Omega Products FL2709B Installation Manual

OMEGA

Tedinologl.a

Cmm,.myl/

FL2900/6900/7900/8900 FL2700B/6700B/7700B/87OOB

Serie s

Pneumatic In-Line Flowmeters

Operator’s Manual: Ml

NOT use Aromatic

guard. Do Do NOT install this unit within 2 ft. of electrical transformers, high strength electric motors or other electro-magnetic devises

that could adversely effect the magnetic coupling between the Flow Indicator and the Piston Magnet.

The OMEGA’“’ Pneumatic In-Line Flowmeters monitor air flow rates to determine optimum performance, flow regulator settings, or pneumatic system performance. The 8700B Series feature direct reading scales for air flow. The 6900, 7900, and 8900 multi-pressure scales (from 40 to 130 mean accurate flow measurements can be made without the need for conversion calculations for pressure variations.

INSTALLATION: The flowmeter can be mounted vertically or horizontally in the flow line. Notice the flow arrow which is located on the meter scale, showing the direction which the flow must travel. The multi-pressure meter acts as a check valve in reverse flow.

CAUTION: The flowmeter contains a residual amount of petroleum base test fluid. This fluid may be incompatible or hazardous with some compressed gases.

All air meters must have a pressure gauge installed at the inlet port. The gauge should have than the actual pressure you are expecting to run. For example, if you are running your pressure at 100

with a

PSIG

range of at least 125 PSIG. Flow straighteners are not required at the inlet or exhaust ports. In fact, 90 degree elbows can be at either end of the meter or both if necessary.

OPERATION: Inside the meter is a sliding piston moving against a spring when the flow varies. This piston movement opens and closes an orifice, which is followed on the outside of the meter by a moving indicator ring, magnetically coupled to the internal piston. The meter has a graduated scale calibrated for air in SCFM (standard cubic feet per minute). The multi-pressure meters are calibrated for inlet pressure ranges commonly used from 40 at

The single pressure meters come standard with a single

70” pressure scale calibrated for inlet pressure of 100 specified by customer.

NOT

PSIG

175/1094

CAUTION

use Loctite thread locker or liquid teflon as thread sealant.

Hydocarbons, Halogenated Hydrocarbons, Ketones or Ester-based fluids on (or near) polycarbonate

FL27OOB,

range capacity at least 25% higher

PSIG

you should have a gauge dial

IMPORTANT..... READ BEFORE INSTALLING!

67OOB,

77008, and

PSIG

FL2900,

PSIG)

to 130 PSIG,

or otherwise

TO READ SINGLE PRESSURE SCALE METERS: The flowmeters are available pre-calibrated at 100 PSIG,

56% Relative Humidity. You will be able to determine your air flow to within the center line on the indicator ring under the clear lexan dust guard. When flow is moving through the meter, the indicator ring will move along under the guard. The flow rate is determined by matching the position of the indicator ring center line and it ’s related position on the scale. When inlet pressure changes, the scale must be corrected to the new inlet pressure. Temperature affects the scale so little that in most cases it can be ignored.

Figure

t4%

when operating at 100

PSIG

inlet pressure. Notice

70°F

and

INLET PRESSURE

Meter Inlet Press

(B) INDICATOR

CENTER LINE

TO READ MULTI-PRESSURE SCALES: Using the pressure scale line that corresponds to the pressure gauge

reading at the inlet port, you will be able to determine your flow within

t_4% the orange center-line on the indicator ring under the clear lexan dust guard. When flow is moving through the meter, the indicator ring will move along under the guard. The flow rate is determined by matching the position of the indicator ring orange center-line and its related position on the flow scale of the pressure line being used. When the pressure changes, the new flow scale is determined by a new pressure line on the meter (see Figure 1).

When operating at a pressure greater than is displayed on scale, use the 100 Meters”.

without additional calculations (See Figure

scale line and refer to “How to Read Single Pressure

PSIG

I).

