AICHI AS-40-200B Natural Gas Ultrasonic Flowmeter DN40 City Gas Flowmeter
* Operating Gas Temperature & Humidity: -20℃ to +60℃, relative humidity below 90%.
* Operating Environmental Temperature & Humidity: -30℃ to +70℃, relative humidity below 90%.
* Operating Pressure Range: ≤0.5 MPa (absolute pressure) for AS25/AS32; ≤1.0 MPa (absolute pressure) for AS40~AS200.
* Body Material: AS25/AS32: aluminum alloy; AS40~AS200: SUS304 stainless steel.
* Explosion - Proof & Protection Level: EX ib IIB T4 Gb; IP65.
* Installation Method: Horizontal or vertical.
* Communication Protocol: RS485, MODBUS/RTU.
* Communication Rate: 4800bps, 9600bps.
* Pulse Type: Open drain (open - collector).
* Supply Voltage: 9VDC.
* Connection Form: AS25~AS200: Flange connection per GB/T9119 - 2000 PN1.6MPa (AS25/AS32: internal thread RC type on the main
body).
* Instantaneous Flow Display: Standard condition flow, working condition flow (maximum display ±19999; AS200 instantaneous flow
= display value ×10).
* Temperature & Pressure Display: Temperature: 00.0℃ (3 digits); Pressure: 0000.0 kPa (5 digits).
* Cumulative Flow Display: 000000000.0 Nm³ (9 digits, DN25~DN80); 0000000000 Nm³ (10 digits, DN100~DN200).
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