Matheson FM-1000 User manual

INT-0131 Rev C
FM-1000/FM-1050
FLOWMETERS
Operation Instructions
READ AND COMPLY WITH THESE INSTRUCTIONS BEFORE
INSTALLING, OPERATING, OR SERVICING

Table of Contents
I. SERVICE ........................................................................................................1
II. LIMITED WARRANTY ...................................................................................2
III. USER RESPONSIBILITY.................................................................................3
IV. GENERAL ....................................................................................................4
V. INSTALLATION.............................................................................................4
VI. MOUNTING ................................................................................................5
VII. OPERATION ...............................................................................................5
VIII. DISASSEMBLY AND REASSEMBLY .............................................................6
IX. CLEANING PROCEDURE ..............................................................................7
X. VALVE REMOVAL AND INSTALLTION ...........................................................7

1
I. SERVICE
General Service
A unit which is not functioning in a normal manner should be removed from service until
such time that repairs or replacement can be made. Upon completion of repair, full
testing should be performed to assure the user that the unit has been returned to its
original operating parameters. MATHESON can repair or replace equipment. To
arrange for repair or replacement service, call 1-800-828-4313 and ask for the Warranty
Administrator. No product will be received by MATHESON without indication of
gas service and without proper return material authorization provided by the
warranty administrator. (All repairs must be made by MATHESON or an
assigned and approved facility to maintain any warranties or guarantees).
If the unit is under an applicable warranty, return the unit to MATHESON for repair or
replacement. To arrange for warranty service, call 1-800-828-4313 and ask for the
Warranty Administrator. No product will be received by MATHESON without
indication of gas service and without proper return material authorization provided
by the warranty administrator.
If advised by the Warranty Administrator to return the product to MATHESON, prepare
the product for shipment and write, in large lettering the RMA Number assigned by the
Warranty Administrator on the outside of the box. Also, if required by the Warranty
Administrator, supply the completed RMA form with the product. Make sure that the
product is adequately packaged, in the original shipping container if possible, and
shipped prepaid (MATHESON will not accept COD freight) with a description of the
observed deficiency to the attention of the:
Warranty Administrator
MATHESON
166 Keystone Drive
Montgomeryville, PA 18936
The user is expected to periodically inspect the product for leaks, loose or worn parts,
broken or non-functioning components and to address those situations immediately. If
the user would require verbal assistance in ascertaining the potential of a problem with
any MATHESON product, contact the local MATHESON branch for assistance or your
MATHESON Sales Representative.

2
II. LIMITED WARRANTY
This equipment is sold by MATHESON under the warranties set forth in the following
paragraphs. Such warranties are extended only with respect to the purchase of this
equipment directly from MATHESON or MATHESON's Authorized Agent as new
merchandise and are extended to the first Buyer thereof other for than the purpose of
resale.
For a period of one year from date of original delivery (ninety days in corrosive service)
to Buyer or to Buyer's order, this equipment, is warranted to be free from functional
defects in materials and workmanship and to conform to the description of this equipment
contained in this manual and any accompanying labels and/or inserts, provided that this
equipment is properly operated under the conditions of normal use and that regular and
periodic maintenance and service is performed or replacements are made in accordance
with the instructions provided. Expendable parts of this equipment are similarly
warranted to be free from functional defects in materials and workmanship and to
conform to the description of this equipment contained in this manual and any
accompanying labels and/or inserts. The foregoing warranties shall not apply if the
equipment has been repaired other than by MATHESON or a service facility designated
by MATHESON, or if this equipment has not been operated and maintained in
accordance with written instructions provided by MATHESON, or has been altered by
anyone other than MATHESON, or if the equipment has been subject to abuse, misuse,
negligence or accident.
MATHESON's sole and exclusive obligation and the Buyer's sole and exclusive remedy
under the above warranties is limited to repairing or replacing, free of charge, at
MATHESON's sole discretion, the equipment or part which is telephonically reported to
be a problem to the local MATHESON Branch Location, and which if so advised, is
returned with a written statement of the observed deficiency, not later than seven days
after the expiration of the applicable warranty, to the MATHESON Gas Equipment
Technology Center during normal business hours, transportation charges prepaid, and
which, upon examination, is found to comply with the above warranties. The Buyer
shall pay for return trip transportation charges for the equipment or part.
MATHESON shall not be otherwise liable for any damages including but not
limited to incidental damages, consequential damages, or special damages, whether
such damages result from negligence, breach of warranty or otherwise.
There are no express or implied warranties that extend beyond the warranties
hereinabove set forth. MATHESON makes no warranty of merchantability or
fitness for a particular purpose with respect to the equipment or parts thereof.
Acceptance of the equipment by the final buyer indicates the final buyer’s
acceptance of all warranties and limitations set forth above.

