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Hoffer Flow Controls MF SERIES User Manual

Mini-flowmeters for low flow applications
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MF SERIES
Mini-Flowmeters
for Low Flow Applications
USER'S MANUAL
HP-210
January 2010
HP-210
January 2013
107 Kitty Hawk Lane
P.O. Box 2145
Elizabeth City, NC 27909
●
●
1-800-628-4584
(252) 331-1997
Fax (252) 331-2886
●
●
www.hofferflow.com
email: info@hofferflow.com
HFC 9907-A

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  • Page 1 MF SERIES Mini-Flowmeters for Low Flow Applications USER’S MANUAL HP-210 January 2010 HP-210 January 2013 107 Kitty Hawk Lane P.O. Box 2145 Elizabeth City, NC 27909 ● ● 1-800-628-4584 (252) 331-1997 Fax (252) 331-2886 ● ● www.hofferflow.com email: info@hofferflow.com HFC 9907-A...
  • Page 3 NOTICE Hoffer Flow Controls, Inc. makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. This manual has been provided as an aid in installing, connecting, calibrating, operating, and servicing this unit.
  • Page 4 LIMITED WARRANTY POLICY FOR HOFFER FLOW CONTROLS HOFFER FLOW CONTROLS, INC. ("HFC") warrants HFC's Precision Series, API Series and CT Series of turbine flowmeters to be free from defects in material and workmanship under normal use and service, only if such goods have been properly selected for the service intended, properly installed and properly operated and maintained as described in the turbine flowmeter manual.

  • Page 5: Table Of Contents

    CONTENTS Introduction..................1 Model Number Designation........... 2 Specification ................7 Operation ..................9 Principle................. 9 Precautions................9 Installation ................... 11 General Piping ..............11 Strainers/Filters..............12 Installation Kits..............12 Maintenance................. 13 General................. 13 Disassembly ................. 13 Inspection & Repair ............. 13 Assembly ................
  • Page 6 HP-210...

  • Page 7: Introduction

    We are proud that you have selected a Hoffer Turbine Mini- Flowmeter, the finest precision flow transducer on the market. The Hoffer MF Series of Mini-Flowmeters are designed to meet the need for a high quality low flow measurement device for service in low to moderate viscosity clean liquids and for gas applications.

  • Page 8: Model Number Designation

    Introduction Model Number Designation The model number of the meter describes various fittings and options. MINI-FLOWMETER SERIES FOR LIQUID MODEL MF1/2X( )- ( )-(MS)-( PROCESS CONNECTION/END FITTING SIZE FLOWMETER SIZE MINIMUM FLOW RATE IN GPM MAXIMUM FLOW RATE IN GPM BEARING TYPE PICKUP COILS RISER AND EXPLOSION PROOF COIL ENCLOSURES...
  • Page 9 Introduction BEARING TYPE MODEL MF1/2X( ( D ) TURBINE SIZES OPTION MF1/2X20B (PB) CERAMIC HYBRID BALL BEARING, SELF LUBRICATING HARD CARBON COMPOSITE SLEEVE BEARING TUNGSTEN CARBIDE SLEEVE BEARING MF1/2X30B (BP) CERAMIC HYBRID BALL BEARING, SELF LUBRICATING HARD CARBON COMPOSITE SLEEVE BEARING TUNGSTEN CARBIDE SLEEVE BEARING MF1/2X40B (BP)
  • Page 10 Introduction RISER AND EXPLOSION PROOF COIL ENCLOSURES MODEL MF1/2X( ( F ) OPTION 1" MNPT RISER, WELDED TO BODY (X-ATEX) 3/4" MNPT RISER, WELDED TO BODY (XE2) 1" MNPT RISER WITH E2 ENCLOSURE* INCLUDES STOCK #300-8375 1"X3/4" ADAPTER (X-ATEX)E2 3/4" MNPT RISER WITH E2 ENCLOSURE* (X8S) 8"...
  • Page 11 Introduction MINI-FLOWMETER SERIES FOR GAS MODEL MF1/2X(A)-(G)-(B)-(C/D)-(MS)-(PT)-(E) PROCESS CONNECTION/END FITTING SIZE FLOWMETER SIZE MAXIMUM FLOW RATE IN ACFM BEARING TYPE PICKUP COILS RISER AND EXPLOSION PROOF COIL ENCLOSURES END FITTING TYPE 1/4" PRESSURE TAP @ ROTOR SPECIAL FEATURES PROCESS CONNECTION ALL MINI-FLOWMETERS ARE 1/2", 37 DEG.
  • Page 12 Introduction PICKUP COILS MODEL MF1/2X( ( C ) OPTION (1M) ONE MAG COIL (1MC3PA) ONE RF COIL (1MC2PAHT) ONE HIGH TEMP RF COIL (1ISM) ONE INTRINSICALLY SAFE MAG COIL, NORTH AMERICA (1ISM-ATEX) ONE ISM ATEX COIL (1RPRXXX) ONE REDI-PULSE RF COIL (1DRXXXX) ONE REDI-PULSE INTRINSICALLY SAFE RF COIL (-ATEX)*...

