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AWM720P1 High-performance Gas Flow Sensor For Medical Devices Industrial Analytical instruments
AWM700 Series Airflow Sensors Description
The AWM700 Series, Compensated/Amplified Airflow Sensors provide
in-line flow measurement with a specially designed bypass flow
housing. These sensors measure flow as high as 300 standard liters
per minute (SLPM) while inducing a typical pressure drop of 1
inH2O.
The AWM700 has a high flow range capability in a small package, as
well as a 6 ms response time. These sensors require a 10 Vdc
supply, but consume only 60 mW of power.
The compact plastic package withstands overpressures of 1720 mbar |
172 kPa | 25 psi without compromising performance. The snap-in
AMP-compatible connector provides reliable connection.
The AWM700 Series provides a combination of time-proven
reliability, high accuracy, and precision operating
characteristics. This inherent accuracy over life reduces need for
recalibration. AWM700 sensor circuitry performs amplification and
temperature compensation.
The AWM720P1 and AWM730B5 were developed primarily for the medical
ventilation market and meet the high performance requirements of
many medical and analytical instrumentation applications.
AWM700 Series Airflow Sensors Key Features and Benefits
• Flow tubes for ranges up to 300 SLPM: Provides low pressure drop
in the customer's application
• Highly stable null and full scale: Does not require recalibration
in most applications
• Compact package design: Occupies less space in the customer's
enclosure, potentially reducing production costs; enclosure size
may also be reduced for easier fit into space-constrained
applications
• Low hysteresis and repeatability errors (less than 0.35% of
reading): Provides better system accuracy
• Enhanced response flow time of 6 ms: Captures full flow event
• Low power consumption: Allows for use in portable devices and
battery-powered applications
AWM700 Series Airflow Sensors Potential Applications
MEDICAL
• Oxygen concentrators and conservers
• Respirators and ventilators
• Nebulizers
• Continuous positive airway pressure (CPAP)
• Anesthesia machines
INDUSTRIAL
• Mass flow controllers
• Telecommunication systems
• Environmental climate controls
• Fuel cell controls
• Process gas control welding equipment and lasers
AWM700 Series Airflow Sensors Specifications
Characteristic | Parameter | |
AWM720P1 | AWM730B5 | |
Flow range | +200 SLPM | ±300 SLPM |
Excitation voltage | 10 Vdc ±0.01 Vdc | 5 Vdc ±0.01 Vdc |
Power supply | 8.0 Vdc min./10.0 Vdc typ./15.0 Vdc max. | 9.0 Vdc min./16.0 Vdc max. |
Power consumption | 60 mW | |
Output loading: sinking sourcing | 10 mA typ. 20 mA typ | |
Calibration gas | air | |
Null voltage shift: 25 °C to -25 °C [77 °F to -13 °F] 25 °C to 85 °C [77 °F to 185 °F] 25 °C to 5 °C [77 °F to 41 °F] 25 °C to 60 °C [77 °F to 140 °F] | -2.0 Vdc %reading typ. +2.0 Vdc %reading typ. — — | — — ±2.5 %reading typ. ±2.5 %reading typ. |
Ratiometricity error | ±0.30 %reading typ. | — |
Repeatability and hysteresis | ±0.50 %reading max. | ±0.035 Vdc typ. |
Response time | 6 ms typ. | 10 ms typ. |
Warmup time | — | 5 s |
Pressure drop at full scale | 2,5 mbar | 250 Pa | 1.0 inH20 typ. | 3,0 mbar | 300 Pa | 1.2 inH20 typ. |
Overpressure | 1720 mbar | 172 kPa | 25 psi max. | 1034 mbar | 103 kPa | 15 psi max. |
Temperature range: operating storage | -25 °C to 85 °C [-13 °F to 185 °F] -40 °C to 90 °C [-40 °F to 194 °F] | 5 °C to 60 °C [41 °F to 140 °F] -40 °C to 90 °C [-40 °F to 194 °F] |
Orientation sensitivity | — | <0.005 Vdc typ. variation at 5 Vdc excitation between any two directions |
Weight | 34 g [1.20 oz] | 23,2 g [0.75 oz] |
Connector | snap-in AMP 103956-3 provided with sensor |