LMX Flow Meters

LMX Pelton WheelLMX Pelton Wheel
PW LMX 004
PW LMX 001
PW LMX 005
PW LMX 003
LMX Pelton WheelLMX Pelton Wheel

Information about the LM Pelton Wheel meter

Also known as a radial turbine the highly efficient Pelton Wheel meter has some major advantages. The very large blade area compared with the flow inlet port size produces an exceptionally wide range flowmeter which can measure very low flows. The flow through the inlet of the meter is accurately directed onto the rotor which rotates at a speed in linear proportion to the flow rate. A small sensing coil detects the ferrites mounted in the rotor blade tips as they pass. No drag is imposed on the rotor which assists in the measurement of extremely low flows. Sapphire bearings provide a very low friction mechanically-robust bearing with long life characteristics. Turndown can be as high as 280:1.

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Each size pelton wheel flowmeter has its flow rate range controlled by jet size. For example, the LM24 has a 2.4mm diameter jet and a flow range of 0.03 to 4.3 litres per minute.

Typical Applications

CanningFuelBatch ControlAerospace
AgriculturalChemicalsMixingMilitary
Low viscosityFilm ProcessingGlassTextile
Low FlowSprayingAutomotiveRubber & Plastic
  • TECHNICAL
  • FLOW RATE
  • CONNECTION
  • MATERIAL
  • DISPLAY
  • DOWNLOADS
  • ENQUIRE NOW

Key Features

CompactSingle Moving PartWide Flow Range, up to 280:1
Very Low Flow MeasurementProven since 1975Low Maintenance
Tolerant of particulate up to 100+ microns35,000 installedHighly Durable
Low pressure drop (<0.5 bar typical) Preserves Molecular Integrity of fluid

Technical Specifications LMX range

Flow ranges

LM0030-0.060 l/minMore detail in FLOW RATE tab
LM0050-0.100 l/minMore detail in FLOW RATE tab
LM010-0.25 l/minMore detail in FLOW RATE tab
LM050-1.3 l/minMore detail in FLOW RATE tab
LM240-4.3 l/minMore detail in FLOW RATE tab
LM450-6.3 l/minMore detail in FLOW RATE tab
LM480-8 l/minMore detail in FLOW RATE tab
LM900-15 l/minMore detail in FLOW RATE tab
LM2200-28 l/minMore detail in FLOW RATE tab
LMX.12.50-65 l/minMore detail in FLOW RATE tab
Accuracy±2% of reading over top 90% of rangeMore detail in FLOW RATE tab
Repeatability±0.2% reading over top 90% of range 
Pressure Ratings5 to 230 bar depending on materialMore detail in CONNECTION tab
Temperature rating-40°C - +100°C & 135°C dependent on material and pressure 
Viscosity Range0.5 to 10cPMore detail in FLOW RATE tab
Recommended FiltrationA 100 micron filter is advisable for 100% long life serviceability.
DimensionsRefer to drawingsLink in DOWNLOADS tab

Flow Ranges

All LM flowmeters are custom calibrated across the customer specified minimum to maximum flow conditions on water. The minimum flow rates achievable are dependent on fluid viscosity; the flow minima below are for water.

Flow Ranges

  Pressure Drop
LMXS.003 or LMX.003*0.004 to 0.060 l/min0.18 bar @ 0.03 l/min; 0.7 bar @ 0.06 l/min
LMXS.005 or LMX.0050.006 to 0.100 l/min0.18 bar @ 0.05 l/min; 0.7 bar @ 0.10 l/min
LMX.010.01 to 0.25 l/min0.33 bar @ 0.125 l/min; 1.3 bar @ 0.25 l/min
LMX.050.02 to 1.3 l/min0.18 bar @ 0.65 l/min; 0.74 bar @ 1.3 l/min
LMX.240.03 to 4.3 l/min0.30 bar @ 2 l/min: 1.2 bar @ 4.3 l/min
LMX.450.04 to 6.3 l/min0.23 bar @ 3 l/min: 1.3 bar @ 6.3 l/min
LMX.480.06 to 8 l/min0.30 bar @ 4 l/min: 1.2 bar @ 8 l/min
LMX.900.08 to 15 l/min0.25 bar @ 9 l/min: 0.7 bar @ 15 l/min
LMX.2200.1 to 28 l/min0.24 bar @ 10 l/min: 1.8 bar @ 28 l/min
LMX.12.51 to 65 l/min0.20 bar @ 32l/min: 0.9 bar @ 65 l/min

