Honeywell Heavy Duty Pressure Transducers PX3 Series Installation Guide

Honeywell Heavy Duty Pressure Transducers PX3 Series

Installation Instructions

General InformationHoneywell’s PX3 Series Pressure Transducers use piezoresistive sensing technology with ASIC (Application Specific Integrated Circuit) signal conditioning. The PX3 Series is calibrated and temperature compensated from -40°C to 125°C [-40°F to 257°F].

The PX3 Series is not recommended for use with media involving water, saturated air such as steam and vapor, and ammonia.

Table 1. Performance Specifications (At 25°C [77°F] and under unless otherwise noted.)

Characteristic Parameter
Operating temperature range1 -40°C to 125°C [-40°F to 257°F]
Storage temperature range1 -40°C to 125°C [-40°F to 257°F]
Compensated temperature range -40°C to 125°C [-40°F to 257°F]
Total Error Band2:

-20°C to 85°C [-4°F to 185°F]

<-20°C, >85°C [<-4°F, >185°F]

±1.0 %FSS

±2.0 %FSS

Accuracy BFSL3 ±0.25 %FSS
Response time <2 ms (10% to 90% step change in pressure)
Turn on time4 <7 ms
EMC rating5:

surge immunity (all leads) electrostatic discharge radiated immunity fast transient burst immunity to conducted disturbances radiated emissions radiated immunity: ratiometric (voltage) output 4 mA to 20 mA (current) output

 ±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 dBmV (30 MHz to 230 MHz), 47 dBmV (230 MHz to 1000 MHz) per CISPR 11

 200 V/m per ISO 11452-2

140 V/m per ISO 11452-2

Insulation resistance6: ratiometric voltage output current output >100 MOhm at 1500 Vdc

>100 MOhm at 1000 Vdc

Dielectric strength <1 mA at 1500 Vac (1 min) or 1800 Vac (1 s)
Load resistance6: ratiometric voltage output current output >5 kOhm

(Vin – 8) x 50 Ohm

Life >10 million full scale pressure cycles over the calibrated pressure range
  1. Dependent on seal material..
  2. 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.
  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.
  4. Turn on time: Duration from power applied until first valid output for voltage output. Typical value for 4 mA to 20 mA output.
  5. Tested using 1,5 m [59.1 in] long cable.
  6. Tested in dry, non-ionized air.

Table 2. Electrical Specifications

Characteristic Parameter
Supply voltage:ratiometric voltage output: 5 Vdc3.3 Vdc current output:

-40°C to 100°C >100°C to 125°C

5 Vdc ±0.25 Vdc

3 Vdc ±0.25 Vdc

 8 Vdc to 30 Vdc

8 Vdc to 25 Vdc

Over voltage and reverse voltage: ratiometric voltage output current output ±16 Vdc

±35 Vdc

Current consumption: 5 Vdc supply 3.3 Vdc supply 3.0 mA max.

1.6 mA to 2.1 mA

Short circuit protection yes
Nominal output transfer function: 5 Vdc supply 3.3 Vdc supply 8 Vdc to 30 Vdc supply 0.5 Vdc to 4.5 Vdc (ratiometric to supply)

0.33 Vdc to 2.97 Vdc (ratiometric to supply) 4 mA to 20 mA

Figure 1. TEB Definition and Temperature Performance

Table 3. Pressure Reference Definitions

Pressure Reference Definition
Absolute Output is calibrated to be proportional to the difference between applied pressure and a fixed reference to perfect vacuum (absolute zero  pressure).
Sealed gage1 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 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 2.)

Sealed gage option only available in pressure ranges at or above 8 bar | 100 psi.

Figure 2. Ratiometric Output Option AA for 100 psi, Absolute vs Sealed Gage

Table 4. Pressure Ratings

bar psi
Operating Pressure Over- pressure Burst Pressure Operating Pressure Over- pressure Burst Pressure
1 5 8 15 70 115
1.6 5 8 30 150 250
2 10 17 50 250 400
2.5 10 17 100 450 750
4 17 27 150 450 750
6 31 51 174 450 750
8 31 51 200 450 1150
10 31 51 250 450 1150
12 31 51 300 1000 1500
16 32 80 500 1000 1500
20 69 103 600 1000 1500
25 69 103 667 1000 1500
30 69 103 700 1000 1500
35 69 103
40 69 103
46 69 103
50 69 103

Diagnostics Mode (For Ratiometric Voltage Output Only)

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 3 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 would exceed the upper rail of 97.5%.)

