RS485 Output Silicon Pressure Transmitter


RS485 Output Pressure Transmitter | PX409-485_PXM409-485

RS485 Output Pressure Transmitter

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  • Up to 640 Readings/Second
  • Micro-Machined Silicon Sensor
  • 316L SS Wetted Parts
  • High ±0.08% BSL Accuracy
  • RS485 and Analog Outputs
  • Excellent Long Term Stability
  • M12 Connection
  • Ruggedized with Secondary Containment
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FREE OMEGA™ Downloadable Software!
Free OMEGA PC software takes the data from the transmitter directly to the digital domain, turning your laptop or Windows® tablet into a virtual meter, chart recorder, or data logger. Also included are .NET APIs and a command set for command-line access.
Download your free copy today!
Note: RS485 to PC interface is required, sold separately

See the Digital Transducer Software in Action

New OMEGA office in Singapore
Charting Window – The addition of a charting window allows you to see your data graphed in real time. The Y axis is configurable to allow simultaneous graphing of multiple engineering units. You can output the image of your data to a png file.

Channels Window - Display data from all of your sensors simultaneously. Each channel has configurable user alarms, three data filters, tare, resettable low/high indication, and sample rates ranging from 30 minutes to 640Hz.

Logging Window – A new xls filetype output option presents preformatted data for readability. In addition, Live Statistics are displayed, including the sensor information, the start/stop time, the number of samples taken, the current reading, and the High/Low readings. With the logging window, you can capture your data for later analysis.

The PX409 RS485 Series is an industrial RS485 Silicon Pressure sensor. Use stand-alone for up to 640 Hz sampling rate, or connect up to 16 units in an independent multidrop RS485 network at 1 Hz overall bus sampling rate. Interface to the sensor using command line access, or use OMEGA’s Free PC software to chart, log, display, and output data for analysis. An additional analog output (0 to 5V, or 4 to 20 mA) provides even more flexibility. The micro-machined silicon design is ideal for pressure or level applications in laboratory, test platforms, or bio/pharmaceutical applications as well as industrial applications that require a rugged, high accuracy transmitter that can transmit over long distances. The micro-machined silicon sensor provides a very stable transmitter with exceptional high accuracy of ±0.08% and a broad compensated range of -29 to 85°C (-20 to 185°F). The modular construction allows for fast delivery of most configurations and fittings.

3 BLUE (B) RS485
4 BROWN (A) RS485

Supply: 12 to 36 Vdc (when using mA output, derate using formula in operating temperature section)
Maximum Loop Ω: (Supply-9) x 50
Accuracy: 0.08% BSL (linearity, hysteresis and repeatability combined)
Resolution: Up to 5.5 significant figures
Zero Balance: ±0.5% FS typical 1% maximum (1% typical, 2% maximum for 2.5 psi and below)
Span Setting: ±0.5% FS typical 1% maximum (1% typical, 2% maximum for 2.5 psi and below). Calibrated in vertical direction with fitting down
Temperature Compensation (Over Compensated Range):
    Span: Range > 5 psi: ±0.5%; Range ≤ 5 psi: ±1.0%
    Zero: Range > 5 psi: ±0.5%; Range ≤ 5 psi: ±1.0%
Minimum Isolation: 100 MΩ @ 50 Vdc case to sensor, 2 MO @ 50 Vdc case to output terminations
Pressure Cycles: 1 million, minimum
Long Term Stability (1-Year): ±0.1% full scale typical
Power Consumption
  -5V: 0.65 W typical
  -I: 1.25 W maximum
Secondary Containment
  Gage/Vacuum/Compound Pressure:
    10 inH2O to 5 psi: to 1000 psi
    15 to 1000 psi: to 3000 psi
    1500 to 5000 psi: to 10,000 psi
  Absolute/Barometric Pressure:
    5 to 1000 psia: to 6000 psia
    1500 to 5000 psia: to 10,000 psia
  Gage/Vacuum/Compound Pressure:
    10 inH2O: 10 times span
    1 psi: 6 times span
    2.5 psi to 1000 psi: 4 times span
    1500 psi to 5000 psi: 7250 psi maximum
  Absolute/Barometric Pressure:
    5 psia: 6 times span
    15 psia to 1000 psia: 4 times span
    1500 to 5000 psia: 7250 psia maximum
Secondary Containment
  Gage/Vacuum/Compound Pressure:
    25 to 350 mb: to 70 bar
    1 to 70 bar: to 200 bar
    100 to 350 bar: to 700 bar
  Absolute/Barometric Pressure:
    350 mb to 70 bar: to 400 bar
    100 to 350 bar: to 700 bar
  Gage/Vacuum/Compound Pressure:
    25 mb: 10 times span
    70 mb: 6 times span
    170 mb to 100 bar: 4 times span
    175 to 350 bar: 500 bar maximum
  Absolute/Barometric Pressure:
    350 mb to 100 bar Absolute: 4 times span
    175 to 350 bar Absolute: 500 bar maximum
Wetted Parts: 316L stainless steel
Weight: 200 g (7 oz)
Operating Temperature Range: -40 to 85°C (-40 to 185°F); when using mA output; maximum ambient temperature = 106 + (0.038) R-(2.1)V where R = Loop Ω and V = Vsupply
Compensated Temperature
    Ranges >5 psi: -29 to 85°C (-20 to 185°F)
    Ranges ≤5 psi: -17 to 85°C (0 to 185°F)
    Ranges > 350 mb: -29 to 85°C (-20 to 185°F)
    Ranges ≤ 350 mb: -17 to 85°C (0 to 185°F)
Pressure Port:
  Imperial: ¼–18 NPT male
  Metric: G-¼ male
A to D Conversion: 24-bit
Output: RS485 digital with discrete analog (choose 0 to 5 Vdc or 4 to 20 mA)
DAC Conversion: 300 Hz at 16 bit
  Multidrop Mode: Overall Bus rate: DC to 1 update per second typical
  Standalone Mode: DC to 640 updates per second
ESD Protection: Tested to 4 kV to case and shielded wire
  Digital Outputs: Protection device rated to ±13 kV
  Analog Output: Protection device rated:
    Contact: ±8 kV min, ±30 kV max
    Air: ±15 kV min, ±30 kV max
Electrical Termination: 8-pin M12 type A male with shield pin connection (IEC61076-2-101); female M12 connector M12.8-S-F-FM with screw terminals sold separately
CE Compliant:
  Emissions: Meets industrial EN61326.
  Susceptibility (10 V/m): Digital: ±0.009%, 0 to 5 Vdc: ±0.18%, 4 to 20 mA: ±0.006%; tested using 7.6 m (25') shielded 6 conductor cable
Environmental Protection: IP65
RS485 (Non-Isolated):
  Protocol: OMEGA command structure (provided), addressable or non addressed stand-alone
  Unit Load: 1/8
  Standalone and Addressed Multidrop Modes Recommended Cable: Belden 9843 or equivalent
  For Stated EMC Performance: Tie drain wire to shield connection on PX409-485 side, and tie drain to earth ground on supply side
  Maximum Number of Units on One RS485 Bus: 16 units software-enabled 120Ω termination resistor
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