natural gas or simply
the product that is transferred in the pipeline. This process has been
used for many years and with great success in the oil and gas
industries.

Proportion-Air’s Flow Control Packages offer ‘real-time’ feedback
which equates to instant responses to changes in command or system
fluctuations. These units are perfect for air-driven pigging systems.

Using differential pressure technology and various configurations,
Proportion-Air’s flow control packages will control flow ranges as low
as 2 to 20 SCFH (1 to 10 lit/min) and as high as 25 to 250 SCFM (708 FQB3 & F-Series Flow Monitor
to 7080 lit/min). These packages produce excellent repeatability of +/- 0.25% *Not rated for hazardous locations

OIL & GAS * PROPORTION-AIR.COM * LET’S TALK: 317.335.2602 | 877.331.1738 3