INTEGRATED
PRESSURE
TRANSDUCER
Honeywells Integrated Pressure Transducer (IPT) provides high
accuracy pressure data in an industry-standard SPI digital format.
The core of the IPT is a proven Honeywell silicon piezoresistive
pressure sensor with both pressure and temperature-sensitive
elements. The IPT is small and lightweight and can be easily
integrated by the user into a wide variety of applications that require
high performance in a small package. Applying the coefcfi ients
stored in the on-board EEPROM to the normalized IPT pressure
and temperature output yields highly accurate and stable pressure
readings over the -40 to 85C compensated temperature range.
FEATURES AND BENEFITS
APPLICATIONS
HIGH ACCURACY OVER A WIDE
TEMPERATURE RANGE Air Data Computers Meteorology
0.04% FS Total Error Band (absolute
Altimeters Flow and Pressure Calibrators
pressure units) 0.10% FS Total
Cabin Air Pressure Instrumentation and
Error Band (gauge/differential
Analytical Equipment
(1)
pressure) from -40 to +85C.
Engine Test Systems
Research and Developments
Flight Test Systems
DIGITAL SPI OUTPUT INDUSTRY
STANDARD INTERFACE
Ready communication between
Controller/Processor and the IPT.
STORED CORRECTION
COEFFICIENTS IN EEPROM
Ready to use: No additional pressure
and temperature calibration necessary.
No additional signal compensation
needed to achieve a highly
accurate pressure reading.
SMALL AND VERSATILE
3 3
Volume ~ 1 in (16 cm )
Lightweight Less than 10 grams
Media Interface Handles
most dry gas mediaSPECIFICATIONS
(1)
PERFORMANCE
(from -40 to 85C); 0.04%FS absolute; 0.10%FS gauge, differential;
Total Error
0.20%FS 1 psi gauge
Temperature Range Operating -40 to 85C (-40 to 185F); Storage: -55 to 125C (-67 to 257F)
Long Term Stability 0.025% FS max per year typical
MECHANICAL
Pressure Ranges & Type See Ordering Information
(2)
Pressure Units PSI
Media Compatibility Suitable for non-condensing, non-corrosive, and non-combustible gases
(3)
Weight 8.0 grams (absolute); 9.7 grams (gauge, differential)
ELECTRICAL
Output 24-bit pressure value; 16-bit temperature value; 256 x 8 EEPROM configuration
Power Requirements Supply Voltage: 4 to 12 VDC
Current Consumption 6 mA typical, 7.5 mA max
Interface 3.3V SPI (mode 1,1) SCLK 5 Mhz
Sample Rate 166 samples/second
(3)
ENVIRONMENTAL
Overpressure 3x FS
Burst Pressure 3x FS
Mechanical Shock DO-160E Section 7.0, Category A, Figure 7.2, Operational Standard
Thermal Shock Storage Temperature Cycling per JESD22-104, Section 5.0: -55C to +125C
Vibration DO-160E Section 8, Category H, Aircraft Type 2, Aircraft Zones 1 & 2
RoHS Compliant
(1)
Total Error is the sum of worst-case linearity, repeatability, hysteresis, thermal effects, and calibration errors over the operating temperature
range. Accuracy is only achieved after applying the correction coefficients and algorithm as shown in section 3.2. of Users Manual (FS
= Full Scale). For total error calculations of differential units, Full Scale is the pressure difference between the minimum and maximum
pressures. For example, full scale for a 1 psid IPT is 2 psi (-1 to +1 psi). Pressure range 1psi gauge has total error of 0.20% FS.
(2)
After applying the correction coefficients stored in EEPROM, the resultant pressure reading is expressed in PSI (pounds per square inch).
(3)
Not including mounting hardware.
ORDERING INFORMATION
IPT INTEGRATED PRESSURE TRANSDUCER
FULL SCALE PRESSURE RANGE
Absolute Gauge Differential
(1)
0001 N/A 1 PSI 1 PSI
0002 N/A N/A 2 PSI
0005 N/A 5 PSI N/A
0020 20 PSI 20 PSI N/A
0050 50 PSI N/A N/A
TYPE P1 PRESSURE P2 PRESSURE
A Absolute 0 (vacuum) to FS n/A
G Gauge Reference to FS Reference
D Differential +FS to -FS rel. to P2 +FS to -FS rel. to P1
DIGITAL INTERFACE VOLTAGE
33 3.3 Volts
POWER SUPPLY
R Regulated, 4-12Vdc
OPTIONS
(4)
A Demonstration Kit
E Certificate of Conformance
IPT 0020 A 33 R A
(4)
Demonstration kit includes RS-232 Cable, Demo Board, AC adapter, MS Windows Software, and Users Manual.