3
III. USER RESPONSIBILITY
This equipment will perform in conformity with the description thereof contained in this
manual and accompanying labels and/or inserts when installed, operated, maintained and
repaired in accordance with the instructions provided. This equipment must be checked
periodically, with the frequency of such inspections depending upon the scope of use.
Damaged, worn or contaminated equipment should not be used. Parts that are broken,
missing, plainly worn, distorted or contaminated should be replaced immediately.
Should such repair or replacement become necessary, MATHESON recommends that a
telephonic or written request for service advice be made to the MATHESON Equipment
Engineering Group in Montgomeryville Pennsylvania or to the nearest MATHESON
branch location.
This equipment or any of its parts should not be altered without the prior written approval
of MATHESON Equipment Engineering Group. The user of this equipment shall have
the sole responsibility for any malfunction, which results from improper use, faulty
maintenance, damage, improper repair or alteration by anyone other than MATHESON
or a service facility designated by MATHESON. Further, the ultimate user of the
equipment is responsible for the training and safe operation of the equipment by
personnel in his/her employ.

4
IV. GENERAL
MATHESON flowmeters combine construction and performance features essential to
accurate low flow measurement. This information is intended as a guide to efficient use;
careful compliance should result in long and useful service.
V. INSTALLATION
1. Immediately after unpacking, inspect unit for any damage incurred during
shipment. Follow instructions on “Damage or Shortage” slip in packing
container.
2. If a unit is supplied with an integral valve then ensure that the valve is open.
3. Check for free movement of float (s). Place meter horizontally on a flat
surface with the ball float (s) at the maximum flow end of the tube (outlet).
Incline this end of the meter approximately 10°. The float (s) should descend
at a constant rate. As the float (s) approach the zero reference mark, they may
slow down or hesitate. This is due to the close fit between the float and the
tube. Foreign particles occasionally prevent the continuous motion of the
float. Repeat the above operation several times. If the float sticks then see
the “CLEANING PROCEDURE” shown below.
4. A 25 micron filter is recommended to be installed immediately upstream for
meters where dirt can interfere with operation.

5
VI. MOUNTING
1. The meter must be mounted in a vertical position with the inlet (lowest end of
the scale reading) at the bottom. Attitude of more than 5° from the vertical
will affect the accuracy of the meter. Panel mounted meters should be
installed in position prior to connection to process piping. General good
piping practice should be observed to prevent trapped fluid up or down stream
of the meters. Connectors/adapters on the meter are supplied with wrench flats
which must be held firmly when threading mating connections. Teflon tape
should be used on pipe thread connections. NOTE: Care must be taken to
avoid the shredding of Teflon tape which can foul meter operation.
2. Leak test final joints prior to operation. Leaks are often the cause of
misleading flow indication.
VII. OPERATION
1. START-UP CAUTION. Avoid sudden pressure surges. The impact of the
float at the top of the tube can damage the meter if it is exposed directly to full
line pressure. Avoid shock by closing the valve before start-up. Introduce
pressure by slowly opening the valve.
2. FLOW READING. Flow indication is read at the center of the ball floats.
Units of flow (SCCM, SCFH, etc.) are noted on the side of the tube. Tubes
with millimeter, percent of maximum flow or linear scales require a calibration
chart that corresponds to the metered fluid.

