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Specifications
Cable is constructed of 4 conductor, 22 AWG 19/.34 tinned copper with .009" polyethylene insulation. The conductors are cabled with fillers and a polypropylene vent tube (.100" x .060"). A clear mylar is added followed by a 36 AWG tinned copper wrap that provides minimum coverage of 95%. An additional clear mylar is added followed by a Kevlar member (200 lb. pull strength), a water block layer and a 0.30" black polyurethane outer jacket.
Chemical Resistance
Polyurethane is chemically resistant to potable water (less than 2 ppm chlorine content), waste water, borax, butane, animal fat, carbonic acid, citric acid, cod liver oil, corn oil, glycerin, glycol, mineral oils, potassium nitrate, potassium sulfate, silicone oils, Stoddard solvent, tannic acid (10), tartaric acid and turbine oil.
Installation
Most installations either suspend our submersible transducer in a perforated 1 ½" or 2" PVC instrumentation still well or attach the transducer (using our optional ½" MNPT fitting) to a rigid conduit. Other applications use our optional mounting bracket to clamp the transducer to a fixed object (i.e., wall, ladder, step) or require the unit to be suspended without any protective still well or attachment device.
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Although KPSI installs cable with a water block layer, in all installations, care should be taken to ensure no damage occurs to the cable, as cable damage represents one of the most frequent causes of transducer failure. Water block will prevent moisture intrusion through small cuts in the cable from reaching the transducer. |
Bending of Cable
Maximum bending radius is 1 inch.
Cable Compression
Cable can be used in conjunction with compression-type fittings; e.g., ingress to a junction box. We recommend only those fittings that utilize a plastic or rubber female, no metal. Also, the installer should avoid over-tightening, which can result in a pinched vent tube.
Cable Lengths
For a 0-5 VDC output, a maximum cable length of 100 feet is recommended. A 4-20 mA signal can be sent thousands of feet, depending upon the power supply available. Longest continuous submersible cable available is 2500 feet.
Cable Splicing Kit
A field installable cable splice allows splicing to our polyurethane cable. It is commonly used for well applications where expensive tefzel cable is required for suspension in corrosive media and the liquid level is shallow but the well is hundreds of feet deep. It also is used in those emergency situations where cable must be spliced together to get an application up and running.
 return to KPSI Level and Pressure Transducer Application Notes
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