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FMG210
User Manual
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Omega FMG210, FGM220, FMG230 User Manual

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FMG210/220/230 SERIES
Low Flow Magnetic Flow Meter
GENERAL INFORMATION
The FMG210/220/230 Series are small electromagnetic low-flow flowmeters with chemically-resistant plastic wet­ted parts and a choice of Hastelloy or platinum electrodes suitable for use with a variety of chemicals. Capable of measuring pulsating flows from diaphragm-type metering pumps, they are designed primarily for electrically-conduc­tive chemical injection applications. The 1/4”, 3/8”, and 1/2” sizes monitor maximum flows of 1, 3, and 8 gallons per minute (or 4, 11, and 30 L/min), respectively. Barb or
FEATURES
6 ft. control cable
Strain relief
Rugged ABS plastic body
Male NPT or barb pipe ttings,
PVDF plastic
NPT fittings are available.
The FMG210/220/230 Series are 12-24 Vdc powered and come with standard pulse and analog outputs. All electron­ics are self-contained in a single compact chemically-resis­tant housing, well suited for OEM applications.
These meters are also appropriate for remote monitoring of chemical volume or rate using a computer or a PLC.
SPECIFICATIONS
Materials Body
Electrodes
O-Ring
Fittings
Power
Accuracy
Max Fluid Temperature
Maximum Pressure
Minimum Conductivity
Outputs
ABS plastic
Platinum or Hastelloy
Viton™ (EPDM optional)
PVDF plastic
12-24 Vdc, 180 mA
+/-1% of reading, plus .005 gpm (0.02 lpm)
185˚ F (85˚ C)
150 psi (@ 75˚ F)
20 microSiemens
• Frequency opto isolated 1000 pulse/liter (3785 p/g)
• 4-20 mA opto isolated passive
FLOW RANGE
SIZE LOW FLOW CUTOFF MINIMUM FLOW for spec accuracy MAXIMUM FLOW
L/MIN GAL/MIN GAL/HR L/MIN GAL/MIN GAL/HR L/MIN GAL/MIN GAL/HR
-025
.04 .01 .60 .26 .07 4.2 3.8 1 60
-038
.11 .03 1.80 .76 0.2 12 11 3 180
-050
.26 .07 4.20 1.9 0.5 30 30 8 480
INSTALLATION, CONNECTIONS, and OPERATION
INSTALLATION
Mounting. The FMG210/220/230 can be supported by
its piping connections if the piping is rigid and there is no vibration. Alternatively, the grounding studs can be used for mounting by inserting them through pre-drilled holes. Note the centerline distance in the dimensional drawing on following page.
CAUTION: Although this meter has an
empty pipe detection function, under certain conditions of empty or partially-full pipe the meter may read
a flow when there is none. If this is a hazardous condition, mount the meter in such a way as to ensure the meter will always be full of liquid.
Piping. Metallic pipe or tube, or plastic tubing, can be used with the meter. The meter comes with male NPT or barb fittings (see chart, next page, for sizes).
For plastic tubing, use female NPT tubing adaptors. In installations exposed to vibration, it is not recommended to use the piping as the sole suppor t for the meter, par ticularly on the smaller sizes.
CONNECTIONS
Power and signal connections are provided by the single 4- or 6-conductor color-coded cable. See the Wiring Connections chart on next page. In addition, it is necessary for proper operation to ground the unit to a good quality earth ground. Use the 12 ft. grounding wire supplied with the unit, or if necessar y, a longer wire attached to one or both of the grounding studs. If metal piping is used, ground connections from the grounding studs on the bottom of the unit to both inlet and outlet pipes provide the best results in metering accuracy. See Grounding diagrams.
OPERATION
The newly-installed meter takes from a few seconds to a minute for the signal to stabilize at star tup, especially if it has been dry. In normal operation, keep the meter filled with fluid to prevent this delay. An empty pipe detection feature will normally detect absence of liquid in the pipe and register zero flow when the meter is mounted properly.
The 4-20 mA signal outputs 4 mA at zero flow and 20 mA at maximum rated flow. The standard pulse signal is a 50% duty cycle pulse set at 1000 pulses/liter (3785 pulses/gallon).
A minimum of 1” of straight pipe run is recommended on the inlet side of the meter. Straight run is not necessary on the outlet.