6
VIII. DISASSEMBLY AND REASSEMBLY
A. A 5/32” hex wrench fits the recessed seal screw located at one end of the meter.
Turn the hex wrench counterclockwise until the seal screw is flush with the
inside surface of the end fitting. NOTE: If the meter does not have a tube
enclosure then the tube must be held to prevent it from falling from the meter
frame.
B. Remove the Tube Cube from the frame by sliding it forward.
C. Remove the tube from the cube.
1. Remove the center seals form the Tube Cube and inspect for damage.
The flowmeter tube can be easily removed from the Tube Cube. NOTE:
NO FURTHER DISASSEMBLY SHOULD BE NECESSARY FOR
MAINTENANCE.
2. Clean tube assembly (see CLEANING PROCEDURE).
D. If complete disassembly is necessary, then continue as follows.
1. Remove the retaining ring from the compression plug jack screw. (Do
not over stretch the ring)
2. Push the jack screw and compression plug through the end fitting.
3. Complete the disassembly of the o- rings and parts.
4. Remove piping connectors/adapters.
5. Clean all parts (see CLEANING PROCEDURE).
6. Lubricate left hand thread on the jack screw and reassemble.
7. Examine the o-rings for damage, lubricate and reassemble.
8. Replace connector into seal fitting.
9. Replace compression plug assembly so that the milled flat is toward the
piping connector.
10. Replace retaining ring. NOTE: It is occasionally necessary to turn the
jack screw clockwise to lift the retaining ring groove sufficiently to insert
the retaining ring. Spread the retaining ring only enough to fit over the
jack screw.
11. Replace the Tube Cube into the frame until the rear of the Tube Cube is
flush with the rear surface of the end fittings and tab stops.
12. Tighten the compression plug. CAUTION: DO NOT OVER
TIGHTEN. See torque specifications listed below.
13. Check meter for leaks.
Torque Specifications for compression plug:
Seal Torque Min Max
Viton 18 in-lb 16 in-lb 20 in-lb
EPR 10 in-lb 8 in-lb 12 in-lb
Buna 16 in-lb 14 in-lb 18 in-lb
Teflon 24 in-lb 22 in-lb 26 in-lb

7
IX. CLEANING PROCEDURE
(Please notify the factory if cleaning for oxygen service is required)
A. TUBE AND FLOAT CLEANING
1. Remove the float stops. Take care to avoid chipping the inside edges of
the tube.
2. Flush the inside of the tube with solvent (without wax or inhibitors, i.e.
glycols). Isopropyl alcohol 90% is recommended. All parts should be
ultrasonically cleaned if possible.
3. Clean the inside of the tube with a pipe cleaner, flush with solvent (see
step A. 2.), and then blow dry.
4. Clean the float with a lint free cloth. Floats should always be handled
using clean tweezers with soft holding surfaces.
5. Clean and replace the inlet float stop. Be sure that it is firm in the tube.
6. Replace the float with tweezers.
7. Replace the outlet float stop.
8. Invert the tube as described under INSTALLATION #3.
9. If the float sticks in the tube then repeat the cleaning procedure.
10. Reassemble the Tube Cube in reverse to DISASSEMBLY &
REASSEMBLY step C. Note: position the scale behind the lens of the
Tube Cube.
B. METAL PARTS CLEANING
Ultrasonic immersion cleaning with Solvon PB is preferred; however, any
industrial solvent which does not attack the metal or influence the process
performance is acceptable.
C. O-RINGS AND SEALS CLEANING
1. Wash thoroughly with detergent and rinse with water.
2. Lubricate and reapply to metal parts. Halocarbon grease is
recommended.
X. VALVE REMOVAL AND INSTALLTION
1. Turn the valve handle clockwise so that the valve stem engages the orifice
(about 3 turns from full open).
2. Remove the valve cartridge from the flowmeter by using a 9/16” open end
wrench. The valve cartridge will screw completely out of the flowmeter body.
3. Take the replacement valve cartridge and screw it into the valve cartridge
cavity and then tighten with the 9/16” wrench.
Note: Be certain that the orifice and the orifice o-ring have been removed prior to
replacing the valve cartridge with another size.

