SENSOR, AIR FLOW, 2 PORT; Pressure, Max:25psi; Voltage, Supply DC Max:15V; Diameter, Port:5.1mm; Depth, External:0.61"; Hysteresis:+ 0.35% Reading Max.; Length / Height, External:1.24"; Power Consumption:30mW; Temp, Op. Max:85°C; Temp, Op. Min:-25°C; Width, External:1.2"
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Технические характеристики

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Диапазон измерения
Размер 54.4×31.5×15.5 мм
Рабочая температура
Примечания Microbridge Mass Airflow/Unamplified
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ISSUE 3 Installation Instructions for the AWM2000 Series WARNING PERSONAL INJURY DO NOT USE these products as safety or emergency stop devices or in any other application where failure of the product could result in personal injury. Failure to comply with these instructions could result in death or serious injury. PK 88544 Figure 3. Differential Instrumentation Amplifier PIN 2 (V1) R4 R3 1/4 LM124 R2 R1 V0 1/4 LM124 VS Figure 1. Heater Control Circuit R5 R3 R4 1/4 LM124 V OFFSET PIN 6 (V2) R6 OUTPUT VOLTAGE vs. FLOW AWM 2100 V 60 50 40 30 OUTPUT (mVdc) MEDIA CONTAMINATION Dust has the effect of clogging the porous metal flow restrictor (AWM2200V only). Dust accumulation causes the pressure drop across the sensor to increase for any given flow rate. Clogging can be prevented by use of an inexpensive 5 micron filter upstream of the sensing element. R2 20 10 0 -10 -20 -30 -40 -50 -60 -200 0 100 NOMINAL MN/MAX -100 MASS - FLOW (SCCM) 200 AWM 2200 V 40 30 20 OUTPUT (mVdc) GENERAL INFORMATION The AWM2000 Series Microbridge Mass Airflow Sensor is a passive device consisting of two Wheatstone bridges: one for closed loop heater control and one for the twin sensing elements. The heater control in Figure 1 is required for operation per specification. The sensing bridge supply circuit in Figure 2 is also required. The differential instrumentation amplifier in Figure 3 can be used to increase gain and introduce voltage offsets to sensor output. 10 0 -10 -20 -30 -40 -4 -2 0 2 4 DIFFERENTIAL PRESSURE (INCHES OF WATER) NOMINAL MIN/MAX AWM 2300 V 60 40 Figure 2. Sensing Bridge Supply Circuit OUTPUT (mVdc) 20 0 -20 -40 -60 -80 -100 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 MASS - FLOW (SCCM) (THOUSANDS) NOMINAL Sensing and Control 1 MIN/MAX © Honeywell 2003, All Rights Reserved PDF
Документация на серию AWM2000 

AWM2000 Series Microbridge Mass Airflow Sensors

Дата модификации: 03.12.2020

Размер: 254.4 Кб

4 стр.

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