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Submersible Pressure Transducers

Item# PXM709GW


Submersible Pressure Transducers PXM709GW PXM709GW
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  • Precision Micromachined Silicon Sensor
  • 5-Point NIST Traceable Calibration
  • Lightning/Surge Protection Available on Amplified Models
  • 316L SS Case and Diaphragm
  • Fused Polyurethane Cable
  • mV/V, 0-10 Vdc, or 4-20 mA Output
  • Premium Temperature Performance
  • Broad Compensated Temperature Range
  • 0.20% Standard Accuracy or Optional 0.08% High Accuracy Models for Precise Depth Measurement
  • Available in Gage Pressure: Vented to Atmosphere Through the Cable Sealed Gage: Not Vented to Atmosphere or Absolute Pressure: Vacuum Reference
  • Reverse Polarity Protected
  • Protective Nose Cone and Desiccant Available
  • Standard or Custom Cable Lengths
5 Year Warranty


Product Specs

  • Accuracy Value 100 mV @ 10 Vdc (Ratiometric 5 to 10 Vdc)
  • Repeatability Standard ±0.20% BSL or high accuracy
  • Vibration ±20 g
  • Shock 50 g
  • Zero Balance ± 0.5% full scale typical

The PXM709GW Series submersible depth transducers are designed to make precision level or depth measurements in fresh water or liquids compatible with 316 SS reliably for years in harsh industrial environments. Applications include Level Monitoring and Control, Depth Measurement, Surface Water Monitoring, Tank Level, Well Water Depth, Waste Water Applications,Dewatering Installations and Construction Bypass. Inconel® models are also available for oceanic research and highly corrosive or salt water applications. Consult Sales for availability. The PXM709 series has the proven Omega micromachined silicon technology as its core sensor. The Piezoresistive technology uses precision solid state strain gages molecularly embedded into a highly stable silicon wafer. The silicon is mounted in a sealed chamber and protected from the environmental fluids by a pressure sensitive stainless steel diaphragm. A very small volume of silicone oil transfers the pressure from the diaphragm to the silicon sensor. The cable is molded onto the case using a unique high pressure, high temperature system to assure the best possible quality seal for long life and durability. This technology produces a very rugged, high stability sensor with exceptional accuracy, minimal thermal effects and long term reliability.

COMMON SPECIFICATIONS
Approvals: RoHS compliant
Accuracy (Combined Linearity, Hysteresis and Repeatability): Standard ±0.20% BSL or high accuracy, option “HH”, ±0.08% BSL
Setting Accuracy Zero: ± 0.5% full scale typical, ± 1.0% full scale maximum (± 1.0% full scale typical, ± 2.0% full scale maximum for ranges = 170 mb)
Setting Accuracy Span: ± 0.5% full scale typical, ± 1.0% full scale maximum (± 1.0% full scale typical, ± 2.0% full scale maximum for ranges = 170 mb) calibrated in vertical direction with fitting down
Minimum Resistance Between Transducer Body and Any Wire: 100M Ω @ 50 Vdc (before surge protection)
Pressure Cycles: 1 million minimum
Long Term Stability (1 Year.): ±0.1% full scale typical
Operating Temperature: -18 to 79°C (0 to 175°F) with no solid freeze
Compensated Temperature: -1 to 32°C (30 to 90°F)
Thermal Effects (Over Compensated Range):
Zero Balance:
    Ranges >350 mb: ±0.3% span
    Ranges ≤350 mb: ±0.5% span
Span Setting:
    Ranges >350 mb: ±0.3% span
    Ranges ≤350 mb: ±0.5% span
Bandwidth: DC to 1 kHz typical
Response Time: 500 usec, 0 to 90% step change
CE Compliant: Meets EN 61326-1: 2006 for industrial locations [certified with 91 m (300')]
Lightning Protection Option (if included): Integral lightning surge protection to IEC-61000-4-5 (Level 4)
Shock: 50 g, 11 ms, half-sine horizontal and vertical axis
Vibration: ± 20 g
Overpressure
    Gage and Sealed Gage:
    25 mb: 10 times span
    70 mb: 6 times span
    170 mb to 70 bar: 4 times span
Absolute: 350 mba: 6 times span ranges
    >350 mba: 4 times span
Containment Pressure
    Gage Pressure:
    25 to 350 mb: To 70 bar
    1 to 70 bar: To 200 bar
    Absolute Pressure: 350 mb to 70 bar: To 400 bar
Wetted Parts: 316L stainless steel
Body Material: 316L stainless steel
Pressure Connection: 9/16-18 UNF female
Transducer Weight: 285 g (10 oz) typical depending upon configuration
Cable Construction: Polyurethane jacket with double Kevlar® reinforcing stringers, fused to case, with large vent tube
Cable Pull Strength: 109 kg (240 lb)
Cable Conductors: Four 24 AWG (19/36 stranded tinned copper) with ETFE insulation; meets MIL-W-22759/16 & SAE AS22759/16
Cable Sealing: Fused to case via molded Neoprene boot rated to 610 m (2000') depth
Standard Cable Lengths (meters): 3, 4.6, 6, 7.5, 9, 12, 15, 18, 20, 22.5, 30.5, 45, and 90 for other lengths contact factory for lead times (see page 6)

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