Vogtlin SmartTrak 100 Series, Manual

Page: 93 / 114

Vögtlin Instruments Instruction Manual SmartTrak
®
100 Series
91
Appendix E: Safety Guide for the 100HP
This Safety Guide is applicable for SmartTrak
®
100HP Ultra-High Pressure Mass Flow Meters
and Controllers.
Ultra-High Pressure Safety
Operating equipment under very high pressures does have safety risks of which you should be aware. This
guide is intended to educate the end-user in general terms of the risks of high pressure applications and is not
a complete registry of all high pressure do’s and don’ts. It is recommended that end-users educate
themselves on the specifics of their application and read any information their employer provides on the
subject.
Please read this Safety Guide in its entirety, the Quick Install Guide , and refer to the SmartTrak 100 Series
Instruction Manual, Chapter 2 for complete installation and operation instructions.
Ultra-High Pressure Specifications
The 100HP mass flow controller or meter can be used for a variety of flow rates, pressure drops, inlet
pressures, and gas types. However, each unit must be tuned specifically for each of these different
applications. The 100HP is rated to 5000 psig (345 barg) operating pressure, 7500 psig (517.1 barg) burst
pressure (
unless otherwise listed on the enclosure data label). You must know the capacity of each specific
model, as it will vary for specific gases and applications.
Specified leak rate maximum: As little as 4 mln/min at 5000 psid (345 bard) with a maximum of 5% of full
scale flow
. Vögtlin recommends the use of a positive shut-off valve in series with the 100HP. Make sure the
Cv of the shut-off valve is sufficiently large so as to not cause a choked flow condition at rates less than the
full scale of the 100HP.
Gas Cylinder Pressure Specifications
No mass flow meter or controller is universally functional for every application and this is particularly true
when dealing with pressures above 1500 psig (103 barg). The 100HP is designed to be used at or below
5000 psig (345 barg).
Thus, the 100HP is fully capable of controlling GSA standard, lower-pressure gas cylinders. However, some
gas cylinders can reach pressures exceeding 6000 psig (413.7 barg) and therefore are not incompatible with
the 100HP. While the 100HP is designed for use with most gas cylinders, never use the 100HP to control
pressures exceeding 5000 psig (354 barg).
It’s important to note that gas properties are pressure-dependent. All pressure ratings are based on
compressed nitrogen,
and many gases cannot be used with the 100HP at 5000 psig (345 barg). Oxygen is a
good example of this. Please consult the data label of your meter or controller for the most specific ratings,
or
consult the factory.
Warning!
The working pressure is stated on the flow meter and controller label. Check label and
process pressure before installing in the line. If the pressure values listed donot match
that of your application, the instrument should
not be used. Consult the factory for
the next steps.