In an effort to continue providing our customers with leading-edge sensor technology, in May 2009 we upgraded the ASDX Series silicon pressure portfolio with 1 and 5 psi low pressure sensors. In September 2009 we upgraded the portfolio with ultra-low pressure ranges that included 0 to 10 inches H2O gage, ±10 inches H2O differential, and ±5 inches H2O differential. Now we are announcing another upgrade to the ASDX Series that includes 15, 30, and 100 psi low pressure ranges.
As with the 1 and 5 psi low pressure sensors and the ultra-low pressure sensors, the new 15, 30, and 100 psi low pressure sensors incorporate ASIC technology for a fast response, an SPI digital output option, and a 3.3 V power supply.
This upgrade now gives Honeywell an ASDX Series product portfolio that includes the following pressure ranges:
| • | Low Pressure Products: 1 to 100 psi | |
| • | Ultra-Low Pressure Products: 0 to 10 in H2O gage, ±10 in H2O differential, ±5 in H2O differential |
Output Options
The ASDX Series is designed to provide digital correction of sensor offset, sensitivity, temperature coefficients, and non-linearity. These sensors are intended for use with non-corrosive, non-ionic working fluids such as air and dry gases. The ASDX Series’ footprint is slightly larger than Honeywell’s SDX, but includes additional signal conditioning integrated within the product. This allows the customer to remove the components associated with signal conditioning from their PC board to free space and reduce costs normally associated with those components (e.g., acquisition, inventory, assembly). Incorporating this capability within the sensor also eliminates many potential problems that could arise from having multiple components for signal conditioning spread across a circuit board.
Analog: Ratiometric 12-bit analog output for reading pressure over the specified full scale pressure span and temperature range, allowing for fast and easy integration into standard electronic circuits.
Digital: 12-bit I2C or SPI digital interface for reading pressure over the specified full scale pressure span and temperature range, minimizing connections and providing higher resolution and faster performance through reduced conversion requirements and the convenience of direct interface to the microprocessors and microcontrollers.
The new ASDX Series provides value for our customers by:
• Application flexibility: output options of ratiometric 12-bit analog, or 12-bit I2C or SPI digital; supply voltage of 3.3 or 5.0 Vdc; standard calibrations include inches H2O, cm H2O, psi, mbar, bar, kPa; pressure types: absolute, differential, gage
• Reliable: provides enhanced quality and reliability in many demanding operations
• Accurate and stable: provides accurate pressure monitoring and enhanced stability over
time
• Efficient: signal conditioned analog output allows for fast and easy integration into
standard electronic circuits; the digital interface option allows for the convenience of direct interface to
the microprocessors or microcontrollers
• Sensitive: achieves tight total error band, providing enhanced sensitivity and accuracy
even at ultra-low pressure ranges
| • | Barometry | |
| • | Flow calibrators/gas flow instrumentation | |
| • | HVAC | |
| • | Sleep apnea equipment | |
| • | Pneumatic control | |
| • | Ventilation/airflow monitors |
