Omega MASS FLOW FMA-1900 User manual

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FMA-1900
Mass Flow Meter
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The information contained in this document is believed to be correct but OMEGA Engineering, Inc. accepts
no liability for any errors it contains, and reserves the right to alter specifications without notice.
WARNING: These products are not designed for use in, and should not be used for, patient connected applications.
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M248310898
to
searchforleaks
inside oroutsidetheFMA-1900. Instead,monitorpressure decay.
Operator’sManual
B Do notuseliquidleak detectors
510%. Ifyou are providingyourown
powersource, refer to Section 2.3,paragraph 8, forspecific power
supplyrequirements andjumpersettings.
@ 24VDC
mV RMSripple)withthe abilityto provide atleast6
watts(250mA)
B The FMA-1900controller requires a 24VDCregulated
powersupply(50
mA outputorinputsection.
B The FMA-1900is notaloop powered device!Do NOT
apply power tothe 4-20
(5O”C), respectively. 122°F kg/cm* gauge)or
B Themaximumpressure andtemperatureintheflowlinein
which yourFMA-1900isto beinstalledshould notexceed 150 psig
(10
m Over-tighteningthe pipeconnectionmay crackthe
fittings orshift thecalibration of theFMA-1900controller.
B OmegaEngineeringis notliableforany damages or
personal injury,whatsoever, resultingfromthe use ofOmega’smass
flowmeters orcontrollerswith oxygen gas.Althoughthemassflow
meters and controllers are cleaned prior to shipment,wemake no
claimorwarrantythat theircleanlinessrendersthemsafeforoxygen
service.ThecustomermustcleanOmega’smassflowmeters or
controllerstothe degreethat theyrequirefor theiroxygenflow
applications.This statementdoes not replace productwarranty.

SetpointConfiguration
...................................................
15
3.10
Cold Sensor Lockout Circuit
..........................................
16
3.11 Auto Shut-Off
.................................................................
16
SetpointInput Signal
......................................................
13
3.9
Setpoint
Adjustments
............................
12
3.6
Mounting
Position..........................................................
13
3.7
Output Options
...............................................................
13
3.8
mA Output Signal
...........................................
12
3.5
Zero and
Local
..................................
11
3.3
Overranging
...................................................................
12
3.4
The 4-20
_.
11
3.2
Accuracy
.....................................
.......................................................
................................................................................... 11
3.1
Referencing the Flow Rate to Other Temperature and
......
Pressure
Conditions
.
1.1
Description.. .....................................................................
1
1.2
Specifications
..................................................................
2
2. Installation
..................................................................................
4
2.1
Receipt of Your
FMA-1900
...............................................
4
2.2
Return
Shipment..............................................................
4
2.3
Before Beginning the Installation
.....................................
5
2.4
Mechanical Installation
....................................................
7
2.5
Plumbing
Connections
.....................................................
8
2.6
Electrical
Connections
.....................................................
9
3.
Operation
FMA-1900 SERIES FLOW CONTROLLERS
TABLE O F
CONTENT S
1
Introduction
............................................................................
1

.,............................. 19
Appendix C K-factors and Gas Tables
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..*..........
20
FMA-1900 SERIES FLOW CONTROLLERS
TABLE O F
CONTENTS CONTINUE D
3. Operation (continued)
3.12 On/Off Control
...............................................................
16
3.13Purging of Mass-Trak Products
.....................................
17
3.13.1 Purging of Non-reactive Gases
.....................................
17
Appendix A Pin Connections
..........................................................
18
Appendix B Purge and Valve Off Connections

I- 1 The FMA- 1900 Flow Controller
ZERO
SET POINT
+1.5% of full scale over a wide temperature and pressure
range, and time response is 5 seconds to within 2% of set
point.
The FMA-1900 is ideal for a complete range of gas flow
applications including general process control, laboratories,
instrument OEM’s, gas panels, and flow calibration.
Figure
-I-
INTRODUCTIO N
1.1
Description
Omega’s FMA-1900 Series products can be calibrated to
measure and control the mass flow rate of gases in several
ranges from O-l 0 standard cubic centimeters per minute
(SCCM) to
O-50 standard liters per minute (SLM). Accuracy is

flO%
SLM/24
VDC
flO%; 0 to 50SLM/15VDC
mA into 1000 ohm
maximum load resistance for 24 VDC supply (500 ohm/l5
VDC supply).
CONTROL RANGE: Calibrated for 10 to 100% of full scale.
INPUT POWER: 0 to 15
kg/cm*)
optimum.
GASES: Most gases (e.g., air, nitrogen, methane, carbon
dioxide, argon, helium, hydrogen); check compatibility with
wetted materials; specify when ordering.
OUTPUT SIGNALS: Linear O-5 VDC into 2000 Ohm minimum
load resistance standard or linear 4-20
kg/cm*) differential standard; 30 PSI (2(0.35-3.5
nm3/h).
FMA-1900 SERIES MINIMUM DP REQUIREMENTS: 5-50
PSI
“C(70°F). Other ranges in other units are available (e.g.,
SCFH or
.l
“D” connector is provided for power input, output signal and set
point control. FMA-1900 is available in several basic configu-
rations with either NPT (female) or compression inlet/outlet
fittings, and with or without the optional power supply.
l&Specifications
FLOW RATES: O-10 SCCM to O-50 SLM; flow ranges speci-
fied are for an equivalent flow of nitrogen at 760 mm Hg and
21
15-pin
mA
output
signals, which are linearly proportional to gas mass flow rate,
are provided for recording, data-logging, or control. A
The versatile FMA-1900 product digitally displays the mass
flow rate directly in engineering units or percent of full scale.
The FMA-1900 is a transducer requiring a regulated 24 VDC
external power source. The O-5 VDC and 4-20

