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ASF7100 Series

The ASF7100 Series Swirl Flowmeter is a gas flow meter that combines turbine & vortex flow measurement technologies to provide a reliable, high accuracy, robust, maintenance free flow meter. The turbine-shaped flow inlet causes the process flow to rotate causing a vortex core to form & a subsequent secondary rotation causes thread-like spirals to be formed. These resulting secondary pressure frequencies are linear & proportional & are measured by dual piezo-electric sensors. The resulting measurements are processed & pressure & temperature compensated and then converted to the flow measurement display. ASF7100 Series Swirl Flow meter can be widely used in petroleum, chemical, electricity, metallurgy, coal and other industries.

 2 Integral sensors reduce external vibration / frequency interference  
 No integral moving parts to ensure steady, reliable and long service life  
 Integral temperature & pressure measurement ensuring actual compensation  
 Multiple signal O/P's: 4-20 mA, Pulse, RS485, Alarm  
 Adjustable display / readout (90o, 180o, 270o, 360o) Simple adjustment  
 Battery powered, or external DC powered  
 Reduced  pressure loss due to internal piping configuration  
 Reduced upstream / downstream straight pipe requirements  

Size: Local Display:
15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 4 lines LCD
150, 200 mm (1/2", 3/4",1-1/4",1-1/2", 2",  7 Digit flowrate
2-1/2", 3", 4", 5", 6", 8") 8 Digit + 4 Decimal totalizer
Measuring Range: Unit:
0.3-3600 m3/hr Nm3/hr, m3/hr, kg/hr
Accuracy: Keypad:
+/-1.5% of reading (Standard) 3 Internal keys for programming 
+/-1.0% of reading (Option) and display configuration
Housing Material: Current Output:
Aluminum Alloy 4-20 mA (2 wire, 4 wire)
Body Material: Load
Cast Aluminum Alloy Rohm=(VDC-15) * 50
Stainless Steel 304 Output Unit
Stainless Steel 316 Normal flow rate / Actual flow rate
Stainless Steel 316L Pulse Output:
Process Connection: Active Frequency / Scale Pulse
Flange Type Rating
Flange Type: 24 VDC, 50 mA Max.
JIS 10K / JIS 20K / JIS 40K Alarm Output:
ANSI 150# / ANSI 300# / ANSI 600# 2 Relays, Upper and lower alarm
PN10 / PN16 / PN25 / PN40 Rating
Max. Pressure: 5A 30 VDC / 5A 250 VAC
Cast Aluminum Alloy, Max. 16 kgf/cm2 Output Unit
Stainless Steel, Max. 64 kgf/cm2 Normal flow rate / Actual flow rate / T / P
Medium Temperature: Communication:
-20~80 o RS485 (MODBUS)
Ambient Temperature: Data Storage:
-20~65 o Operation parameter and totalizer  
Power Supply: figures are stored by EEPROM (>10 yrs.)
15-30 VDC (2 Wire) Cable Entry:
24 VDC +/-15% (4 Wire) Standard: M20 * 1.5  Option: 1/2" NPTF
3.6V Battery, Size C Protection Class:
Power Consumption: IP65
<2W (24 VDC) Explosion Proof, Ex d IIC T4-T6
Battery Life: Sensor:
More than 2 years (3.6V Battery) Pressure Sensor
Piezoresistive silicon Sensor
Temperature Sensor

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