Omega FL-2500 User manual

FL-2500
Acrylic Flow Meters
www.omega.com
e-mail: [email protected]
User’s Guide
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INSTALLATION AND OPERATING INSTRUCTIONS
FOR FL-2500 ACRYLIC FLOW METERS
Unpacking the FL-2500 Acrylic Flow Meter
INSPECT PACKAGE FOR EXTERNAL DAMAGE Your FL-2500 Acrylic Flow Meter was care-
fully packed in a sturdy cardboard carton, with anti-static cushioning materials to withstand
shipping shock. Upon receipt, inspect the package for possible external damage. In case of
external damage to the package contact the shipping company immediately.
UNPACK THE FL-2500 ACRYLIC FLOW METER Open the carton carefully from the top and
inspect for any sign of concealed shipping damage. In addition to contacting the shipping
carrier please forward a copy of any damage report to Omega®
.
When unpacking the instrument please make sure that you have all the items indicated on
the Packing List. Please report any shortages promptly.
Specifications
ACCURACY: ± 5% of full scale reading.
FLOAT MATERIALS: Glass (black colored), 316 Stainless Steel (silver colored), Tungsten
Carbide (Carboloy- silver colored).
FITTINGS: Brass or 316 Stainless Steel.
O-RINGS: FKM is standard, Buna, EPR are optionally available.
VALVES: Built-in needle valves are available.
MAXIMUM SERVICE TEMPERATURE: 65 °C (150 °F).
MAXIMUM SERVICE PRESSURE: 700 kPA (100 psig).
SCALES: Direct reading dual scales mounted interchangeably at rear of flow meter block.
Each scale has both metric and English system units displayed. Scales are mounted by
means of locating holes between the rear of the acrylic block and the yellow colored back-
ing plate. Customers can easily exchange scales for different fluids, and flow rates. Kit
comes with seven interchangeable direct reading dual scales: Air (air scale comes installed),
Water, Argon, CO2, Helium, Nitrogen, and Oxygen.
FLOAT READINGS: At center of ball shaped floats.
Installation
MOUNTING: Flow meters are shipped ready for panel (rear) mounting, and are easily con-
vertible to partial or full “in-line” configurations (see diagram). To convert, exchange Plug
Seals (3) and Female Adaptors (9) correspondingly using a 5/32" hex wrench and a 1/2"
open box wrench. Panel or “in-line” mounting is through 11/16" diameter holes, using hex
nuts supplied. 1

2
THE FOLLOWING CONFIGURATIONS ARE POSSIBLE:
1) Panel Mounting, using hex nuts at rear of meter.
2) Full In-line Mounting (not available for meters with valve options.)
3) Partial In-line Mountings, i.e. inlet at bottom, outlet at top rear, or inlet at bottom
rear and outlet at top center.
To Exchange Scales: Select Option A, B, or C
A. NO VALVE OPTION (Styles 2, 4, 14)
1) Using a 1/2 open box wrench or 5/16" hex wrench remove rear fittings (Female
Adaptor (9) for the panel mounting option or Plug Seal (3) for the in-line mounting
option).
2) Remove Back Plate (2) and Scale (7) by sliding both to either side.
3) Holding the desired scale align its holes with those in the Back Plate. Slide both
behind the bracket (5).
4) Insert but do not completely tighten fittings.
5) Recheck Back Plate (2) alignment.
6) Tighten fittings.
B. VALVE OPTION (Styles 2,4)
1) Using a 1/2 open box wrench remove top Female Adaptor (9).
2) Loosen Valve Cartridge (11) allowing the lower female (12) to be unscrewed.
Do not remove Cartridge from the meter.
3) Remove Back Plate (2) and Scale (7) by sliding both to either side.
4) Holding the desired scale align its holes with those in the Back Plate. Slide both
behind the bracket (5).
5) Insert but do not completely tighten top Female Adaptor (9).
6) Insert but do not completely tighten lower Female Adaptor (12) (it has an extra
orifice and O-ring on it), while keeping Valve Cartridge (11) in place.
7) Screw Valve Cartridge (11) into lower Female Adaptor (12).
8) Recheck Back Plate (2) alignment.
9) Tighten both Female Adaptors (9), (12).
10) Tighten Valve Cartridge (11). Do not over tighten it.
C. VALVE OPTION (Style 14)
1) Use a 1/16" hex wrench to loosen 2 set screws on Knob (15).
2) Using a 1/2" open box wrench, remove Valve Cartridge (13) and top Female
Adaptor (9).
3) Remove Back Plate (2) and Scale (7) by sliding them to either side.
4) Holding the desired scale align its holes with those in the Back Plate slide them
behind Brackets (5).
5) Insert but do not completely tighten top Female Adaptor (9).
6) Insert but do not completely tighten Valve cartridge (13).
7) Recheck Back Plate (2) alignment.
8) Tighten Female Adaptor (9) and Valve cartridge (13).
9) Secure Knob, tighten its set screws.

