Inertial Aerosystems is introducing a new range of low-cost, board-based, digital integrated pressure transducers manufactured by Honeywell. Designated the the IPT range, the transducers are designed to provide high-accuracy pressure data in an industry-standard SPI digital format. At the centre of these IPTs is a proven Honeywell silicon piezorestive pressure sensor with pressure- and temperature-sensitive elements. These units offer OEMs and systems integrators an economic module for the design of high-precision measurement systems.
When applying the coefficients stored in the onboard EEPROM to the normalised IPT pressure output (24bit) and temperature output (16bit), the IPT yields highly accurate and stable pressure readings over the -40 to +85degC compensated temperature range. Stored correction coefficients in the EEPROM are ready to use, so no additional pressure and temperature calibration is necessary.
This versatile range of IPTs comprises of 18 variants from 1PSIG/PSID to 50PSIA in absolute, gauge and differential pressure ranges. They have 0.04 per cent absolute pressure accuracy and +/-0.10 per cent gauge/differential pressure accuracy over the compensated -40 to 85degC range.
Suitable for use where space and weight are at a premium, the IPT devices can easily be integrated into a wide variety of applications that require high performance in a small package. Weighing less than 10g, they measure approximately 1.4 x 19 x 25mm, with low power consumption. Full operational control is provided via the digital I/O port.
There are many applications for this innovative range, including flow and pressure calibration, air data computers, engine test systems and instrumentation.