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Air Flow Monitor EWA2 (Discontinued Products)

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We are sorry, the products have been discontinued. Please refer to the details of the discontinued products and the recommended substitutes list below.

	September 29, 2023

Discontinued Products
Information

Specifications

Dimensions

Circuit/ Wiring

Specifications

Common specifications

Item			Specifications
Rated pressure range			0 to 1 MPa (gauge pressure)
Rated operating voltage			24V DC±10%
Power consumption			1.5 W or less
Pulse output			Open drain output ・Max. inflow current : 50mA ・Applied voltage : 24V DC or less ・Residual voltage: 1.5 V or less (at inflow current 50 mA)
	Output mode		Direct flow pulse
	Over current protection		Equipped
	Pulse output time		Duty(1：1) 50/100/125/250/500ms (select in setting mode)
Analog current output			Output current: 4 to 20 mA Output accuracy: ±0.1 mA Max. external load: 400 Ω or less
	Output mode		Instant flow, air pressure and temperature (select in setting mode)
		Instant flow	Zero point: 4 mA (Direct flow display mode, reverse flow ～ within low flow cut off) 12 mA (Direct/Reverse flow display mode, within low flow cut off)
		Air pressure	0 kPa: 4 mA, 1 MPa: 20 mA
		Temperature	−10℃ +14 ℉ : 4mA, ＋60℃ +140 ℉ : 20mA
Pressure loss			Extremely small (same as straight pipe)
Response time			500ms
Using environment	Enclosure protection		IP64(IEC)
	Ambient temperature		−10 to ＋60℃ +14 to +140 ℉ (Storage: -20 to +70 ℃ -4 to +158 ℉)
	Ambient humidity		90 % RH or less (No dew condensation or icing allowed)

* When installing the monitor in a horizontal pipe, install it with its display facing up.
It can also be installed to vertical pipings.

*	When installing the monitor in a horizontal pipe, install it with its display facing up. It can also be installed to vertical pipings.

Individual specifications

Small pipe size type

Model No.		AEWA2025	AEWA2032
Pipe size		25A (1B)	32A (1 1/4B)
Measurable fluids		Air (compressed air), Nitrogen gas
Flow range	Actual flow [ m³/h ]	−0.6 to −35 or ＋0.6 to ＋35	−1.1 to −65 or ＋1.1 to ＋65
Flow range	Normal flow* [ Nm³/h ]	−4.3 to −250 or +4.3 to +250	−8 to −470 or +8 to +470
Flow measuring accuracy	±5％R.S. [ m³/h ]	−0.6 to −3.5 or ＋0.6 to ＋3.5	−1.1 to −6.5 or ＋1.1 to ＋6.5
Flow measuring accuracy	±2％R.S. [ m³/h ]	−3.5 to −35 or ＋3.5 to ＋35	−6.5 to −65 or ＋6.5 to ＋65
Conversion accuracy		±2.5%R.S.〔at dry air or nitrogen gas (at 90 % RH or below), ordinary temperatures and 0.5 MPa〕
Unit for pulse output		10 / 100 / 1,000 [L/pulse]
Low flow cut off		Within ±0.1m³/h	Within ±0.2m³/h
Material		Measuring pipe: Aluminum alloy, PPS, FVMQ
Net weight		1.5 kg approx.	1.4 kg approx.
Accessories		M4 hexagon wrench: 1 pc

