Bios International Corporation
10 Park Place
Butler, New Jersey, USA 07405
Phone (9 7 3 ) 4 9 2 8 4 0 0
Toll Free (8 0 0) 6 6 3 4 9 7 7
Fax (9 7 3 ) 4 9 2 8 2 7 0
Email sales@drycal.com
Web www.drycal.com
© 2005 • Bios International Corporation
MK01-22 A
DryCal®Multiple Flow Source (MFS) Manual
Table of Contents
1.0 DryCal MFS Features 2
2.0 Warnings 3
3 .0 General Description 3
4.0 Theory of Operation 3
5.0 Operating Instructions 4
7.0 MFS Maintenance 5
8.0 Return Authorization 5
9.0 Shipment 5
10.0 Limited Warranty 6
DryCal MFS Specifications
Dimensions (H x W x D) 7.75 x 14.25 x 9.75 inches • 197 x 362 x 248 mm
Weight 27 lbs • 12,247 g
Flow Range 10 – 50,000 ccm, external (unregulated)
Gas Compatibility Non-corrosive, non-condensing, non-combustible gases,
less then 70% humidity
Inlet Fitting1⁄4 inch NPT
External Fitting1⁄4 inch NPT
Flow Outlets (Low & High)1⁄4 inch Swagelok®compression
Warranty 1 year
Ambient Temperature 10–40° C
StorageTemperature 0–70° C
Ambient Humidity 0–70%, non-condensing
Gauge Dual pressure output, 0–160 PSI & 0–100 PSI
Operating Pressure (Nominal) 150 PSI max. input
Flow Stability ± 0.03% at constant temperature
Regulators Dual high precision, non-venting
Restrictors Integrated
2.0 Warnings
!
The DryCal MFS is not rated intrinsically safe and is not for use with explosive
gasses or for use in explosive environments.
!
Input Pressure should not exceed 150 PSI
!
For use with clean laboratory air or other inert, non-corrosive,
non-combustible, non-hazardous gasses only.
3.0 General Description
The MFS is a non-electrical multiple range flow controller.The MFS provides a sta-
ble airflow for checking any type of flow measurement device. Two precision
regulators, followed by eleven precision porous restrictors, provide control over a
broad range of flow rates, from 10–50,000 ccm. Twelve pneumatic toggle valves
make selecting and adjusting flows quick and simple.
Additionally, an external unrestricted variable pressure flow port can provide a
flow rate of up to 30 0,000 ccm (pressure dependent.)
4.0 Theory of Operation
The MFS provides flow metrologists a simple and cost effective solution to stable
low flow gas delivery.The MFS works by forcing triple regulated compressed gas
through precision porous metal flow restrictors to create stable gas flows for use
in testing unregulated flow measurement devices.
Gas flow is stepped down though two high precision pressure regulators before
passing through a user-selected precision porous metal flow restrictor.
Precision porous metal flow restrictors are reliable, cost-effective replacements for
orifices, capillaries, or micrometering valves. A porous metal flow restrictor is, in
effect, a multiple orifice device with many very small holes, creating a vast number
of random pathways. Typically, a porous metal restrictor has a porous surface area
500 times that of an equivalent orifice. The flow restrictors used in the MFS chan-
nel gas through hundreds of pores instead of just one, reducing gas exit velocity.
Because gas and particulate move slower through the element, porous metal flow
restrictors incur less wear, and last longer. The porous metal restrictors used in the
Bios DryCal MFS system resist such physical change because of the lower veloci-
ties and virtual absence of erosion, resulting in more consistent, reliable flow
restriction.
32
1.0 DryCal MFS Features
Front and Side
Back and Side
First Stage
Regulator Controls
Second Stage
Regulator Controls
First Stage
Regulator Gauge
Second Stage
Regulator Gauge
High Flow
Outlet Fitting
Connect tubing
here for high flows
Low Flow
Outlet Fitting
Connect tubing
here for low flows
Flow Range
Selector Toggles
External Outlet
Fitting
Connect DUT here
if you are using the
MFS as a stable
pressure source
Inlet Fitting
Connect gas
source here
7.0 MFS Maintenance
The MFS is a rugged instrument that with normal use does not require mainte-
nance.
