• Six industry-standard pressure port types, including a
tube port which provides for hermetically-sealed process
connection
POTENTIAL APPLICATIONS
• Industrial: Refrigerant pressure monitoring in HVAC/R
systems; air compressor system pressure
• Transportation: Air system monitoring; hydraulic oil pressure
monitoring
The PX3 Series is not recommended for use with media
involving water, saturated air such as steam and vapor, and
ammonia.
PORTFOLIO
Honeywell’s PX3 Series joins the PX2 Series, MLH Series, and
SPT Series heavy duty pressure transducers.
VALUE TO CUSTOMERS
• Total Error Band (TEB) ±1.0 %FSS from -20°C to
85°C: Provides the most comprehensive, clear and
meaningful indication of the sensor’s true measurement
performance over a specified temperature range; small
error promotes system uptime and efficiency. (See Figure 1.)
Figure 1. TEB Definition and Temperature Performance
All Possible Errors
Offset
Full Scale Span
Pressure Non-Linearity
Pressure Hysteresis
Pressure Non-Repeatability
Thermal Effect on Offset
Thermal Effect on Span
Thermal Hysteresis
Total Error Band (%FSS)
3
2
1
0
-1
-2
-3
-40°C
[-40°F]
-20°C
[-4°F]
0°C
[32°F]
Accuracy
BFSL
Total
Error
Band
Total Error Band
Temperature (°C [°F])
85°C
[185°F]
125°C
[257°F]
• High insulation resistance and dielectric strength: Protect
the user and sensor in high over-voltage situations,
and ensures that the device is compliant with industry
standards.
• High EMC performance: Operates reliably in the presence
of electro-magnetic fields, such as near wireless signals, RF
communication, and electrical devices.
• High external freeze/thaw resistance: Survives exposure to
frost, commonly found in refrigeration systems. (See Figure 2.)
Sensing and Internet of Things
Heavy Duty Pressure Transducers
Table 1. Electrical Specifications
Characteristic
Supply voltage:
5 Vdc
3.3 Vdc
Over voltage and reverse voltage
Current consumption:
5 Vdc supply
3.3 Vdc supply
Short circuit protection
Nominal output transfer function:
5 Vdc supply
3.3 Vdc supply
Parameter
±0.25 Vdc
±0.25 Vdc
±16 Vdc
3.0 mA max.
1.6 mA to 2.1 mA
yes
PX3 Series, 1 bar to 50 bar | 15 psi to 700 psi
0.5 Vdc to 4.5 Vdc (ratiometric to supply)
0.33 Vdc to 2.97 Vdc (ratiometric to supply)
Table 2. Performance Specifications (At 25°C [77°F] and under unless otherwise noted.)
Characteristic
Operating temperature range
1
Storage temperature range
1
Compensated temperature range
Total Error Band
2
:
-20°C to 85°C [-4°F to 185°F]
<-20°C, >85°C [<-4°F, >185°F]
Accuracy BFSL
3
Response time
Turn on time
4
EMC rating
5
:
surge immunity (all leads)
electrostatic discharge
radiated immunity
fast transient burst
immunity to conducted disturbances
radiated emissions
radiated immunity
Insulation resistance
Dielectric strength
Load resistance
Life
1
2
Parameter
-40°C to 125°C [-40°F to 257°F]
-40°C to 125°C [-40°F to 257°F]
-40°C to 125°C [-40°F to 257°F]
±1.0 %FSS
±2.0 %FSS
±0.25 %FSS
<2 ms (10% to 90% step change in pressure)
<7 ms
±1000 V line to ground per IEC 61000-4-5
±4 kV contact, ±8 kV air per IEC 61000-4-2
10 V/m (80 MHz to 1000 MHz) per IEC 61000-4-3
±1 kV per IEC 61000-4-4
3 V per IEC 61000-4-6
40 dB (30 MHz to 230 MHz), 47 dB (230 MHz to 1000 MHz) per CISPR 11
200 V/m per ISO 11452-2
>100 MOhm, 1500 Vdc (in dry, non-ionized air)
AC1500V, 1 min. or AC1800V, 1 s (in dry, non-ionized air)
>5 kOhm
greater than 10 million full scale pressure cycles over the calibrated pressure range
Dependent on external and internal seal and cable jacket materials. See Table 5 and Figure 5 for temperature range details.
Total Error Band: The maximum deviation from the ideal transfer function over the entire compensated temperature and pressure range. Includes all
errors due to offset, full scale span, pressure non-linearity, pressure hysteresis, pressure non-repeatability, thermal effect on offset, thermal effect
on span, and thermal hysteresis. See Figure 1.
3
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 pressure non-repeatability. See Figure 1.
4
Turn on Time: Duration from power applied until first valid output.
5
Tested using 1.5 m [59.1 in] cable.
Table 3. Pressure Reference Definitions
Pressure Reference
Absolute
Definition
Output is calibrated to be proportional to the difference between applied pressure and a fixed reference to
perfect vacuum (absolute zero pressure).
Sensor construction is identical to the absolute version with a built in reference at zero pressure in order to
minimize measurement error over temperature. The output is calibrated to be proportional to the difference
Sealed gage
1
between applied pressure and a reference of 1 standard atmosphere (1.013 barA | 14.7 psiA). Example: 100
psi sealed gage has a calibrated pressure range from 14.7 psi absolute to 114.7 psi absolute. (See Figure 3.)
1
Sealed gage option only available in pressure ranges at or above 8 bar | 100 psi.
2
Sensing and Internet of Things
Heavy Duty Pressure Transducers
Figure 3. Ratiometric Output Option AA for 100 psi,
Absolute vs Sealed Gage
5
4.5
4
3.5
PX3 Series, 1 bar to 50 bar | 15 psi to 700 psi
Diagnostics Mode
The PX3 Series diagnostics mode allows the device to
indicate when internal or external faults occur. If an internal
fault occurs, the output will rail to the preset lower or upper
limit values shown in Figure 4 and Table 5.
External faults will result in the sensor’s output exceeding
those preset limits (lower or upper). (For example, if the
external sensor ground (signal) were lost, the sensor output
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