The TruStability® Standard Accuracy Silicon Ceramic (SSC) Series is a piezoresistive silicon pressure sensor offering a ratiometric analog or digital output for reading pressure over the specified full scale pressure span and temperature range.
The SSC Series is fully calibrated and temperature compensated for sensor offset, sensitivity, temperature effects, and nonlinearity using an on-board Application Specific Integrated Circuit (ASIC). Calibrated output values for pressure are updated at
approximately 1 kHz for analog and 2 kHz for digital.
The SSC Series is calibrated over the temperature range of -20 °C to 85 °C [-4 °F to 185 °F]. The sensor is characterized for operation from a single power supply of either 3.3 Vdc or 5.0 Vdc.
These sensors measure absolute, gage, or differential pressures. The absolute versions have an internal vacuum reference and an output value proportional to absolute pressure. Gage versions are referenced to atmospheric pressure and provide an output proportional to pressure variations from atmosphere. Differential versions allow measurement of pressure between two pressure ports.
The TruStability® pressure sensors are intended for use with non-corrosive, non-ionic gases, such as air and other dry gases. Available options extend the performance of these sensors to non-corrosive, non-ionic liquids for pressure ranges above 40 mbar | 4 kPa | 20 inH2O.
All products are designed and manufactured according to ISO 9001 standards.
Features and Benefits
Proprietary Honeywell technology
Combines high sensitivity with high overpressure and burst pressure while providing industry leading stability-performance factors that are difficult to achieve in the same product; this gives the customer more flexibility in sensor implementation and reduces the customer design requirements for protecting the sensor without sacrificing the ability to sense very small changes in pressure.
PROTECTED BY MULTIPLE GLOBAL PATENTS Industry-leading long-term stability
Even after long-term use and thermal extremes, the sensor's stability remains best in class:
• Minimizes system calibration needs.
• Improves system performance.
• Helps support system uptime by minimizing the need to service or replace the sensor during its application life.
Total Error Band (TEB)
Honeywell specifies TEB-the most comprehensive, clear, and meaningful measurement-that provides the sensor's true performance over a compensated range of -20 °C to 85 °C [-4 °F to 185 °F] (see Figure 1):
• Minimizes individually testing and calibrating every sensor, decreasing manufacturing time and process costs.
• Improves system accuracy.
• Provides enhanced sensor interchangeability-there is minimal part-to-part variation in accuracy
Industry-leading accuracy
Extremely tight accuracy of ±0.25 %FSS BFSL (Full Scale Span Best Fit Straight Line) reduces software needs to correct system inaccuracies, minimizing system design time:
• Avoids additional customer calibration.
• Helps to improve system efficiency.
• Often simplifies software development.
High burst pressures
• Promotes system reliability and reduces potential system downtime.
• Can simplify the design process.
High working pressure ranges
Allows ultra-low pressure sensors to be used continuously well above the calibrated pressure range.
Industry-leading flexibility
Modular, flexible design with many package styles (with the same industry-leading stability), pressure ports, and options simplify integration into the device manufacturer's application.
Wide variety of pressure ranges
From ±1.6 mbar to ±10 bar | ±160 Pa to ±1 MPa | ±0.5 inH2O to ±150 psi provide support for many unique applications.
Meets IPC/JEDEC J-STD-020D.1 Moisture Sensitivity Level 1 requirements
• Allows the customer to avoid the thermal and mechanical damage during solder reflow attachment and/or repair that lesser rated products would incur.
• Allows unlimited floor life when stored as specified (<30 ºC/85 %RH), simplifying storage and reducing scrap.
• Never requires lengthy bakes prior to reflow.
• Stable and usable shortly after reflow process allows for lean manufacturing.
OPTIONAL Internal diagnostic functions
• May reduce the need for redundant sensors in the system.
• Detects most internal failures including burst sensors.
Energy efficient
Extremely low power consumption (less than 10 mW, typ.):
• Reduces system power requirements.
• Enables extended battery life.
• Optional sleep mode available upon special request.
Output: ratiometric analog; I 2 C- or SPI-compatible 14-bit digital output (min. 12-bit sensor resolution)
Accelerates performance through reduced conversion requirements and the convenience of direct interface to microprocessors.
Small size
Miniature 10 mm x 10 mm [0.39 in x 0.39 in] package is very small when compared to many board mount pressure sensors:
• Occupies less area on the PCB.
• Typically allows for easy placement on crowded PCBs or in small devices.
