AS-W Series

Since AS-W flow meter covers wider range from small to large flow rate, it contributes to cost saving and convenient facility management. At the same time, it saves the cost of redundant governor and piping.

･ Non-moving parts results in not degrading meter performance. It eventually makes needless to repair the parts and refuel the lubricant oil.
･ Because of the pressure loss being closely “0”, it can get rid of the pressure shortage risk.
･ Because of lightweight and compact feature, it enables easy installation and needs less space.

Product Specifications

Model				AS-W-25	AS-W-32	AS-W-40	AS-W-50	AS-W-80	AS-W-100	AS-W-150	AS-W-200
Nominal diameter				25A	32A	40A	50A	80A	100A	150A	200A
Power supply				Built-in lithium batteries
Years of duration				6 years (At surrounding temperature of 20℃) (Exclunding 1 year of storage period)
Measurable fluids				Natural gas and air
Working pressure (Absolute pressure)				0∼0.5MPa(AS-WW-□-500B[A/G]/3) 0∼0.2MPa(AS-WW-□-200B[A/G]/3) 0∼0.5MPa(AS-WW-□-0B[A/G]/3)		0∼1.0MPa(AS-WW-□-1000B[A/G]/3) 0∼0.5MPa(AS-WW-□-500B[A/G]/3) 0∼0.2MPa(AS-WW-□-200B[A/G]/3) 0∼1.0MPa(AS-WW-□-0B[A/G]/3)
Accuracy	Flowrate measurement accuracy *1	±5%RS (m³/h)	Actual flow rate (m³/h)	±0.7 ∼ 7	±1.3 ∼ 13	±1.6 ∼ 16	±3 ∼ 30	±6 ∼ 60	±10 ∼ 100	±24 ∼ 240	±40 ∼ 400
Accuracy	Flowrate measurement accuracy *1	±2%RS (m³/h)	Actual flow rate (m³/h)	±7 ∼ 35	±16 ∼ 65	±16 ∼ 80	±30 ∼ 150	±60 ∼ 300	±100 ∼ 500	±240 ∼ 1200	±400 ∼ 2000
Low flow cut-off (Initial flow rate) *2			Flow rate (m/s)	0.05 m/s or less
Low flow cut-off (Initial flow rate) *2			Actual flow rate (m³/h)	±0.1	±0.2	±0.2	±0.4	±0.8	±1.5	±3.2	±5.7
Fluid temperature and humidity				-20 to +60℃, 90% RH or less
Pressure loss				Zero (Equivalent to straight tube part)
Display	Accumulated flow volume			Accumulated flow volume: 00000000.0 (9 digits/m³ or Nm³)					Accumulated flow volume: 0000000000 (10 digits/m³ or Nm³)
	Instantaneous flow rate *3			(1) Maximum indication value: ±19999Nm³/h (converted flow rate) (2) Maximum indication value: ±19999Nm³/h (actual flow rate) (Two decimal places for a value less than 200, one decimal place for a value from 200 to less than 2000, integer only for a value of 2000 or more)
	Temperature *3			00.0℃ (3-digits)
	Pressure *3			0000.0kPa (5-digits)
Output	Contact output			Open drain output: Unit pulse (forward flow) Pulse unit: 100,1000,10000 (L/P or NL/P)
Output	Telegram output			RS485 Modbus/RTU
Connection method				ISO7-1 Taper screw connection(JISB 0203, BS21, GB/T7306, 2-2000) equivalent		ISO7005-1 (GB/T9119-2002 PN1.6MPa Flange) equivalent *4
Installation position				Horizontal and vertical
Installation location				Indoor and outdoor (protection level IP 64 or equivalent)
Case material				Aluminum alloy		Stainless alloy
The materials exposed to gases				Aluminum alloy and engineering plastic		Stainless alloy and engineering plastic
Mass				1.8kg	1.7kg	7.6kg	9.6kg	13.3kg	13.2kg	20.4kg	35.4kg

*1. The flow rate measurement range is ±5% RS: Inclusive before “∼” and not inclusive after “∼” and ±2% RS: Inclusive for both before and after “∼”.
*2. When the flow rate is less than 0.25% of the maximum flow rate, the instantaneous flow rate is indicated as 0 m³/h. For the normal conversion type, the low flow cut off value is the normal conversion flow rate corresponding to 0.05 m/s.
*3. Automatically switched in every 4 seconds.
*4. This flowmeter guarantees the flow measurement accuracy with the pipes listed in the table below.
(If you use pipes with the different pipe standard and size not listed in the table, the flowmeter may not satisfy the flow measurement accuracy. Consult us in advance if it is considered to use different pipes out of this range.)