mA into 250
Ohms input impedance.
mA and 4-20
SETPOINT COMMAND SIGNALS: O-5 VDC (O-10 VDC
optional) into 22000 Ohms. O-20
“C”-rings.
66;316 stainless steel,
430F stainless steel; nickel plating; Viton
Nyton WEllED MATERIALS: 10% glass-filled
GASANDAMBIENTTEMPERATURE: 32” to 122°F (0 to 50°C)
valve.)
cc/set of helium maximum
to outside environment. (Not recommended for use as a positive
shutoff
lo-‘ATM
kg/cm*) gauge optimum.
LEAK INTEGRITY: 1 x
kg/cm*) gauge maximum;
20 PSI (1.4
kg/cm*), or better:
RESPONSE TIME: One second to 63% of final value.
GAS PRESSURE: 150 PSI (10
“C, or better.
PRESSURE COEFFICIENT: 0.02% of full scale per PSI (0.07
COEFFICIENTI
0.08% of full scale per
scale.
TEMPERATURE
of full &0.25% REPEATABILIW
O-100% of full scale. fl.5% of full scale from 1ACCURACY

2.2 Return Shipment
Do not return any equipment without a Return Authorization,
obtainable from the Customer Service Department at the
number shown above.
Information describing the problem, the corrective action or work to
be accomplished at the factory, the purchase order number under
which the work is to be done, and the name of person to contact
must be included with the returned equipment.
NOTE:Equipment returned for repair that is found to be com-
pletely operational will be subject to the current “no problem
found” billing rate.
In a case such as this, Omega will attempt to
identify possible problems with the installation or application.
(800~USA-WHEN).
Have your purchase order and model number available.
2.1 Receipt of Your FMA-1900
After receiving your FMA-1900, carefully check the outside of
the packing carton for damage incurred in shipment. If the
packing carton is damaged, notify the carrier at once regarding
their liability. A report with the serial number and part number
should be submitted to Customer Service. Call 800-622-2378
for detailed instructions.
Remove the packing slip from its envelope and check that the
carton contains all parts listed. Make sure spare parts or
accessories are not discarded with the packing material. In
case of shortages, contact 800-872-9436
-2-
INSTALLATIO N

mA is for zero flow. mA is for one-half of full scale; and 4.00
mA is the output signal for the full scale; 12.00
mA output
signal, 20.00
linearty proportional to the gas
mass flow rate. The full scale range and the gas for which
the unit was calibrated are shown on the FMA-1900 data
tag. Section
2.6, ELECTRICAL CONNECTIONS, describes
the electrical output signal hookup. For example, if you are
monitoring the O-5 VDC output signal, 5.00 VDC is the
output signal for the full scale listed on the FMA-1900 data
tag; 2.50 VDC is for one-half of full scale; and 0.00 VDC is
for zero flow.
If you are monitoring the 4-20
mA output signals. The effective
control range of the unit is 10% to 100% of the calibrated
flow range. The output is
mA output or input section.
4.
After the warm-up period, your FMA-1900 will begin
monitoring the gas mass flow rate.
5. Output Signals: The FMA-1900 has either O-5 VDC (O-l 0
VDC optional) or 4-20
4mA, depending on output configu-
ration). Allow at least 15 minutes for complete warmup.
CAUTION: The FMA-1900 is not a loop powered device!
Do NOT apply power to the 4-20
“D”
connec-
tor on the side of your FMA-1900, then plug the power
supply into line power. If you are providing your own
power source, refer to Section 2.3, paragraph 8, for
specific power supply requirements and jumper settings.
3.Upon application of power, the output signal will be at a high
level for the first 10 to 20 seconds, after which (assuming zero
flow) it will drop to 0 VDC (or
15-pin
kg/cm* gauge) or 150°F (66°C). Maximum
operating pressure differential is 50 psig.
2. Apply power to your FMA-1900. If you are using the
Omega power supply, connect it to the
l/4-inchpipe, use a good
quality paste pipe thread sealant. First tighten the fittings
by hand, then tighten no more than one and a half turns to
avoid cracked fittings or creating a calibration shift.
The line pressure and temperature should not exceed 150
psig (10
2.3 Before Beginning the Installation
Read the following notes in their entirety before beginning
actual installation of your FMA-1900 flow controller.
1. Using the flow direction arrow on the FMA-1900 to prop-
erly orient the controller, install the FMA-1900 into the gas
flow line. If you are utilizing