Liquid Controls 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 wel 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 mechanicall parts.
Performance 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 product from less than 30 SSU (less than 1 centipoise) to 1.500.000 SSU (325.00 centipoise)
- Maximum adaptability-right angle design with choice of stock or custom elbows/ fittings provides unequaled mounting flexibility to meet your installation requirements
Performance Specifications
Liquid Controls positive displacement meters are engineered to provide accurate performance and a long, troublefree service life requiring minimal mintenance with few replacement prts. The unique cast-case construction 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 inaccuracies due to clearance changes, minimizes loads on bearings, eliminates axial thrust and performs with equa accuracy for forward or reverse low. M and MA Series meters compact design and multiple inlet/ outlet flange configurations provide unmacthed mounting versatility.
Accuracy/ Performance :
Repeatability
Capable of 0.02% or better at any flow rate over entire range
Linearity
- Over 5 : 1 range
Mech. registration : capable of ±0.125% or better from nom. flow rate
Elect. registration : capable of ±0.10% or better from nom. flow rate - Over 10 : 1 range
Mech. registration : capable of ±0.22% or better from nom. flow rate
Elect. registration : capable of ±0.10% or better from nom. flow rate - Over 40 : 1 range
Mech. registration : capable of ±0.5% or better from nom. flow rate
Elect. registration : capable of ±0.15% or better from nom. flow rate
Temperature ramge
-40°F to 160°F (-40°C to 71°C)
Relationship of meter pressure drop to flow rate and viscosity
With Liquid Controls unique design, the bearing surfaces of the meter element are internally and externally subjected to the same systems pressure. Due to the low pressure drop inherent to the LC meter, it is often posibble to satisfactorily meter higher viscosity products through a smaller LC meter than its competitive equivalent. Pressure drop through a meter depends on product temperature, viscosity and flow rate. When metering a liquid the pressure dropp 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 | 4 Inch |
| Max. Nominal Flow Rate | 350 GPM |
| Max. Nominal Flow Rate | 1323 LPM |
| Max. Nominal Flow Rate | 79 M3/H |
| Max. Pressure | 150 PSI |
| Max. Pressure | 10.3 Bar |
| Max. Pressure | 1034 kPA |