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Submersible Pressure Transmitters with Moisture Trap

0 to 5 psi, Gauge Pressure, ±0.5% Accuracy


Item# PX439-005GI

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-4 $686.74
5-9 $652.40
10-24 $638.67
25-49 $611.20
50-99 $597.46
100+ $583.73

In stock

Lead Time (If not in stock): 5 Days
0 to 5 psi, Gauge Pressure, ±0.5% Accuracy PX439-005GI PX439-005GI
  • Our PX437 is being discontinued. We encourage you to use our newest submersible level transmitter with transient protection, the PX633 . This is a permanent replacement and is the optimal choice to satisfy all of your high demand level measuring applications.

  • Available with Accuracies of 0.5% 0.25% and 0.1% of Full Scale
  • Designed for Complete Submersibility
  • Welded 316 Stainless Steel Construction
  • Unique Cable Seal System Insures Water-Tight Integrity
  • High Static Accuracy and Repeatability
  • 100% Computer Tested Calibrated and Serialized
  • Calibration Sheet Provided
  • Fully Temperature Compensated
  • Moisture Trap Included as Standard Feature
  • Please check out our newest submersible level transmitter with transient protection the PX633

PX439-005GI Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

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Pressure Range Unit
Pressure Range Max
Pressure Range
Accuracy Class
Accuracy Value(compensated range)
Additional Features
Pressure Range Min
Pressure Type
Output Signal
Electrical Output
Pressure Port Size
Pressure Port Type
Operating Temperature Range

  • Accuracy Value 4 to 20 mA dc
  • Excitation 9 to 30 Vdc
  • Input Resistance 100 M at 50 Vdc

Please check out our newest submersible level transmitter with transient protection, the PX633, many ranges are in stock, available for immediate delivery, and are priced competitively.The PX633's inverted cone seal extends working life of cable and transducer in conditions where the sensor may experience severe stress from turbulent process media. The PX633 submersible level transmitter is the optimal choice to satisfy all of high demand level measuring applications. The PX437 are only available for a limited amount of time and the permanent replacement will be our PX633.

OMEGA’s PX437 PX438 and PX439 Series submersible water level transmitters are designed to meet the rigorous environments of applications including well monitoring pump tests lift stations chemical tank level ground water and surface water measurement and process control and many others. They provide repeatable precision depth measurements under the most adverse conditions.These transducers utilize a silicon pressure cell fitted into a stainless steel housing with an integral welded 316 stainless steel barrier diaphragm. The supplied calibration sheet specifies input and output data which reflects the unit’s static accuracy and thermal characteristics. Each transducer is shipped with a moisture trap that prevents moisture from entering the vent tube. Replacement moisture traps are available as accessory items.

Excitation: 9 to 30 Vdc reverse polarity protected
Output: 4 to 20 mA dc 2 wire short circuit protected
Input Current: 20 mA max
Zero Offset: ±0.12 mA max
Insulation Resistance: 100 MΩ at 50Vdc
Accuracy: PX437 0.1% FS BFSL PX438 0.25% FS BFSL PX439 0.5% FS BFSL (includes linearity hysteresis and repeatability)
Response Time: 2 ms
Operating Temperature: -10 to 60°C (15 to 140°F)
Compensated Temperature: 0 to 50°C (32 to 120°F)
Combined Thermal Effect: ±0.05% FS/°C (Zero and Span) 0.1% FS/°C for 2 and 5 psig ranges
Proof Pressure: 150%
Burst Pressure: 200%
Wetted Parts: 316 Stainless Steel acetal Polyurethane Cable FKM or PFE
Fill Fluid: Silicone oil
Mounting Provisions: Suspended by cable. For turbulent conditions specify optional mounting clamp Electrical
Connections: Submersible cable terminating in pigtail leads
Cable: Polyurethane jacketed shielded cable with polyethylene vent tube and Kevlar® tension members 198 lb (90 kg) pull strength Conductors are 22 AWG
Weight: 200 g (7 oz) transducer 79 g/m cable (0.8 oz/ft) cable weight

Examples of pricing for popular models is referenced in the 'To Order' box. Use the 'Part Number Builder' below to get pricing for all available models.
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Rated 5 out of 5 by from Great Quality I bought this as a replacement for a existing transducer. I am happy with it because it was super easy to install and no programing or adjustments were needed.
Date published: 2017-02-08
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How to install this PX439 sensor? can I use this PX439 sensor to measure the River level? How can i install?

Asked by: SmartpH
Hello, There are multiple ways of installing these unit.One common way would be by using a restraining tube. These are designed into a tank with a SAE fitting on the top. You would install the mounting plate with the cord grip onto the transducer cable , with the rounded hex section facing away from the ducer. For a detailed schematic kindly email pressure@omega.com
Answered by: SAE OE
Date published: 2020-07-11
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Submersible Water Level Transmitter, Measure 0-5 ft to 0-690 ft of Water
0 In Stock
This item is no longer available to purchase. For questions contact sales
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