Smith Meter PRIME 4
SubCategory:
Manufacturer: Guidant
Industry:
Product features
- Rotary positive-displacement principle → Provides direct volumetric measurement for terminal and custody-transfer duties
- Only three moving parts → Reduces mechanical complexity and maintenance points
- Direct pulse output → Eliminates the mechanical drive train and packing gland
- Polyketone blades → Support stable performance and reduced wear over time
- Horizontal rotor on dedicated bearings → Supports long service life in continuous loading-rack duty
- Normal flow range 285–2,850 l/min → Covers high-throughput terminal metering applications
- Extended flow range 190–3,400 l/min → Adds operating flexibility when conditions require it
- Published repeatability ±0.02% → Supports consistent measurement between proving intervals
- Multiple pressure-rated flange options → Enables selection for different piping specifications up to published limits
- AxFlow service and spare-parts support → Helps maintain measurement performance and lifecycle continuity
Smith Meter PRIME 4 is a 4-inch single-case rotary positive-displacement meter for loading-rack service and custody-transfer measurement of petroleum liquids. Guidant lists applications including gasoline and oxygenates, ethanol, kerosene, diesel fuel, jet fuels and fuel oils. The meter is intended for installations where stable volumetric measurement, repeatability and serviceability are central to terminal operation.
The measuring element uses a horizontal rotor with two reciprocating polyketone blades operating around a fixed cam. As the rotor turns, accurately defined measuring chambers are formed and displaced through the meter. The rotor and blades do not contact the stationary measuring-chamber walls, while direct pulse output removes the mechanical drive train and packing gland used in more complex legacy arrangements.
Current Guidant specifications list a normal flow range of 285–2,850 l/min, with an extended range of 190–3,400 l/min. Repeatability is specified at ±0.02%, with linearity of ±0.15% over the normal flow range and ±0.25% over the extended range under the stated reference conditions. Depending on flange configuration, published maximum working pressure reaches 25 bar, and standard low-temperature FKM seals are specified for −29 to 93 °C.
The simplified three-moving-part construction, direct pulse sensing and serviceable measuring element are intended to reduce wear points and maintenance intervention. Correct proving, calibration, seal selection and verification of product compatibility remain essential in custody-transfer service. AxFlow can support meter selection, installation review, service and spare-parts identification for Smith Meter PRIME 4 applications.