  • Page 13: Specification

    Introduction PROCESS CONNECTION/END FITTING TYPE MODEL MF1/2X( )-(MS)-( OPTION (MS) ALL MINI-FLOWMETERS ARE 1/2", 37 DEG. MALE FLARE PER MS33656 (1/4-TS) 1/4" TUBE STUB (1/2-TS) 1/2" TUBE STUB PRESSURE TAP @ ROTOR MODEL MF1/2X( )-(PT)-( OPTION (PT) 1/4" PRESSURE TAP @ ROTOR SPECIAL FEATURES MODEL MF1/2X( ( E )
  • Page 14 Introduction This page intentionally left blank. HP-210...

  • Page 15: Operation

    Operation 2 Operation Principle The Hoffer MF Series has been developed to meet the need for a low flow measurement device for use with low to moderate viscosity clean liquids and for gas measurement applications. The MF Series is a family of low flow rate measurement devices whose design is based on a Pelton Wheel-like rotor.
  • Page 16 Operation This page intentionally left blank. HP-210...

  • Page 17: Installation

    General Piping The MF Series Flowmeters are capable of sensing fluid flow in one direction only. The meter housing is marked by a flow direction arrow to indicate the direction of flow through the meter. The meter must be installed in the piping in the correct orientation to ensure the most accurate and reliable operation.

  • Page 18: Strainers/Filters

    Strainers/Filters The MF Series flowmeters are designed for use in a clean fluid service. However, the service fluid may carry some particulate material which would need to be removed before reaching the flowmeter.

  • Page 19: Maintenance

    Maintenance 4 Maintenance General Preventive maintenance for the MF Series mini-flowmeter consists of a thorough general inspection. Remove the meter from the service line and take to a clean work area. Use the following procedures and exploded component views to remove, inspect, and reinsert the flowmeter internals.
  • Page 20 14 Maintenance Exploded View: BB - Ball Bearing Models Pickup Coil Rotor Threaded Plug Shaft Assembly Seal Ball Bearing Ball Bearing Coil Locknut Housing Exploded View: C – Hard Carbon Bearing Models Pickup Coil Rotor Threaded Plug Shaft Assembly Seal Coil Locknut Housing Exploded View:...

  • Page 21: Assembly

    Maintenance Assembly 1. Install any new parts. 2. Guide the rotor and bearing assembly onto the shaft. Make sure the rotor is installed with the cup side of the Pelton wheel facing the “IN” side of the housing. 3. Place a new gasket on the insert. Always use a new gasket. 4.
  • Page 22 Maintenance If either resistance measurement fails, replace the pickup coil. Firmly seat the new coil in the flowmeter and tighten the locking nut. HP-210...

  • Page 23: Trouble Shooting

    Maintenance Trouble Shooting Refer to the following troubleshooting guide for assistance with possible meter malfunctions: TROUBLE CAUSE REMEDY  Fluid will not flow Meter clogged. Clear meter.  through the meter Line to meter Clear line to meter. blocked.  Reduced flow through Meter partially Clear meter.

  • Page 24: Spare Parts

    Maintenance Spare Parts The following table contains the suggested spare parts for the Hoffer MF Series flowmeters: Item No. Part No. Part Description 300-#### Pickup Coil 300-#### Seal/Gasket 300-#### Rotor Assembly 300-#### Bearings 300-#### Shaft Assembly Specific meter parts are dependent upon the meter size and model, always have the complete meter model number or serial number available when consulting the factory.

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