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- Reduced inventory costs.
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Fast response.
- Capable of ultra low flow (as low as 0.5SCCM
full scale).
- Wide variety of flow ranges. Offered in any
range from 0.5SCCM through 1500SLPM full scale.
- Low power consumption
-
Internal compensation
- Large operational flow range via 100:1 turndown
ratio
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No warm up time. Alicat
units are fully functional the moment they are activated.
- Measurement of multiple parameters: Mass flow,
volumetric flow, temperature and pressure. All parameters
displayed from a single device for easy monitoring of process
gasses or liquids.
- All Alicat mass flow controllers can be changed
to pressure controllers or volumetric controllers via digital
interface or via the display. The user can monitor mass flow while
controlling pressure or vice versa.
- Inherent linearity of Alicat mass flow and
volumetric flow instruments result in a more accurate and more
predicable device due to the device's tendency to naturally follow
the pre-defined calibration curve.
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Standard Features
of Alicat Mass Flow Meters and Mass Flow Controllers
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?Gas Select |
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Alicat mass flow, volumetric flow, and
pressure products allow the user to choose any of 14 different
gas calibrations (Air, Argon, Methane, Carbon Monoxide, Carbon
Dioxide, Ethane, Hydrogen, Helium, Nitrogen, Nitrous Oxide,
Neon, Oxygen, Propane, Butane) from the gas select menu on the
display or via RS-232 communication. This means that a single
Alicat device can take the place of almost any unit in the
field. Inventory costs are greatly reduced as it is no
longer necessary to purchase different mass flow meters for each
gas. |
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| ?Speed of
response & control |
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Alicat mass flow and pressure controllers
read in 10 milliseconds and control in 100ms |
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| ?Dynamic
digital display w/ Push Button Interface |
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Alicat mass flow, volumetric flow and
pressure control instruments come standard with a graphics
display that gives the operator a multitude of information and
precise field control over the device via a simple push-button
interface. |
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| ?Programmable
Geometric Running Average |
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Alicat mass flow meters have special built in
software to allow the user to slow down an inherently fast
response time. This allows the user to read mass flow rates that
might be rapidly fluctuating by taking more samples and
averaging them before updating the display and analog output. |
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?Field Adjustable PID Loop Tuning |
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All Alicat mass flow, volumteric flow and
pressure controllers have a field adjustable PID loop which can
be field tuned via the push button interface on the display, or
via RS-232 communication. The generic tune applied at the
factory will run properly in most systems, but the ability to
tweak the tuning to match a given system can make the difference
in whether the system simply runs, or whether it runs well. |
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| ?16 Bit Analog
to digital converter w/ 8 bit micro controller |
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Along with enhanced resolution, this
processor has enabled our mass flow meters and mass flow
controllers to grow in capability, response and stability. |
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| ?Local or remote
control function for controllers |
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The push button interface allows the user to
select whether the mass flow controller will recognize either a
local set point entered via the push button interface, an analog
set point provided to the mini-DIN connector, or a serial set
point provided via RS-232 communication. |
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| ?Multiple analog
outputs |
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All Alicat mass flow meters and mass flow
controllers have an analog output and RS-232 I/O, however a
second analog output can also be ordered. The second analog
output can be either a second output for the mass flow rate or
the second output might also be the volumetric flow rate, the
absolute pressure or the temperature. In addition, the analog
outputs can be ordered independently as 0- 5 Vdc, 0-10 Vdc, 1-5
Vdc, or 4-20 mA signals. |
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| ?Tare Function:
Automatic, Push Button or Remote |
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All Alicat mass flow meters, mass flow
controllers and pressure controllers with display include a push
button tare the operator can use to zero the meter when no flow
is present. With Alicat mass flow, volumetric and pressure
controllers, the tare is automatic when the set point is at zero
for longer than 2 seconds. A remote tare (ground to tare) is
also included for mass flow meters in integrated applications. |
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| ?Mass flow
controllers may be used to control absolute pressure or volume
flow |
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Field selectable loop closure allows a mass
flow controller to control absolute pressure or volumetric flow
rate. This saves in component and design costs, as the mass
controller can be set to be a pressure controller that also
provides information on the actual mass flow and volumetric flow
rates. (Note: Retuning loop parameters P & D may be necessary). |
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| ?Customization
Abilities |
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Alicat mass flow products provide alternative
units of measure, gas mixes, totalization, alternate STPs and
more at low cost. |
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| ?Digital and
Analog Communication |
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Alicat flow instrumentation comes standard
with both digital and analog communication. |
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