Liquid Control M and MA Series rotary motion positive displacement (PD) meters offer the ultimate in measurement accuracy for custody transfer of petroleum products, aviation fuels, LPG and a broad range of industrial liquids. LC meters incorporate a unique design, presenting minimal intrusion in a flowing stream of liquid, as well as minimal pressure drop through the meter.
The LC meter consist of a housing in which three synchronized rotors turn with no metal-to-metal contact. Hydraulic sealing is accomplished by a stationary boundary layer of liquid, not by the wiping action of mechanical parts.
Performances features :
- Low pressure drop-will operate on gravity flow or pump pressure
- Sustained accuracy-no wear from metal-to-metal contact inside the measuring chamber means minimal deterioration in accuracy over time, fewer recalibration and longer service life. Meters conform to NIST and International Weight and Measures accuracy requirements
- Wide temperature range-product can be metered accurately from -40°F (-40°C) to 160°F (71°C)
- Wide viscosity range- LC meters can accurately meter products from less than 30 SSU (les than 1 centipoise) to 1.500.000 SSU (325.000 centipoise)
- Maximum adaptability-right angle design with choice of stock or custom elbows/ fittings provides unequaled mounting flexibility to meet installation requirements
Performance Specifications
Liquid Controls positive displacement meters are engineered to provide accurate performance and along trouble free service life requiring minimal maintenance with few replacement parts. The unique cast-case constructionn of the M and MA Series meters results in low pressure drop for most liquids, delivering superior performance and minimal demand on systems pumps. The exclusive LC metering element eliminates inccuracies due to clearance changes, minimizes loads on bearings, eliminates axial thrust and performs with equal accuracy for forward or reverse flow. M and MA Series meters compact design and multiple inlet/ outlet flange configurations provide unmatched mounting versatility.
Accuracy/ Performance :
Repeatability
Capable of 0.02% or better at any flow rate entire range
Linearity :
- Over 5 : 1 range
Mech. registration : capable of ±0.125% or better from max. nom. flow rate
Elect. registration : capable of ±0.10% or better from max. nom. flow rate - Over 10 : 1 range
Mech. registration : capable of ±0.22% or better from max. nom. flow rate
Elect. registration : capable of ±0.10% or better from max. nom. flow rate - Over 40 : 1 range
Mech. registration : capable of ±0.5% or better from max. nom. flow rate - Elect. registration : capable of ±0.15% or better from max. nom. flow rate
Temperature range :
-40°F to 160°F (-40°C to 71°C)
Relationship of meter pressure drop to flow rate and viscosity
With Liquids Controls unique design, the bearing surfaces of the meter element are internally and externally subjected to the same system pressure. Due to the low pressure drop inherent to the LC meter, it is often posibble to satisfactorily meter higher viscosity product through a smaller LC meter than is competitive equivalent. Pressure drop through a meter depents on product temperature, viscosity and flow rate. When metering a liquid, the pressure drop will increase as viscosity increases. Illustrated below is the pressure loss vs flow rate curve for an M-60 meter at 600 GPM on safety solvent. (for additional pressure loss data, consult factory)
Specification :
| Fitting Size | 3 Inch |
| Max. Nominal Flow Rate | 300 GPM |
| Max. Nominal Flow Rate | 1134 LPM |
| Max. Nominal Flow Rate | 68 M3/H |
| Max. Pressure | 150 PSI |
| Max. Pressure | 10.3 Bar |
| Max. Pressure | 1034 kPA |