REACH and ROHS compliant
Liquid media option
• Provides robustness in environments with condensing humidity.
• Compatible with a variety of non-ionic fluids.
• Available for pressure ranges above 40 mbar | 4 kPa | 20 inH2 0.
Potential Applications
MEDICAL
• Airflow monitors
• Anesthesia machines
• Blood analysis machines
• Gas flow instrumentation
• Kidney dialysis machines
• Oxygen concentrators
• Pneumatic controls
• Respiratory machines
• Sleep apnea equipment
• Ventilators
• Spirometers
• Nebulizers
• Hospital room air pressure
INDUSTRIAL
Barometry
• Flow calibrators
• Gas chromatography
• Gas flow instrumentation
• HVAC
• Life sciences
• Pneumatic control
• VAV (Variable Air Volume) control
• Clogged HVAC filter detection
• HVAC transmitters
• Indoor air quality
| Analog Operating Specifications |
| table 5. Analog operating Specifications |
| Characteristic |
Min. |
typ. |
Max. |
Unit |
Supply voltage (Vsupply):1, 2, 3
pressure ranges >60 mbar | 6 kPa | 1 psi:
3.3 Vdc
5.0 Vdc
pressure ranges <40 mbar | 4 kPa | 20 inH2O:
3.3 Vdc
5.0 Vdc |
3.0
4.75
3.27
4.95 |
3.3
5.0
3.3
5.0 |
3.6
5.25
3.33
5.05 |
Vdc |
Supply current:
3.3 Vdc
5.0 Vdc
Operating temperature range4
Compensated temperature range5
Startup time (power up to data ready)
Response time
Clipping limit:
upper
lower
Accuracy6
Output resolution
Orientation sensitivity (±1 g):7, 9
pressure ranges <40 mbar | 4 kPa | 20 inH2O
pressure ranges <2.5 mbar | 250 Pa | 1 inH2O |
-
-
-40 [-40]
-20 [-4]
-
-
-
2.5
-
0.03
-
- |
2.1
2.7
-
-
-
1
-
-
-
-
±0.1
±0.2 |
2.8
3.5
85 [185]
85 [185]
5
-
97.5
-
±0.25
-
-
- |
mA
°C [°F]
°C [°F]
ms
ms
%Vsupply
%FSS BFSL8
%FSS
%FSS8 |
1 Sensors are either 3.3 Vdc or 5.0 Vdc based on the catalog listing selected.
2 Ratiometricity of the sensor (the ability of the device output to scale to the supply voltage) is achieved within the specified operating voltage.
3 The sensor is not reverse polarity protected. Incorrect application of supply voltage or ground to the wrong pin may cause electrical failure.
4 Operating temperature range: The temperature range over which the sensor will produce an output proportional to pressure.
5 Compensated temperature range: The temperature range over which the sensor will produce an output proportional to pressure within the specified
performance limits.
6 Accuracy: The maximum deviation in output from a Best Fit Straight Line (BFSL) fitted to the output measured over the pressure range at 25 °C [77 °F]. Includes all errors due to pressure non-linearity, pressure hysteresis, and non-repeatability.
7 Orientation sensitivity: The maximum change in offset of the sensor due to a change in position or orientation relative to Earth's gravitational field.
8 Full Scale Span (FSS): The algebraic difference between the output signal measured at the maximum (Pmax.) and minimum (Pmin.) limits of the pressure range.
(See Figure 4 for ranges.)
9 Insignificant for pressure ranges above 40 mbar | 4 kPa | 20 inH2O.
Tech Specifications
| Description |
Product Attribute |
| Manufacturer |
Honeywell |
| Product Category |
Board Mount Pressure Sensors |
| Pressure Type |
Gauge |
| Operating Pressure |
0 psi to 30 psi
|
| Accuracy |
± 0.25 % FSS |
| Output Type |
Analog |
| Mounting Style |
Through Hole |
| Operating Supply Voltage |
5 Vdc Typ. |
| Port Type |
Manifold Mount, Inner Diameter Seal |
| Package / Case |
SIP-4 |
| Minimum Operating Temperature |
- 40 °C |
| Maximum Operating Temperature |
+ 85 °C |
| Series |
SSC |
| Operating Supply Current |
2.7 mA |
| Port Size |
4.93 mm |
| Supply Voltage - Max |
5.25 V |
| Supply Voltage - Min |
4.75 V |
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