* With supply pressure 0.7 MPa and temperature in pipe at +25 ℃ +77 °F

*	With supply pressure 0.7 MPa and temperature in pipe at +25 ℃ +77 °F

Medium pipe size type

Model No.		AEWA2040	AEWA2050	AEWA2065	AEWA2080
Pipe size		40A (1 1/2B)	50A (2B)	65A (2 1/2B)	80A (3B)
Measurable fluids		Air (compressed air), Nitrogen gas
Flow range	Actual flow [ m³/h ]	−1.3 to −80 or ＋1.3 to ＋80	−2.5 to −150 or ＋2.5 to ＋150	−4 to −240 or ＋4 to ＋240	−5 to −300 or ＋5 to ＋300
Flow range	Normal flow* [ Nm³/h ]	−9.4 to −580 or +9.4 to +580	−18 to −1,090 or +18 to +1,090	−29 to −1,740 or +29 to +1,740	−36 to −2,170 or +36 to +2,170
Flow measuring accuracy	±5％R.S. [ m³/h ]	−1.3 to −8 or ＋1.3 to ＋8	−2.5 to −15 or ＋2.5 to ＋15	−4 to −24 or ＋4 to ＋24	-5 to −30 or ＋5 to ＋30
Flow measuring accuracy	±2％R.S. [ m³/h ]	−8 to −80 or ＋8 to ＋80	−15 to −150 or ＋15 to ＋150	−24 to −240 or ＋24 to ＋240	−30 to −300 or ＋30 to ＋300
Conversion accuracy		±2.5%R.S.〔at dry air or nitrogen gas (at 90 % RH or below), ordinary temperatures and 0.5 MPa]〕
Unit for pulse output		10 / 100 / 1,000 [L/pulse]
Low flow cut off		Within ±0.2m³/h	Within ±0.4m³/h	Within ±0.6m³/h	Within ±0.8m³/h
Material		Measuring pipe: Aluminum alloy, PPS, FVMQ
Net weight		1.0 kg approx.	1.2 kg approx.	1.4 kg approx.	1.7 kg approx.
Accessories		Positioning collar: 4 pcs, M4 hexagon wrench: 1 pc, Flange packing: 2 pcs, Bolt set: 1 set (bolt, nut and plain washer)

* With supply pressure 0.7 MPa and temperature in pipe at +25 ℃ +77 °F

*	With supply pressure 0.7 MPa and temperature in pipe at +25 ℃ +77 °F

Large pipe size type

Model No.		AEWA2100	AEWA2150	AEWA2200
Pipe size		100A (4B)	150A (6B)	200A (8B)
Measurable fluid		Air (compressed air)
Flow range	Actual flow [ m³/h ]	−10 to −500 or ＋10 to ＋500	−24 to −1,200 or ＋24 to ＋1,200	−40 to −2,000 or ＋40 to ＋2,000
Flow range	Normal flow* [ Nm³/h ]	−72 to −3,620 or +72 to +3,620	−170 to −8,690 or +170 to +8,690	−290 to −14,490 or +290 to +14,490
Flow measuring accuracy	±5％R.S. [ m³/h ]	−10 to −50 or ＋10 to ＋50	−24 to −120 or ＋24 to ＋120	−40 to −200 or ＋40 to ＋200
Flow measuring accuracy	±2％R.S. [ m³/h ]	−50 to −500 or ＋50 to ＋500	−120 to −1,200 or ＋120 to ＋1,200	−200 to −2,000 or ＋200 to ＋2,000
Conversion accuracy		±2.0 %R.S.〔at dry air (at 90 % RH or below), ordinary temperatures and 0.3 MPa〕
Unit for pulse output		100 / 1,000 / 10,000 [L/pulse]
Low flow cut off		Within ±2.6m³/h	Within ±5.0m³/h	Within ±9.0m³/h
Material		Measuring pipe: Stainless alloy, PPS and FVMQ
Net weight		10.3kg approx.	18.3kg approx.	24.4kg approx.
Accessories		Positioning collar: 2 pcs, M4 hexagon wrench: 1 pc

* With supply pressure 0.7 MPa and temperature in pipe at +25 ℃ +77 °F

*	With supply pressure 0.7 MPa and temperature in pipe at +25 ℃ +77 °F

Communication specifications

Item		Specifications
Interface		Conforming to EIA-485
Protocol		Modbus RTU
Communication method		Half-duplex
Synchronous system		Synchronous communication method
Number of connected units		115,200 bps: Max. 8 units 9,600/19,200/38,400/57,600 bps: Max. 31 units
Transmission speed		9,600/19,200/38,400/57,600/115,200 bps (select in setting mode)
Transmission format	Data length	8 bit
	Stop bit	1 bit/2 bit
	Parity	None/Odd number/Even number
Data buffer		100 byte
Response time		9,600bps: 100 to 130ms 19,200bps: 70 to 100ms 38,400bps: 50 to 80ms 57,600bps: 40 to 70ms 11,5200bps: 40 to 70ms
Ending resistance		100 Ω approx. (built-in) (select in setting mode)

* The number of connectable units, transmission distance, and transmission speed may differ depending on the device to be connected and transmission path. Please confirm using the actual device.

