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The PX709GW Series submersible level/depth transducers and transmitters 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. They are also ideal for environmental monitoring of job sites and field locations. their 25mm (1.0″) dia. fits most down hole well applications.

The PX709GW series has the proven Omega MicroMachined silicon technology as its core sensor. The Piezoresistive technology uses precision solid state strain gauges 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.

Weatherproof enclosures are also available to easily terminate your transmitter at your control location. The enclosures have fittings to hold the desiccant and locations to make all your connections. They are also available with Lightning/Surge protection to protect your wiring and instruments. Protected models are available for 4-20 mA outputs or the amplified 0-5 or 0-10 Vdc outputs. 

Omega has developed a Modular Manufacturing System so we can deliver almost any combination of pressure type, electrical output, pressure range and cable length with or without internal lightning/surge protection in 1-2 Weeks!

3 x Pressure Reference Types: Gauge pressure (vented through the cable), Sealed gauge pressure, Absolute pressure

4 x Electrical Outputs: mV/V, 0-5Vdc, 0-10Vdc, or 4-20 mA 

Pressure Ranges: from 0-10 inH₂O (0-250 mmH₂O) to 0-1000 psi (0-703 mH₂O) 

The Standard cable length is 10 ft (3 m) and optional lengths are available up to 300 ft (91m).

SPECIFICATIONS PX709GW Series 

Accuracy: Standard ±0.20% FS, BSL, Linearity, Hysteresis and Repeatability Combined 

         High Accuracy Option “HH” ±0.08% BSL

Operating Temperature: -18 to 79°C (0 to 175°F) with no solid freeze.

Compensated Temperature Range: -1 to 88°C (30 to 90¾F)

Thermal Effects (Over Compensated Temperature Range):

Zero Balance:

   Ranges > 5 psi (350 mbar): ±0.3% span

   Ranges ≤ 5 psi (350 mbar): ±0.5% span

Span Setting:

   Ranges > 5 psi (350 mbar): ±0.3% span

   Ranges ≤ 5 psi (350 mbar): ±0.5% span

Approvals: ROHS Compliant

Minimum Resistance Between Transducer Body and Any Wire: 100 MΩ @ 50 Vdc (before surge protection)

Pressure Cycles: 1 million, minimum

Long Term Stability (1-Year): ±0.1% FS typical

Shock: 50 g, 11 ms half sine shock, Vertical and Horizontal

Vibration: ±20 g

Bandwidth: DC to 1 kHz typical

Response Time: <500 µms

CE Compliant: Meets EN 61326-1:2006 for Industrial locations (certified with 91 m (300 feet) cable length

Wetted Parts: 316L SS

Electrical Outputs:

   mV/V Output:

      Output: 100 mV @ 10 Vdc (Ratiometric 5 to 10 Vdc)

      Supply Voltage: 5 to 10 Vdc (5 mA @ 10 Vdc)

      Input/Output Resistance: 5000 Ω ±10% Typical

   Voltage Output: 

      Output: 0 to 5 Vdc or 0 to 10 Vdc (3 or 4 wire user selectable)

      Supply Voltage: 5 Vdc Output: 10 to 30 Vdc @ 10 mA 

                                10 Vdc Output: 15 to 30 Vdc @ 10 mA

   Current Output:

      Output: 4 to 20 mA

      Supply Voltage: 10 to 30 Vdc

      Max Loop Resistance Ω: (Vs-10) x 50