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Produk // Swirl Flowmeter  
ASF7100 Series

The ASF7100 Series Swirl Flowmeter is a new type of gas flow meter which independently developed by ALIA. Using double sensors to achieve high accuracy and strong anti-interference. The structure is compact and no mechanical moving parts, with long service life. It adopts 16 Digit Microcomputer chip with high integration, small volume, good performance and excellent overall functions. It can detect flowrate, temp. and pressure, which also has automatic compensation function for temp., pressure and compressibility factor. ASF7100 Series Swirl Flowmeter can be widely used in petroleum, chemical, electricity, metallurgy, coal and other industries.

 Double sensors to suppress the interference from vibration or frequency   
 No mechanical moving parts, steady and reliable, long service life   
 With temp. & pressure compensation, real-time tracking and compensation   
 Multiple signal output: 4-20 mA, Pulse, RS485, Alarm   
 The display can be rotated at four directions, easy to install and use   
 Low power consumption, battery power or external power source   
 Lower pressure loss than the reduced bore type vortex flowmeter   
 Shorter upstream and downstream straight pipe for space-saving


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