Submersible Water Level Transmitter, Measure 0-5 ft to 0-690 ft of Water

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Manufacturer: Omega(USA)

Model: PX437,PX438,PX439

Introduction:

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

Specifications: 

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 50 Vdc
Accuracy:
     PX437: 0.10% FS BFSL
     PX438: 0.25% FS BFSL
     PX439: 0.50% 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 FFKM
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, 90 kg (198 lb) pull strength. Conductors are 22 AWG.
Weight: 200 g (7 oz) transducer 79 g/m cable (0.8 oz/ft) cable weight

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