8.0 Return Authorization
Should the need for service arise, please contact Bios International for a RMA
number prior to returning your MFS for service. You can telephone Bios at
(800) 663 4977 or (973) 492 8400, or email service@drycal.com.
9.0 Shipment
When shipping the DryCal MFS please ensure that the packaging is adequate to
protect the instrument. When possible the DryCal MFS should be shipped in the
original packaging. Bios International is not responsible for damage that occurs
during shipment.
54
5.0 Operating Instructions
For Use as a Stable Flow Source
1 Turn all pneumatic toggle valves to the off (up) position.
2 Connect the MFS inlet on rear of unit to a clean, dry, oil-free compressed gas
source (150 PSI max.)
3 Toggle the 1K—2K valve to the on (down) position.
4 Set the First Stage regulator (80—100 PSI.)
5 Adjust the Second Stage regulator (30—60 PSI.)
6 Toggle the 1K—2K valve to the off (up) position.
7 Depending on the flow range selected, connect the flow measurement device
to the Low Flow Outlet (10—1,000 ccm) or the High Flow Outlet (1,000—50,000
ccm), located on the front of the MFS.
8 Select the toggle switch for your desired flow range and toggle it to on
(down.) Multiple toggle switches may be turned on simultaneously to obtain a
cumulative flow. Allow sufficient time for thermal stabilization of the selected
nozzles(s) (lower flows may take longer to stabilize.)
9 Vary the Second Stage regulator’s pressure to dial in the desired flow.
For Use as a Stable Pressure Source
1 Turn all pneumatic toggle valves to the off (up) position.
2 Connect the MFS inlet to a clean, dry, oil-free compressed gas source
(150 PSI max.)
3 Toggle the 1K—2K valve to the on (down) position.
4 Set the First Stage regulator (80—100 PSI.)
5 Vary pressure using the Second Stage regulator to select an appropriate
pressure for the External outlet.
6 Toggle the 1K—2K valve to the off (up) position.
7 Connect the flow measurement device to the External outlet located on the
back of the MFS.
8 Select the toggle switch for the External outlet and toggle it to on (down.)
Notes10.0 Limited Warranty
The Bios DryCal MFS is warranted to the original end user to be free from defects
in materials and workmanship under normal use and service for a period of 1 year
from the date of purchase as shown on the purchaser’s receipt. If the unit was pur-
chased from an authorized reseller a copy of an invoice or packing slip showing
the date of purchase may be required to obtain warranty service.
The obligation of Bios International Corporation under this warranty shall be lim-
ited to repair or replacement (at our option), during the warranty period, of any
part which proves defective in material or workmanship under normal use and ser-
vice provided the product is returned to Bios International Corporation,
transportation charges prepaid.
Notwithstanding the foregoing, Bios International Corporation shall have no liabil-
ity to repair or replace any Bios International Corporation product:
1 Which has been damaged following sale, including but not limited to damage
resulting from improper electrical voltages or currents, defacement, misuse,
abuse, neglect, accident, fire, flood, act of God or use in violation of the
instructions furnished by Bios International Corporation,
2 Where the serial number has been altered or removed or
3 Which has been repaired, altered or maintained by any person or party other
than Bios International Corporation’s own service facility or a Bios-authorized
service center.
This warranty is in lieu of all other warranties, and all other obligations or liabilities
arising as a result of any defect or deficiency of the DryCal MFS, whether in con-
tract or in tort or otherwise. All other warranties, expressed or implied, including
any implied warranties of Merchantability and fitness for a particular purpose, are
specifically excluded.
In no event shall we be liable for any special, incidental or consequential damages
for breach of this or any other warranty, express or implied, whatsoever.
6
Notes
Loading...