Positive Displacement Flowmeters Operational Manual For Models Model 241, 242, 243 240 Helical Series Positive Displacement Flow Meters Max Machinery, Inc. 240 Series User Manual © Copyright 2013 Rev.
Table of Contents Before You Install....................................................................page 3 Meter General Description....................................................page 4 Transmitter General Description ....................................... page 5 Meter Specifications...............................................................page 6 Transmitter Specifications Analog........................................................................................
Before You Install Thank you for choosing to install a Max Machinery precision flow meter. To ensure the best experience please take a moment to read through this manual prior to installation. When you purchased this meter a flow engineer helped determine many of the factors that will be reviewed on the following pages. You may find it useful to fill out the form below and keep it in your files for reference.
Meter General Description The Max 240 Series Flow Meters are positive displacement helical rotor type units capable of precise measurements over a wide range of flow rates and fluid viscosities. inlet outlet The three sizes of this series (241, 242, and 243) will measure flows from 0.1 L/min to 1400 L/min. Material viscosities between 3 and 1,000,000 centipoise may be accommodated. In a helical rotor type flow meter, a precise amount of the fluid being measured is trapped between the rotors as they turn.
Transmitter General Description Max transmitters are designed to work with the entire family of Max Flow Meters to provide extremely precise flow measurement in a cost effective package. Different options of industrial housings or IP66 rated explosion proof enclosures, combined with a choice of one-part and two-part, high temperature designs with remote electronics cover a wide range of application environments – from the laboratory to harsh industrial processes.
Meter Specifications Model 1 Maximum flow rate, Gal/min Liters/min Maximum pressure, bar (psi) Standard NPT 600 lb ANSI RF flanges 1500 lb ANSI RF flanges 2500 lb ANSI RF flanges Pressure drop, bar (PSI) Operating maximum Absolute maximum 100% flow, 3 CPS 2 Maximum temperature 3 Recommended filtration Displacement, L/Rev Weight, Kg (Lb) 4 Typical K-Factor, (pulses/liter) 295 Transmitter 289-700 Transmitter Port size NPT ANSI RF flanges 241 242 243 50 189 140 540 370 1400 35, (500) 105 (150
Transmitter Specifications Analog Supply Voltage 12 Vdc 24 Vdc (Models 29X-XXX-100) (Models 29X-XXX-000) Supply Current 90 mA max@ 12 Vdc, 45 mA max@ 24 Vdc Short Circuit Current 21 mA 1 Output Update Rate 1 ms Adjustable without recalibration to any range of ± 10 Vdc Model 29X-3XX-XXX or ± 20 mA Model 29X-2XX-XXX Resolution Ambient Temperature Range Transmitter (Storage)–40ºC to 85ºC (–40ºF to 185ºF) Transmitter (Operation)–40ºC to 80ºC (–40ºF to 175ºF) 2 Maximum Temperature, Process
Transmitter Specifications Frequency (Pulse) Supply Voltage Supply Current 5-26 Vdc 25-30 mA typical Output (5.0 Volt Supply) (TTL and CMOS compatible) No Load 2.5K Load to Common 2.5K Load to +5 Volts 0.00 / 4.80 Volts 0.00 / 4.60 Volts 0.25 / 4.80 Volts Short Circuit Current 45 mA Output Impedance 100 Ω Rise/Fall Time 1 Output Update Rate 0.
Do and Don’ts DO: Install bypass plumbing around the flow meter. This is useful during start up for removing dirt and air from the plumbing or when measuring fluid that may freeze inside the line and need to be remelted before it can pass through the meter. It also allows removing the flow meter for service without disabling the system. DO: Be very careful to keep parts clean during installation or teardown.
Installation For optimum performance, install the flow meter on the discharge side of the pump, in one of the configurations shown on page 11. The following items and conditions should be considered: Location: Install the flow meter in a clean, dry area if possible. Avoid areas with high vibration levels. Line and Bypass Valves: These valves allow filter cleaning or flow meter removal without completely shutting the system down and draining the lines.
Piping Diagrams Vertical Installation Horizonal One Way Flow Installation Flow VALVE 2 Valve 1 Filter Valve 2 Helical Flow Meter HELICAL FLOW METER Bypass Valve 3 BYPASS VALVE 3 Horizonal Two Way Flow Installation Flow FILTER Valve 1 Filter Filter Valve 2 Helical Flow Meter VALVE 1 Bypass FLOW Max Machinery, Inc. 240 Series User Manual Valve 3 © Copyright 2013 Rev.
ANSI Flange Stud Torque 240 Series ANSI Flange Stud Torque Requirements. This table shows the minimum torque required for a 2:1 tightening factor at the indicated pressures using zinc plated studs and nuts. These values were calculated using studs with a yield strength of Sy = 75,000 psi.
Operation Determine that the following parameters of your flow metering system are within specifications for the specific 240 Series Meter being used: Maximum System Pressure (Specifications) Differential Pressure across meter (Pressure Drop Curves) Maximum Flow Rate (Pressure Drop Curves) Metered Fluid Temperature (Sales specification, transmitter manual) If the metered fluid is greater than 80°F (28°C) over ambient, see the “High Temperature Start Up” section.
Electrical Installation - Wiring 290 Series Transmitters Removal note: The transmitter does not need to be removed from the flow meter for any field servicing or adjustments. Normally, the flow meter and transmitter are shipped back to the factory for calibration or service as a unit. If the transmitter needs to be removed from the flow meter for installation, be sure to retighten the transmitter snugly in order to ensure proper sensor alignment. Mechanical Installation 1.
Electrical Installation - Wiring Wiring FREQUENCY The electrical connector versions are pre-wired inside the transmitter and ready to accept a mating cable (available from the factory).
Troubleshooting Trouble Corrective Action No Flow through meter or high pressure drop across meter Solidified material blocking rotation Heat meter to melt material. Debris blocking rotation Remove meter from line. Flush with an organic solvent or petrochemical. Try to work debris out of the meter. Meter broken If you find damaged parts in the meter, return the meter to the factory for repair.
241 Helical Flow Meter CONNECTIVITY/DIMENSIONS 9.55" 1.5" NPT (243 mm) 5.44" 2.81” 3.88"* (138 mm) (71 mm) (98 mm) *Add 0.4" (10mm) for high pressure body - Top -TopView View- - - End View view - TYPICAL PRESSURE DROP (Delta P versus Flow rate for various viscosities) Pressure Drop (psi) 140 120 Expected Failure Area Intermittent Duty Area —8 bar 100 80 60 —6 bar Continuous Duty Area —4 bar P 0c 00 10, 40 20 0 —2 bar 0.
242 Helical Flow Meter CONNECTIVITY/DIMENSIONS 2.5” NPT 10.85” (276 mm) 5.18”* 4.10” (132 mm) (104 mm) *Add 1.
243 Helical Flow Meter CONNECTIVITY/DIMENSIONS 3.00” NPT 13.10” (333 mm) 7.53” 6.
Contact for Repairs & Calibration Services Your Max 240 Series Meter should be repaired at the factory or under the direct supervision of the Max Technical Service Department. Unauthorized repair work may damage the meter and will void the product warranty. Please make note of model and serial numbers on the flow meter before calling the factory. A return goods authorization number (RMA) will be issued if the flow meter has to be sent back for repair. Max Machinery, Inc.
