Reliably Sensing Ultra Low Pressure

Honeywell TruStability ultra-low pressure sensors have three performance attributes difficult to achieve in the same product: high sensitivity with high overpressure and burst pressure.

The new sensors have an amplified compensated digital or analog output for reading pressure over the full-scale pressure span in the ultra-low pressure range of ±2.5 mbar to ±40 mbar [±1 inH₂O to ±30 inH₂O].  As a result, the units can address many low pressure industrial and medical applications including the more difficult clogged filter detection (industrial) and ventilators (medical).

The overpressure ranges are above 135 inH2O (336 mbar) and burst pressures are  above 415 inH2O (1034 mbar) for these ultra low pressure units allowing them to handle a wide range of application conditions.

Using a Total Error Band (TEB) approach to specify the sensor’s accuracy over the compensated temperature range, users do not have to calculate the total effect of individual errors that could occur in their applications. The TEB for the HSC Series varies between ±1 %FSS and ±3 %FSS (depending on the pressure range), while the TEB for the SSC Series varies between ±2 %FSS and ±5 %FSS (depending on the pressure range).

Honeywell claims an industry-leading accuracy of ±0.25 % FSS BFSL (Best Fit Straight Line) for the new sensors.

For more information about Honeywell TruStability Ultra-Low Pressure Sensors, click here.

Honeywell’s Zephyr Airflow Sensors Now Offered with an Analog Output

The normal progression for sensor products has historically been: introduce an analog sensor and then a digital version. Honeywell has reversed the order with Zephyr Airflow Sensors. Since introducing the digital version in April, the company recently launched an analog version.  Designed for customers that are either replacing legacy analog parts or who prefer to operate with an analog sensor, the analog version has the same high accuracy (2.5%) and packaging as the digital versions. The fully calibrated and temperature compensated units target the measurement of the mass flow of air and other non-corrosive gases in medical and industrial applications.

For more information on Honeywell’s Zephyr Analog Airflow Sensors, click here.

Honeywell Extends SMART Position Sensor to 225 mm

Adding to its SMART Position Sensor 75 mm Linear Configuration, Honeywell’s SMART Position Sensor 225 mm Linear Configuration’s simple, non-contact design eliminates mechanical failure mechanisms, reduces wear and tear, improves reliability and durability, enhances operational efficiency and safety, and minimizes downtime. Also, the adaptable, non-contacting design allows customers to eliminate unnecessary connections for installation, reducing installation time and components

The sensors two output options include analog or digital for use in control systems requiring an RS232-type interface with a 57.6 kbits/s baud rate. The device accurately measures values down to 0.14 mm [0.0055 in] analog and 0.0035 mm [0.000137 in] digital.

For more information about Honeywell’s SMART Position Sensor 225 mm Linear Configuration, click here.

Honeywell Zephyr Digital Airflow Sensors Provide 2.5% Accuracy

Using a microelectromechanical system (MEMS) sense die and an Application Specific Integrated Circuit (ASIC) for signal conditioning and interfacing, Honeywell’s Zephyr Digital Airflow Sensors achieve 2.5% accuracy. The fully calibrated and temperature compensated HAF Series are available in standard flow ranges of ±200 SCCM and ±1000 SCCM.

 The MEMS design has thermally isolated heater and temperature sensing elements, providing a fast response to air or gas flow.  The ASIC provides an I²C digital output to simplify interfacing to microcontrollers. A 3.3 Vdc voltage option, low power requirements and small size make the units well suited for battery-powered and portable applications.

 For more information about Honeywell Zephyr™ Digital Airflow Sensors, click here.