8

9

10

11
The parts listed below are applicable to MATHESON FM-1000 and FM-1050 flowmeters.
Recommended spare parts are indicated by *.
#
Qty
Part Number
Description
ID
MARK
65 MM
TUBES
150 MM
TUBES
B
J000-J099
E100-E199
1
1
MAAT-0202-___
ADAPTOR, VALVE, 1/8" NPT**
J100-J199
E200-E299
2
1
MAAT-0201-___
ADAPTOR, SEAL, 1/8" NPT**
J200-J299
E300-E399
3
1
MAAT-0204-___
ADAPTOR, VALVE, 1/4" NPT**
J600-J649
E400-E499
4
1
MAAT-0203-___
ADAPTOR, SEAL, 1/4" NPT**
J700-J799
E500-E599
5
1
MATT-0202-___
ADAPTOR, VALVE, 1/4" TUBING**
E600-E699
6
1
MATT-0201-___
ADAPTOR, SEAL, 1/4" TUBING**
E910
7
1
MATT-0204-___
ADAPTOR, VALVE, 1/8" TUBING**
C
J400-J499
8
1
MATT-0203-___
ADAPTOR, SEAL, 1/8" TUBING**
J800-J899
9
1
MAHA-0202-___
ADAPTOR, VALVE, HOSE**
●●
J500-J599
E800-E899
10
1
MAHA-0201-___
ADAPTOR, SEAL, HOSE**
●
E700-E799
11
1
MPLU-0101-___
PLUG, VALVE WITH O-RING
12*
1
MRNS-0905-SD
RING, RETAINING
13*
1
MRNS-0009-___
O-RING
14*
2
MRNS-0011-___
O-RING
15*
1
MRNS-0013-___
O-RING
16*
2
MPAC-0011-___
SEAL, CENTERING, ID MARK B
2
MPAC-0012-___
SEAL, CENTERING, ID MARK C
2
MPAC-0013-___
SEAL, CENTERING, ID MARK ●●
2
MPAC-0014-___
SEAL, CENTERING, ID MARK ●
17*
1
MHCJ-0XXX-XX
TUBE CUBE ASSY, 65MM***
1
MHCE-0XXX-XX
TUBE CUBE ASSY, 150MM***
___= MATERIAL CODES AA=ALUMINUM BA=BRASS SA=316 SS BU=BUNA N
VA=VITON EB=EPR
**Includes PAL nut and o-ring
***Specify Flow Rate Required

166 Keystone Drive
Montgomeryville, PA 18936
800-828-4313
www.mathesongas.com
INT-0131 rev C
Copyright 2019 Matheson Tri-Gas, Inc. All Rights Reserved.
All contents of this document are subject to change without notice and do not represent a commitment on the part of Matheson Tri-
Gas, Inc. Every effort is made to ensure the accuracy of this information. However, due to differences in actual and ongoing
operational processes and product improvements and revisions, Matheson Tri-Gas, Inc. cannot guarantee the accuracy of this material,
nor can it accept responsibility for errors or omissions. This document is intended to serve as a general orientation and cannot be relied
upon for a specific operation. No warranties of any nature are extended by the information contained in these copyrighted materials.
All names, products, and services mentioned herein are the trademarks or registered trademarks of their respective organizations and
are the sole property of their respective owners. Matheson and the Matheson logo are registered trademarks of Matheson Tri-Gas, Inc.
TERMS AND CONDITIONS OF SALE
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