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.
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 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.
All dollar amounts on this site are shown in Canadian currency.Note:(1) To order 0.25% accuracy model specify PX438, for 0.1% accuracy specify PX437. See "Part Number Builder" below for pricing. (2) For models with 1/4" NPT male pressure fitting add suffix "-NPT" to part number. No extra charge. (3) For models with additional cable add $1.80 per foot of additional cable
Ordering Example: (1) PX439-002GI-30 is a 0-2 psi, 0.5% accuracy, submersible transmitter with 30 foot cable, CAD595.00
Part Number Builder
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Accuracy select from: 9 for 0.5% Full scale accuracy 8 for 0.25% Full scale accuracy 7 for 0.1% Full scale accuracy
Pressure Range select from: 002GI for 0-2 psi (0-4.6 feet of water) range 005GI for 0-5 psi (0-11.5 feet of water) range 010GI for 0-10 psi (0-23.1 feet of water) range 015GI for 0-15 psi (0-34.6 feet of water) range 030GI for 0-30 psi (0-69.2 feet of water) range 050GI for 0-50 psi (0-115 feet of water) range 100GI for 0-100 psi (0-230 feet of water) range 150GI for 0-150 psi (0-345 feet of water) range 200GI for 0-200 psi (0-460 feet of water) range 250GI for 0-250 psi (0-575 feet of water) range 300GI for 0-300 psi (0-690 feet of water) range
Fitting select from: for No fitting -NPT for 1/4-18 NPT male fitting
Note: All combinations may not be valid, check spec sheet for valid part numbers.