Figure 3. Analog Output with Diagnostics

Table 5. Output Transfer Function Codes

Fault Condition Analog Diagnostic Rail
EEPROM Corrupt below lower rail
Sensor Bridge Open (any element) above upper rail
Sensor Bridge Short (any element) above upper rail
Low supply voltage below lower rail
Loss of ground connection above upper rail

Table 6. Environmental and Mechanical Specifications

Characteristic Parameter
Shock: threaded ports tube port 100 G per MIL-STD-202G, Method 213B, Cond. F (at 25°C [77°F])

100 G per MIL-STD-202F, Method 213B, and Condition C

Vibration: threaded ports tube port 20 G sweep, 10 Hz to 2000 Hz (at 25°C [77°F])

10 Hz to 55 Hz, 2 mm displacement, tested as per IEC 60068-2-6; Test FC. (at 25°C [77°F])

Ingress protection:

Metri-Pack 150 electrical connector cable harness electrical connector DIN electrical connector


IP65, IP67, IP69K IP65

Ambient humidity 0 %RH to 95 %RH, non-condensing
External freeze/thaw resistance >6 cycles from -30°C to 50°C [-22°F to 122°F]
Wetted materials: threaded ports external seals for ports tube port braze filler internal O-ring media seal sensing element and substrate adhesives brass C36000; lead (Pb) content: 3.7% max. nitrile copper UNS C12200; lead (Pb) free silver and copper alloy seal material based on application (see seal material media compatibility options below) alumina, glass, silicon epoxy
Internal O-ring material media compatibility1: HNBR (option H)silicone (option S) refrigerants, engine oil, petroleum-based hydraulic fluid dry air
Electrical connector material PBT 30% GF

Honeywell can assist with selecting suitable O-ring seal material for the media based on the seal manufacturer’s recommendation. The customer should test the compatibility with the media to ensure that it is correct for the application.


Ensure that the temperature of the brass port and plastic connector is maintained below 125°C during flame brazing.Exposure to temperatures higher than 125°C can cause permanent product damage and can compromise ingress protection leading to short circuits.Failure to comply with these instructions may result in product damage.


  • Ensure torque specifications are determined for the specific application. Values provided are for reference only. (Mating materials and thread sealants can result in significantly different torque values from one application to the next.)
  • When using mating parts made of stainless steel, use a thread sealant with anti-seize properties to prevent thread galling. Ensure the sealant is rated for the application.
  • Use appropriate tools (such as an open ended wrench or deep well socket) to install transducers.
  • Always hand-start transducers into the hole to prevent cross threading and damage.
  • Ensure that torque is not applied to the electrical connector.
  • Ensure that the proper mating electrical connector with a seal is used to connect the transducer. Improper or damaged seals can compromise ingress protection, leading to short circuits.

Failure to comply with these instructions may result in product damage.

CAUTION: PRODUCT DAMAGE DUE TO PARTICULATES AND SATURATED AIREnsure that filters and dehumidifiers are used upstream of the transducers to keep media flow free of large particulates and condensed moisture. PX3 Series transducers are dead-end devices. Particulate accumulation may clog the port or damage the diaphragm. Condensing moisture may affect sensor output and lower insulation resistance.

Failure to comply with these instructions may result in product damage.

CAUTION: PRODUCT DAMAGE DUE TO CONDUCTIVE MEDIAEnsure sensor is not used with conductive or ionic media. These media can affect sensor output and lower insulation resistance.

Failure to comply with these instructions may result in product damage.

Figure 4. Metri-Pack Mounting Dimensions (For reference only. mm/[in].) E

Figure 5. DIN Mounting Dimensions (For reference only. mm/[in].) E

Figure 6. Cable Harness Mounting Dimensions Shown by Pressure Port Type (For reference only. mm/[in].) E

WARNING: PERSONAL INJURYDO NOT USE these products as safety or emergency stop devices or in any other application where failure of the product could result in personal injury.Failure to comply with these instructions could result in death or serious injury.


Honeywell warrants goods of its manufacture as being free of defective materials and faulty workmanship during the applicable warranty period. Honeywell’s standard product warranty applies unless agreed to otherwise by Honeywell in writing; please refer to your order acknowledgement or consult your local sales office for specific warranty details. If warranted goods are returned to Honeywell during the period of coverage, Honeywell will repair or replace, at its option, without charge those items that Honeywell, in its sole discretion, finds defective. The foregoing is buyer’s sole remedy and is in lieu of all other warranties, expressed or implied, including those of merchantability and fitness for a particular purpose. In no event shall Honeywell be liable for consequential, special, or indirect damages.

While Honeywell may provide application assistance personally, through our literature and the Honeywell web site, it is buyer’s sole responsibility to determine the suitability of the product in the application.Specifications may change without notice. The information we supply is believed to be accurate and reliable as of this writing. However, Honeywell assumes no responsibility for its use.

For more informationHoneywell Advanced Sensing Technologies services its customers through a worldwide network of sales offices and distributors. For application assistance, current specifications, pricing or the nearest Authorized Distributor, visit our website or call:

Asia Pacific +65 6355-2828Europe +44 (0) 1698 481481USA/Canada +1-800-537-6945

Honeywell Advanced Sensing Technologies830 East Arapaho RoadRichardson, TX


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