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Product information
Specifications

AVF250H Alia Vietnam signal converter

Introducing AVF250H Alia Vietnam

The AVF250H series is a horizontally mounted metal tube variable area flowmeter. With its unique design, it can provide a mechanical pointer display without power supply, as well as being intrinsically safe and explosion-proof to suit various operating conditions.

Features of AVF250H Alia Vietnam

Spring mounted horizontal metal tube flow meter
5-digit flow & 7-digit totalizer
The local indicator has no auxiliary power
4-20 mA and scaled pulse output
Low pressure loss in gas and steam applications
Regulator for Gas/Steam applications
Consistent overall length
Intrinsically safe & explosion-proof for hazardous areas

Specifications

Size	:	15,20,25,40,50,65,80,100,125,150,200 mm
Measuring range	:	Liquid -1~200000 L/hour
	:	Gas -0.03~3000 m3 ^/ hour
Initial rate	:	10:1 (20:1 optional)
Accuracy	:	+/- 2.5% (Standard)
	:	+/-1.5% (Optional)
Repeatability	:	+/-0,8% FS
Material
Tube & Float	:	304 stainless steel
	:	316 stainless steel
Standard pressure	:	40 kgf/cm2 ⁽ 15-50mm)
	:	16 kgf/cm2 ⁽ 65-200 mm)
Temperature	:	0-100°C (Standard)
Flange type	:	HE 10K / HE 20K / HE 40K
		ANSI 150# / ANSI 300# / ANSI 600#
		DIN PN10 / PN16 / PN25 / PN40
Fluid viscosity	:	Maximum 300 cP.
Communicate	:	RS485 (MODBUS Protocol)
	:	HART Signal (Compatible)
Data saving	:	Operating parameters and totalizer
		The data is stored by EEPROM
		More than 10 years

Local display	:	Mechanical indicator (Standard)
Displays digits	:	5-digit flow rate
	:	Set of 7-digit sums
Output current	:	4-20 mA (2 wire)
Payload	:	Max. 600 Ω
Pulse output	:	Open Collector (Proportional Pulse)
Rating	:	3-30 VDC, 100 mA max.
Limit switch	:	NAMUR 2 wire (For Exia/Exd)
	:	3-wire transistor
Keyboard	:	3 internal keys for programming
		and display controls
Ambient temperature	:	0-60°C
Protection class	:	IP65
	:	Intrinsic safety, Eex ia IIC T5
	:	Explosion-proof, Ex d IIC T6
Housing materials	:	Aluminum alloy
Enter the cable	:	Standard: M20 Optional: 1/2" NPTF
Pressure loss	:	0,07-0,7 kgf/ ^cm2
Power supply	:	12-32 VDC
	:	Ni-MH battery (3 years working hours)