L
.60
#10-24 STUDS (2), 316 SS STAINLESS
3.75
2.00
BARB or MALE NPT PIPE FITTING, PVDF PLASTIC
.83
.62
5.70
2.48
2.000
6 FT. LONG CONTROL CABLE, 6 CONDUCTOR
12 FT. LONG GROUNDING WIRE WITH LUGS (SUPPLIED)
2 EACH #10 LOCKWASHERS (316 SS) & #10-24 HEX NUTS, (316 SS) SUPPLIED
ABS
HOUSING
INSTALLATION, CONNECTIONS and GROUNDING
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DIMENSIONS
IDEAL GROUNDING WITH METALLIC PIPING
CONNECTIONS
RED + 12 to 24 Vdc Power BLACK - Power
GREEN + Pulse Output Isolated WHITE - Pulse Output Isolated
ORANGE + 4-20 mA Isolated BLUE - 4-20 mA Isolated
To Earth Ground
STANDARD GROUNDING
To Earth Ground
TROUBLESHOOTING
Problem
Analog output at 0 mA
Analog output is 4 mA
with ow
No pulse output
Flow rate incorrect
Probable Causes Try...
No loop power
Unit not grounded
Flow reversed
Reversed output connections
Not grounded
Reversed ow
Missing or incorrect ground wire
Fluid conductivity <20 microSiemens/cm
Empty pipe
4-20 mA loop needs an external power
supply - if missing, add it
Connect to earth ground
Note ow direction arrow, reverse direction
to match
Change output connection
Connect to earth ground
Change ow direction
Check for proper grounding
Select another ow meter
Install meter in vertical position
WARRANTY/DISCLAIMER
OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months f rom date of purchase. OMEGA’s WARRANTY adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping time. This ensures that OMEGA’s customers receive maximum coverage on each product.
If the unit malfunctions, it must be re t u rned to the factory for evaluation. O M E G A’s Customer Serv i c e D e p a rtment will issue an Authorized Return (AR) number immediately upon phone or written re q u e s t . Upon examination by OMEGA, if the unit is found to be defective, it will be re p a i red or replaced at no c h a rge. O M E G A’s WARRANTY does not apply to defects resulting from any action of the purc h a s e r, including but not limited to mishandling, improper interfacing, operation outside of design limits, i m p roper re p a i r, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of having been damaged as a result of excessive corro s i o n ; or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating conditions outside of OMEGA’s c o n t rol. Components in which wear is not warranted, include but are not limited to contact points, fuses, and triacs.
OMEGA is pl eased to offer suggestions on the use of its various p roducts. However, OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with information provided by OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by the company will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR R E P R E S E N TATIONS OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTA B I L I T Y AND FITNESS FOR A PA RTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF L I A B I L I T Y: The remedies of purchaser set forth herein are exclusive, and the total liability of OMEGA with respect to this ord e r, whether based on contract, warr a n t y, negligence, indemnification, strict liability or otherwise, shall not exceed the purchase price of the compone nt upon wh ich l iability i s bas ed. I n no event shal l OMEGA be li able for consequential, incidental or special damages.
CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical applications or used on humans. Should any Product(s) be used in or with any nuclear installation or a c t i v i t y, medical application, used on humans, or misused in any way, OMEGA assumes no re s p o n s i b i l i t y as set forth in our basic WA R R A N TY/ D ISCLAIMER language, and, additionally, purchaser will indemnify OMEGA and hold OMEGA h a rmless from any liability or damage whatsoever arising out of the use of the P roduct(s) in such a manner.
RETURN REQUESTS/INQUIRIES
Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR ) N U MBER F R OM OMEG A’S CUSTO MER SERVIC E D E PA RT M E NT (IN OR DER TO AV O I D PROCESSING DELAYS). The assigned AR number should then be marked on the outside of the return package and on any correspondence.
The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent breakage in transit.
FOR WARRANTY RETURNS, please have the following information available BEFORE contacting OMEGA:
1 . P u rchase Order number under which the pro d u c t
was PURCHASED,
2. Model and serial number of the product under warranty, and
3. Repair instructions and/or specific problems relative to the product.
FOR NON-WARRANTY REPAIRS,
consult OMEGA for current repair charges. Have the following information available BEFORE contacting OMEGA:
1. Purchase Order number to cover the COST
of the repair,
2. Model and serial number of the product, and
3. Repair instructions and/or specific problems
relative to the product.
OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords our customers the latest in technology and engineering.
OMEGA is a registered trademark of OMEGA ENGINEERING, INC. © Copyright 2005 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied,
reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the prior written consent of OMEGA ENGINEERING, INC.
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