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Air Flow Monitor EWA1 (Discontinued Products)

Specifications

COMMON SPECIFICATIONS

Item Specifications
Rated pressure range 0 to 1 MPa (gauge pressure)
Measurable fluid Air (compressed air)
Rated operating voltage 24 V DC ±10 %
Rated power consumption 40 mA or less
Pulse output
(Pulse output 1 and Pulse output 2)
Open drain output
•Max. inflow current: 10 mA
•Applied voltage: 24 V DC or less
•Residual voltage: 1 V or less
(at inflow current 10 mA)
  Output mode Pulse output 1: Direct flow pulse
Pulse output 2: Reverse flow pulse, Flow limit alarm
(select by button operation)
Over current protection Equipped
Pulse output duty 1:1 (35 to 65 %)
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 by button operation)
  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 : 4 mA, +60 ℃ +140 : 20 mA
Pressure loss Extremely small
(same as straight pipe)
Response time 500 ms
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)

INDIVIDUAL SPECIFICATIONS

Small pipe size type

Model No. AEWA1025 AEWA1032
Pipe size 25A (1B) 32A (1 1/4B)
Flow range (actual flow) −0.6 to −35 m3/h or+0.6 to +35 m3/h −1.1 to −65 m3/h or+1.1 to +65 m3/h
Flow measuring
accuracy
±5 % R.S. −0.6 to −3.5 m3/h or+0.6 to +3.5 m3/h −1.1 to −6.5 m3/h or+1.1 to +6.5 m3/h
±2 % R.S. −3.5 to −35 m3/h or+3.5 to +35 m3/h −6.5 to −65 m3/h or+6.5 to +65 m3/h
Normal conversion
accuracy
±2.5 % R.S.
(at dry air, ordinary temperatures and 0.5 MPa)
Unit for pulse output 10, 100, 1,000 NL/pulse or L/pulse
Low flow cut off Within ±0.09 m3/h Within ±0.16 m3/h
Material Measuring pipe: Aluminum alloy, PPS and phlor silicone rubber
Net weight 1.5 kg approx. 1.4 kg approx.
Accessories M4 hexagon wrench: 1 pc

Medium pipe size type

Model No. AEWA1040 AEWA1050 AEWA1065 AEWA1080
Pipe size 40A (1 1/2B) 50A (2B) 65A (2 1/2B) 80A (3B)
Flow range (actual flow) −1.3 to −80 m3/h
or
+1.3 to +80 m3/h
−2.5 to −150 m3/h
or
+2.5 to +150 m3/h
−4 to −240 m3/h
or
+4 to +240 m3/h
−5 to −300 m3/h
or
+5 to +300 m3/h
Flow measuring
accuracy
±5 % R.S. −1.3 to −8 m3/h
or
+1.3 to +8 m3/h
−2.5 to −15 m3/h
or
+2.5 to +15 m3/h
−4 to −24 m3/h
or
+4 to +24 m3/h
−5 to −30 m3/h
or
+5 to +30 m3/h
±2 % R.S. −8 to −80 m3/h
or
+8 to +80 m3/h
−15 to −150 m3/h
or
+15 to +150 m3/h
−24 to −240 m3/h
or
+24 to +240 m3/h
−30 to −300 m3/h
or
+30 to +300 m3/h
Normal conversion
accuracy
±2.5 % R.S.
(at dry air, ordinary temperatures and 0.5 MPa)
Unit for pulse output 10, 100, 1,000 NL/pulse or L/pulse
Low flow cut off Within
±0.2 m3/h
Within
±0.4 m3/h
Within
±0.6 m3/h
Within
±0.8 m3/h
Material Measuring pipe: Aluminum alloy, PPS and phlor silicone rubber
Net weight 1.0 kg approx. 1.2 kg approx. 1.5 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)

Large pipe size type

Model No. AEWA1100 AEWA1150 AEWA1200
Pipe size 100A (4B) 150A (6B) 200A (8B)
Flow range (actual flow) −10 to −500 m3/h
or
+10 to +500 m3/h
−24 to −1,200 m3/h
or
+24 to +1,200 m3/h
−40 to −2,000 m3/h
or
+40 to +2,000 m3/h
Flow measuring
accuracy
±5 % R.S. −10 to −50 m3/h
or
+10 to +50 m3/h
−24 to −120 m3/h
or
+24 to +120 m3/h
−40 to −200 m3/h
or
+40 to +200 m3/h
±2 % R.S. −50 to −500 m3/h
or
+50 to +500 m3/h
−120 to −1,200 m3/h
or
+120 to +1,200 m3/h
−200 to −2,000 m3/h
or
+200 to +2,000 m3/h
Normal conversion
accuracy
±2 % R.S.
(at dry air, ordinary temperatures and 0.5 MPa)
Unit for pulse output 0.1, 1, 10 Nm3/pulse or m3/pulse
Low flow cut off Within
±2.6 m3/h
Within
±5.0 m3/h
Within
±9.0 m3/h
Material Measuring pipe: Stainless steel alloy, PPS and phlor silicone rubber
Net weight 10.3 kg approx. 18.3 kg approx. 24.4 kg approx.
Accessories Positioning collar: 2 pcs, M4 hexagon wrench: 1 pc
Normal flow conversion
*Please go to the below referenced web link regarding other temperature / pressure conditions.
>>Normal / Liter conversion chart of flow range

I/O CIRCUIT DIAGRAM

I/O CIRCUIT DIAGRAM
Note:
1) Max. resistive load should be 400 Ω or less.
2) Lead wire (pink) is not used. Be sure to insulate it.

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