Accuracy ±2% of actual reading for the top 90% of range. -0.5% FSD for the bottom 10% of range.
Repeatability ±0.2% reading over top 90% of range
*Linearisation required for LM003 and LM005

Viscosity effects - The minimum flow rate will increase when the viscosity of the fluid exceeds 3 to 5 cP. Contact the factory for further details.

Standard Connections

Connection Type

LMXS.003 and 005 LMXS: 8mm OD tube for optional Swagelok fittings to ¼” NPT, ¼” BSP.
LMX1/2” BSP or NPT male (Specify at time of order)
LMXPVC & LMXPVC3½” Plain Pipe ends for solvent welding
PVC3 VTC or WT1″ANSI150 or PN16
LMX 345bar1/4” NPT
LMX 690barAE MP

Pressure Rating

 

  
LMXS.003 & 00530bar
LMX.100bar, 230, 345 & 690bar option
LMXPVC & LMXPVC35bar
PVC3 VTC or WT16bar
  

Temperature Rating

 

 

-40°C for stainless bodies and 0°C for plastic

 

Custom: Call for further options

  
LMXS.003 & 005100°C, 135°C option
LMX.100°C, 135°C option
LMXPVC & LMXPVC340°C
PVC3 VTC or WT40°C
  

Materials Body

CodeMaterial
LMX and LMXS316 Stainless Steel (UNS S31603)
LMXPVCPVC
LMXPVC3 and PVC3PVC

Materials Sensor

CodeMaterial
LMX and LMXS316 Stainless Steel (UNS S31603)
LMXPVC316 Stainless Steel (UNS S31603)
LMXPVC3 and PVC3PVC wetted face

Materials Rotor Assembly

CodeMaterial
LMX and LMXSPFA, 316SS and sapphire
LMXPVCPFA, 316SS and sapphire
LMXPVC3 and PVC3PFA and sapphire

Materials Seals

CodeMaterial
LMXPTFE gasket
LMXSViton O ring as standard
LMXPVCViton O ring as standard
LMXPVC3 and PVC3Viton O ring as standard
LMX 230 and 345barViton O ring as standard
LMX 690barInconel

Call for further options

Code for O ring optionsMaterial
VViton
NNitrile
PPTFE Encapsulated Viton  
EEPDM
NAEDNitrile non explosive NBR
KKalrez
CHChemraz

Call for further options

Display for Pelton Wheel meters

Fluidwell

  • Flow Rate
  • Material: GRP or Aluminium
  • IP 67
  • Ambient temperature: ‐40 to +70°C
  • Selectable units
  • Resettable and non‐resettable Totaliser
  • Batch control option
  • Power: 12 – 30 Vdc, Battery or Mains powered

VTC

  • LCD display
  • 430SS and powder coated aluminium
  • Passive 4-20mA output
  • Scalable Frequency Output
  • 9 points of linearisation, pre-programmed
  • Easy setup via Windows program
  • 15 to 30 Vdc input.
  • IP65
  • Intrinsically Safe ATEX II 2G Ex ia IIC T4 Gb or USB option
  • Ambient temperature: ‐20 to +70°C
  • Media Temperature: ‐40 to +120°C

WT sensor

  • Stainless steel
  • Passive 4-20mA output
  • Scalable Frequency Output
  • 9 points of linearisation, pre-programmed
  • Easy setup via Windows program
  • 12 to 30 Vdc input.
  • IP65
  • Intrinsically Safe option II 2G Ex ia IIC T4
  • Ambient temperature: ‐40 to +70°C
  • Media Temperature: ‐40 to +120°C

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