Panel-Mounting Flowmeters Purge Set (Flowmeter with Constant Flow Valve)

Transcription

1 Panel-Mounting Flowmeters Purge Set (Flowmeter with Constant Flow Valve) When working pressure change, inside diaphragm and needle valve operates in order to always keeping a fixed flow rate for exact measurement of constant flow setting, level, density. FKP Series Specification: 1. Accuracy: ±2% of F.S Indicator ) 2. Max. Operating Pressure: Max. 10kgf/cm 2 G 3. Max. Operating Temperature: Max. 120 C (300 C Option) 4. Operating Differential Pressure Range: 0.5~3kgf/cm 2 G, 0.3~3kgf/cm 2 G, 0.6~4kgf/cm 2 G, 1~5kgf/cm 2 G Operation Principle: In the PRIMARY(INLET) PRESSURE VARIATION CONTROL TYPE, the fluid, of which inlet pressure varies, is introduced from IN to the lower chamber of the С series Constant Flow Valve. The load pressure (Secondary pressure) is connected to the upper chamber. The differential pressure between the lower chamber and the upper chamber is always constant thanks to the function of the Spring and the Diaphragm. The differential pressure across the needle valve is kept always constant and the flow rate of the fluid is proportional only to the opening of needle valve. The opposite action is taken for SECONDARY (OUTLET) PRESSURE VARIATION CONTROL TYPE and the flow rate is kept also constant even when the load pressure changes.

2 SUPPLY PRESSURE VARIATION LEVEL MEASUREMENT As shown above, in case one large supply line branches into several lines and the supply pressure changes because of stoppage of some branches. Primary Pressure Variation type Purge set will be suitable in keeping the purging volume of fluid. Liquid level in tanks is measured by the Backpressure at the edge of purging pipe. The outlet pressure at the tank bottom changes depending on the liquid level, and constant bubbling is required. Thus, Secondary Pressure Variation type purge set is used for this application. A Dp transmitter is often connected to pressure line instead of pressure gauge for remote transmission. PURGING FOR ORIFICE PLATE APPLICATION DENSITY MEASUREMENT For the measurement of flaw rate of corrosive liquids and/or liquids with solids by orifice plate, an equal pressure purging both to High and Low pressure parts so as not to introduce liquid and/or solids into Dp by pass line. Dual mount type purge set used. For continuous measurement of density of liquid in tanks. purging system is used as shown above.

3 Panel-Mounting Flowmeters FKP2 series (Purge Set) Model Code: FКР2 Code Description Indicator FKOI Glass Tube Indicator FKMS Metal Tube Indicator A 130mm of FKOI Series Connection С 200mm of FKOI Series Length D 240mm of FKOI Series MF 180mm of FKMS Series 1 SUS304 Material 2 SUS3I6 X Special Option IN Inlet Control OUT Outlet Control Standard Specification: Model Identification : Inlet pressure variation control type Outlet pressure variation control type Available Flow Ranges: Liquids:Max. 2L/min *1 Gases: Max. 50L/min (nor) *2 Max. Oper. Press.: 1.0 MPa (10kg/cm 2 G) Temp.: Max. I20 C Min. Required DP: 0.06MPa (0.6kg/cm 2 G) Max. Controllable DP : 0.4MPa (4kg/cm 2 ) Control Accuracy: ±3% of F.S *1: Water (Density 1.0 g/cm 2, Viscosity 1.0cP) *2:, 0 C, 1atm Standard Specification: Part Name Material Standard Option Body SCSI 4 - Diaphragm CR VITON Spring SUS304 SUS316 Seal NBR VITON, PTFE Standard Process Connection: PT 1/4 Thread

4 Structure & Dimensions: Inlet Pressure Variation Control Type (Also used for Outlet Pressure Variation in liquid applications) FKP2-FKOI-A-1-IN Water Min ~0.03L/min. Max. 0.4~2 L/min. Water Min ~0.07L/min. FKP2-FKOI-C-1-IN Max. 0.2~2 L/min. (0 C, 1atm.) Max. 5~50 NL/min. Inlet Pressure Variation Control Type (Also used for Outlet Pressure Variation in liquid applications) FKP2-FKOI-D-1-IN Water Min ~0.03L/min. Max. 0.4~2 L/min. Water Min ~0.07L/min. FKP2-FKMS-MF-1-IN Max. 0.2~2 L/min.

5 Outlet Pressure Variation Control Type FKP2-FKOI-A-1-OUT FKP2-FKOI-C-1-OUT Outlet Pressure Variation Control Type FKP2-FKOI-D-1-OUT FFKP2-FKMS-MF-1-OUT