■Note on installation
When installing the monitor in a horizontal pipe, install it with its display facing up. It can also be installed to vertical pipings.

NORMAL FLOW CONVERSION VALUE EXAMPLES

(unit：Nm³/h)

Model No.	Actual flow	Temp[℃]	Air pressure［MPa］
Model No.	Actual flow	Temp[℃]	0(atmospheric pressure)	0.4	0.5	0.6
AEWA2025	±0.6 to 35m³/h	0	±0.6 to 35	±3 to 170	±3.6 to 210	±4.2 to 240
		20	±0.6 to 33	±2.8 to 160	±3.3 to 190	±3.9 to 230
		25	±0.5 to 32	±2.7 to 160	±3.3 to 190	±3.8 to 220
		30	±0.5 to 32	±2.7 to 160	±3.2 to 190	±3.7 to 220
AEWA2032	±1.1 to 65m³/h	0	±1.1 to 65	±5.4 to 320	±6.5 to 390	±7.6 to 450
		20	±1 to 61	±5.1 to 300	±6.1 to 360	±7.1 to 420
		25	±1 to 60	±5 to 290	±6 to 350	±7 to 410
		30	±1 to 59	±4.9 to 290	±5.9 to 350	±6.9 to 410
AEWA2040	±1.3 to 80m³/h	0	±1.3 to 80	±6.4 to 400	±7.7 to 470	±9 to 550
		20	±1.2 to 75	±6 to 370	±7.2 to 440	±8.4 to 520
		25	±1.2 to 73	±5.9 to 360	±7.1 to 430	±8.2 to 510
		30	±1.2 to 72	±5.8 to 360	±7 to 430	±8.1 to 500
AEWA2050	±2.5 to 150m³/h	0	±2.5 to 150	±12 to 740	±15 to 890	±17 to 1,040
		20	±2.3 to 140	±12 to 690	±14 to 830	±16 to 970
		25	±2.3 to 140	±11 to 680	±14 to 820	±16 to 950
		30	±2.3 to 140	±11 to 670	±13 to 800	±16 to 940
AEWA2065	±4 to 240m³/h	0	±4 to 240	±20 to 1,190	±24 to 1,420	±28 to 1,660
		20	±3.7 to 220	±18 to 1,110	±22 to 1,330	±26 to 1,550
		25	±3.7 to 220	±18 to 1,090	±22 to 1,300	±25 to 1,520
		30	±3.6 to 220	±18 to 1,070	±21 to 1,280	±25 to 1,500
AEWA2080	±5 to 300m³/h	0	±5 to 300	±25 to 1,480	±30 to 1,780	±35 to 2,080
		20	±4.7 to 280	±23 to 1,380	±28 to 1,660	±32 to 1,930
		25	±4.6 to 270	±23 to 1,360	±27 to 1,630	±32 to 1,900
		30	±4.5 to 270	±22 to 1,340	±27 to 1,600	±31 to 1,870
AEWA2100	±10 to 500m³/h	0	±10 to 500	±49 to 2,470	±59 to 2,970	±69 to 3,460
		20	±9.3 to 470	±46 to 2,300	±55 to 2,760	±64 to 3,220
		25	±9.2 to 460	±45 to 2,270	±54 to 2,720	±63 to 3,170
		30	±9 to 450	±45 to 2,230	±53 to 2,670	±62 to 3,120
AEWA2150	±24 to 1,200m³/h	0	±24 to 1,200	±120 to 5,940	±140 to 7,120	±170 to 8,310
		20	±22 to 1,120	±110 to 5,530	±130 to 6,640	±150 to 7,740
		25	±22 to 1,100	±110 to 5,440	±130 to 6,520	±150 to 7,610
		30	±22 to 1,080	±110 to 5,350	±130 to 6,420	±150 to 7,480
AEWA2200	±40 to 2,000m³/h	0	±40 to 2,000	±200 to 9,890	±240 to 11,870	±280 to 13,840
		20	±37 to 1,860	±180 to 9,220	±220 to 11,060	±260 to 12,900
		25	±37 to 1,830	±180 to 9,070	±220 to 10,870	±250 to 12,680
		30	±36 to 1,800	±180 to 8,920	±210 to 10,690	±250 to 12,470