Notice

SCALE READING INSTRUCTIONS Example: (A) (B) (C)

DFMO995FVRl C

Meter Inlet Pressure (PSIG)

Note inlet pressure from gauge, 60 Note where indicator center line crosses the inlet pressure line Read curve line to datum flow = 40 SCFM

PSIG

60 PSIG.

Use the three following basic steps for simple reading accuracy or conversion.

Add the proper size pressure gauge to the line directly in front of the Flowmeter inlet. If an air tool is used downstream of the meter, you will notice no flow through the meter when the trigger valve of the tool is in the on (closed) position, and the pressure gauge will show system pressure.

Now, shift the valve or trigger and allow the air to flow through the meter. Notice the pressure reading on the gauge If it is around

100 PSIG, at the pressure the flowmeter is calibrated, the air flow can be read directly off the meter. If the pressure is higher or lower than 100 PSIG, you must convert the scale (see Figure 2).

Conversion Example: Inlet gauge pressure = 50

PSIG SCFM indicated on scale = 60 SCFM (at 100

PSIG

pre-calibrated pressure)

Basic formula, SCFM (actual) = SCFM (indicated)

f l

Basic equation =

= 114.7

14.7 +

PSIG

Substituting your inlet pressure into the basic equation, in place of PSIG:

.114.7

(PSIG)

14.7 + 50

-J

NOW SCFM (actual) = 60 SCFM

= 1.33

100

PSIG

(indicated)

PSIG

= 45 SCFM

Reading directly off the pre-calibrated chart (see Figure “50 PSIG ”, read 1.331 as the conversion factor

2), under

fl.

Figure 2

CLEANING/MAINTENANCE See Figure 3. It is not necessary to remove the clear lexan dust guard

to clean the meter. DO NOT use cleaning solvent on the lexan guard. I.

Note how the flow disassembles, for ease of reassembly.

Remove flow meter from system. Remove excess piping from meter.

2. Thoroughly wipe off outside of flow meter assembly, removing all foreign matter.

Remove inlet cap from body assembly. This should be the only part which needs to be disassembled with tools. The internal parts should slide out when tilted. If they do not, refer to Section II before continuing.

4. Place all meter parts on a work surface in order of disassembly.

5. Clean and dry the spring and cap assembly.

6. Disassemble and clean piston, magnet, shim and piston ring.

7. Clean disassembled parts.

Reassemble the cleaned parts and check the inlet cap to make sure the O-ring does not have any nicks or cuts. If it does, it is recommended that you replace it.

II.

Maintenance check after disassembly

Did the parts come out of the meter freely? If not, push parts out by inserting a wooden rod into the outlet end.

Look for any foreign matter within the meter and on internal parts.

It may be necessary to determine where the foreign matter is coming from.

It may be necessary to add a finer filtration system.

3. Look for any scored or worn parts inside the body, especially around the piston assembly.

a. Replace any badly worn parts. b. Meters may be sent back to OMEGA for inspection and

repair.

Before placing meter back into operation, the cause of contamination should be determined and eliminated, otherwise this problem will be repeated. Meter damage caused by excessive contamination will not be covered under warranty.

SUMMARY:

Add the pressure gauge as close as possible to the inlet port of the meter.

2. Turn on air and operate.

3. Use conversion factor when operating at pressures other than 100 PSIG.

SPECIFICATIONS

ALL MODELS

*4%

ACCURACY: REPEATABILITY: PRESSURE RATING: MAX. TEMPERATURE:

7700B.

FL2700B.

6700B.

8700B SERIES:

MATERIALS:

SIZE/SHIPPING WEIGHT:

FL2900,6900,7900,8900 MATERIALS: Anodized aluminum body with

+I%

PSIG

600 210°F

max.

(180°F

for

%”

series)

#CA360 brass body with plastic gland, piston, and metering cone (except

series

-Celcon stainless steel spring and nickel-plated Alnico magnet

1/4”-1202, 1%“-20%

%“-2lbs.

Ibs

?/4”-4lbs.

SERIES

dichromate

sealed anodized aluminum cone and piston series uses polyacetal cone), SS spring, and nickel plated alnico magnet

cone),

(FL6900

+ 2 hidden pages