Cleaning: Disassembly, Re-Assembly
From time to time you may need to clean the meter. Clean with mild soup solution. Dry out
with air or inert gas. Disassembly and reassembly has to be done in a clean environment.
Disassembly
First, follow the common steps, then select Option A, B, or C, based on the block style.
1) Unscrew top Plug Seal (3) using a 5/32" hex wrench and remove Bumping spring (8).
2) Flip the meter over and let the spherical float fall out on to a clean surface. The float
should be handled with appropriate tweezers. Do not touch it with fingers. Store the
float in a clean bag or box, free of grease.
A. NO VALVE OPTION (Styles 2, 4, 14)
Unscrew top Plug Seal (3) using a 5/32" hex wrench and remove Bumping
Spring (8).
B. VALVE OPTION (Styles 2,4)
Unscrew Valve Cartridge (11) using a 1/2" open box wrench. Unscrew
bottom Plug Seal (3) using a 5/32" hex wrench and remove Bumping Spring (8).
C. VALVE OPTION (Style 14)
Use a 1/16" hex wrench to loosen 2 set screws on Knob (15). Remove Valve
Cartridge (13) using a 1/2" open box wrench. Unscrew bottom Plug Seal (3); push
out the plastic y-shape float stop toward the wide bore using an appropriate
non-metal stick.
3

4
Re-assembly: Select Option A, B, or C
A. NO VALVE OPTION (Styles 2, 4, 14)
Install Bumping Spring (8) in the bottom cavity; secure it by screwing in Plug Seal (3)
until it is flush with Bracket (5). Proceed to steps 1-3.
B. VALVE OPTION (Styles 2,4)
Install Bumping Spring (8) in the bottom cavity; while squeezing the spring with appropri-
ate flat stick insert Valve Cartridge (11), tighten it. Screw in bottom Plug Seal (3) until it is
flush with Bracket (5). Proceed to steps 1-3.
C. VALVE OPTION (Style 14)
Insert the plastic Y-shape Float Stop (14) from the wide bore using an appropriate non-
metal stick; push the stop all the way down the bore. Screw in Valve Cartridge (13), and
reinstall Knob (15). Screw in bottom Plug Seal (3) until it is flush with Bracket (5).
Proceed to steps 1-3.
STEPS: 1. Insert Float (6),
2. Insert Bumping Spring (8) into the top cavity; secure it by screwing in Plug
Seal (3) until it is flush with Bracket (5).
3. Shake the meter making sure the ball is floating free without restrictions.

5
In-Line Version ( Styles 2, 4, 14)
Valve Option Version (Styles 2, 4)

6
Panel Mount Version (Styles 2, 4, 14)
TYPICAL SCALES
PARTS LIST
ITEM QTY DESCRIPTION MATERIAL
1 1 Block Acrylic
2 1 Back Plate, yellow Polyethylene
3 2 Seal Plug Brass or
316 Stainless Steel
4 4 O-ring FKM
5 2 Bracket Structural aluminum
6 1 Float
Glass or 316
Stainless Steel or
Carboloy
7 1 Scale Film
8 2 Bumping Spring 316 Stainless Steel
91 or 2 Female Adaptor Brass or
316 Stainless Steel
10 2 Pal Nut Steel
11 1 Valve Cartridge
Wetted parts: PVDF
or Polyoxymethylene,
316 Stainless Steel,
FKM O-ring.
12 1 Female Adaptor for
Valve Cartridge
Brass or
316 Stainless Steel

7
Valve Option (Styles 14)
PARTS LIST (For valve option/style 14 only)
ITEM QTY DESCRIPTION MATERIAL
1 1 Block, style 14 Acrylic
2 1 Back Plate, yellow Polyethelene
3 2 Seal Plug Brass or 316 stainless steel
4 3 O-ring FKM
5 2 Bracket Structural aluminum
6 1 Float 316 Stainless Steel
7 1 Scale Film
8 1 Bumping Spring 316 Stainless Steel
9 1 Female Adapter Brass or 316 Stainless Steel
10 2 Pal Nut Steel
13 1 Valve Cartridge Wetted Parts:
PFVD or brass,
Stainless Steel,
FKM O-Rings
14 1 TFE
15 1 Plastic, Steel

8
DIMENSIONAL DRAWINGS