Model No.	Actual flow	Temp[℃]	Air pressure［MPa］
Model No.	Actual flow	Temp[℃]	0.7	0.8	0.9	0.98
AEWA2025	±0.6 to 35m³/h	0	±4.7 to 280	±5.3 to 310	±5.9 to 350	±6.4 to 370
		20	±4.4 to 260	±5 to 290	±5.5 to 320	±6 to 350
		25	±4.3 to 250	±4.9 to 290	±5.4 to 320	±5.9 to 340
		30	±4.3 to 250	±4.8 to 280	±5.3 to 310	±5.8 to 340
AEWA2032	±1.1 to 65m³/h	0	±8.7 to 510	±9.8 to 580	±11 to 640	±12 to 690
		20	±8.1 to 480	±9.1 to 540	±10 to 600	±11 to 650
		25	±8 to 470	±9 to 530	±10 to 590	±11 to 640
		30	±7.8 to 460	±8.8 to 520	±9.8 to 580	±11 to 620
AEWA2040	±1.3 to 80m³/h	0	±10 to 630	±12 to 710	±13 to 790	±14 to 850
		20	±9.6 to 590	±11 to 660	±12 to 740	±13 to 800
		25	±9.4 to 580	±11 to 650	±12 to 720	±13 to 780
		30	±9.3 to 570	±10 to 640	±12 to 710	±12 to 770
AEWA2050	±2.5 to 150m³/h	0	±20 to 1,190	±22 to 1,330	±25 to 1,480	±27 to 1,600
		20	±18 to 1,110	±21 to 1,240	±23 to 1,380	±25 to 1,490
		25	±18 to 1,090	±20 to 1,220	±23 to 1,360	±24 to 1,470
		30	±18 to 1,070	±20 to 1,200	±22 to 1,340	±24 to 1,440
AEWA2065	±4 to 240m³/h	0	±32 to 1,900	±36 to 2,130	±40 to 2,370	±43 to 2,560
		20	±29 to 1,770	±33 to 1,990	±37 to 2,210	±40 to 2,390
		25	±29 to 1,740	±33 to 1,960	±36 to 2,170	±39 to 2,350
		30	±29 to 1,710	±32 to 1,920	±36 to 2,140	±38 to 2,310
AEWA2080	±5 to 300m³/h	0	±40 to 2,370	±44 to 2,670	±49 to 2,960	±53 to 3,200
		20	±37 to 2,210	±41 to 2,490	±46 to 2,760	±50 to 2,980
		25	±36 to 2,170	±41 to 2,440	±45 to 2,720	±49 to 2,930
		30	±36 to 2,140	±40 to 2,400	±45 to 2,670	±48 to 2,880
AEWA2100	±10 to 500m³/h	0	±79 to 3,950	±89 to 4,450	±99 to 4,940	±110 to 5,340
		20	±74 to 3,680	±83 to 4,140	±92 to 4,600	±99 to 4,970
		25	±72 to 3,620	±81 to 4,070	±91 to 4,530	±98 to 4,890
		30	±71 to 3,560	±80 to 4,010	±89 to 4,450	±96 to 4,810
AEWA2150	±24 to 1,200m³/h	0	±190 to 9,490	±210 to 10,670	±240 to 11,860	±260 to 12,810
		20	±180 to 8,840	±200 to 9,950	±220 to 11,050	±240 to 11,930
		25	±170 to 8,690	±200 to 9,780	±220 to 10,860	±230 to 11,730
		30	±170 to 8,550	±190 to 9,620	±210 to 10,680	±230 to 11,540
AEWA2200	±40 to 2,000m³/h	0	±320 to 15,820	±360 to 17,790	±400 to 19,760	±430 to 21,340
		20	±290 to 14,740	±330 to 16,580	±370 to 18,420	±400 to 19,890
		25	±290 to 14,490	±330 to 16,300	±360 to 18,110	±390 to 19,550
		30	±290 to 14,250	±320 to 16,030	±360 to 17,810	±380 to 19,230