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> Air Flow Monitor EWA2
> Specifications
Item | Specifications | ||
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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) |
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Output mode | Direct flow pulse | ||
Over current protection | Equipped | ||
Pulse output time | Duty(1:1) 50/100/125/250/500ms (select in setting mode) |
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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 ℉) |
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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. |
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Model No. | AEWA2025 | AEWA2032 | |
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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 |
Normal flow* [ Nm3/h ] |
−4.3 to −250 or +4.3 to +250 |
−8 to −470 or +8 to +470 |
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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 |
±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 |
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Model No. | AEWA2040 | AEWA2050 | AEWA2065 | AEWA2080 | |
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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 |
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 |
±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 |
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Model No. | AEWA2100 | AEWA2150 | AEWA2200 | |
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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 |
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 |
±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 |
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Item | Specifications | |
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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 |
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Transmission speed | 9,600/19,200/38,400/57,600/115,200 bps (select in setting mode) |
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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 |
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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.
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