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I need proof pressure much greater than 1.5 X. How can you help me?
We can provide 5 X over pressure protection on most ranges if you can accept a thermal error of 0.1% full scale output per degree Centigrade.
What installation ideas do you have to help me get rid of electrical noise interfering with the signal?
An ounce of prevention goes a long way. Either try to eliminate the source of noise or move the transducer as far away from it as possible. We strongly encourage you to secure our cable shield to a good earth ground and that you use a 4-20 mA signal output. Armed with these precautions and the fact that many of our transducers are CE approved for electromagnetic interference, you should have few problems.
My cable on the submersible always seems to get cut and damaged. What am I doing wrong?
This is the most common problem that our users encounter. Make sure that all of your colleagues and staff understand the importance of handling the cable with care. The cable should not be bent around rough or sharp edges. Always use a cable reel during transport. Where possible, suspend the unit in a perforated 2" PVC pipe and thread the cable through protective conduit to the nearest junction box and use KPSI's self-sealing submersible cable. The self-sealing feature in this cable blocks moisture's travel path to the sensor should the cable be cut.
I have an application where the transducer is frequently damaged by voltage spikes. What can be done to prevent this?
At a minimum, make sure the cable shield is connected to an earth ground as near as possible to the transducer. We can provide a surge protection kit for both our below and above ground transducers and transmitters. These kits will handle typical spikes that might come in through the power lines as well as surges that travel through the ground due to nearby lightning strikes.
How much shock can your submersible transducers withstand?
The lower pressure ranges can be damaged if dropped from several feet onto an unforgiving surface like concrete, so we recommend that the protective shipping foam remain in place until the unit is installed.
What is the response time of your transducer?
From initial power up, the transducer output will stabilize within a fraction of a second. The frequency response is rather low, probably less than 1 kHz, but it really depends on the application, the media, plumbing, etc. Call our factory for application assistance if frequency response is critical in your application.
How do I attach your vent filter or aneroid bellows to my cable vent tube?
The vent filter can be mounted anywhere convenient, preferably out of the weather. It can be mounted in any position and connects to the cable vent tube via the extension tube with metal connector tube provided. The aneroid bellows must be mounted in a way that its movement is not encumbered. It is provided with a mounting base that will install to a standard DIN3 mounting rail common to most control panels. Also provided with the bellow is a 3 inch length of DIN3 rail, just in case one is not already available.
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What is the best way to mark my cable?
Use white vinyl marking tape available from your local hardware or electronic stores. These same stores may also sell cable marking kits.
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Any ideas for preventing marine growth on your submersible transducers?
You might want to try waterproof grease. Remove the threaded nose cap to facilitate applying the grease. Take care when applying the grease not to trap air bubbles against the sensing diaphragm and not to damage the diaphragm.
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How many pressure measurements can you make before the diaphragm on the pressure sensor fails?
In normal operation - millions of cycles. We find that transducer failure is rarely due to diaphragm fatigue.
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What is the mean time between failure for your submersible pressure transducer?
Properly installed units last tens of thousands of hours.
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What is the turnaround time on repairs?
Once we get a unit into our shop it takes 1 to 2 weeks to ship it.
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What is the longest length of cable you have attached to a submersible transducer?
With long cable lengths, we suggest an output of 4-20 mA. With this output, we have shipped units with 2500 feet of cable.
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Why do you use 316 SS housings and sensors for your standard transducers?
It offers a good combination of corrosion resistance and reasonable cost. We do offer other metals such as Titanium for very corrosive environments.
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What wire gauge should I limit myself to when connecting to your 22 AWG wire?
Use 22 AWG or greater.
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Does it make any difference if I mount the transducer in a vertical or horizontal position?
No. Our units have a minimum amount of position sensitivity. You should mount it in the same position, however, throughout the measurement cycle.
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What is the longest length of time one of your products has run continuously?
Since 1986, the year we first started manufacturing all-media pressure transducers.
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What happens when you freeze your transducer in a column of water?
We have frozen our submersibles in a container of water in a home freezer, with no resulting damage. However, depending on the pressure range of the unit, over pressure of the unit is possible. In harsh environments where debris is common and ice shifts, you might expect damage to both the transducer and cable
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What are the most common reasons customers keep buying your products?
Rapid delivery, less that 5 working days.
We offer guaranteed lightning protection.
Reliable, long lasting products.
Use 800 numbers for order entry and support.
No hassle service.
Excellent pre and post sales application support.
Quick response to problems.
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What is the function of the blue wire from the submersible cable?
The blue wire is attached to the cable shield. It should be connected to a good earth ground.
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How long will my vent filter/desiccant cartridges last?
This depends upon the amount of moisture in the air where the transducer is installed. Typically, one would not last as long in Florida, where it is warm and humid for much of the year, as it would in Arizona, where the air remains very dry for much of the year. The best solution is to monitor the installation periodically until you get a feel for the desiccant life in your installation.
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How far off of the bottom of the well should I set my level transmitter/transducer?
As long as the bottom of the well is free of sediment, the transducer will work on the very bottom. It is best, however, to set it a nominal distance off of the bottom (1 foot or 2 feet, i.e.), for ease in scaling your process control equipment, and clear of your pump intake
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I have lost the calibration sheet for my transducer/transmitter. Can I get a replacement copy?
Yes you can! Simply call us with your transducer?s part number and serial number.
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Can I have my KPSI transducer/transmitter recalibrated?
Since the transducer electronics are potted inside the housing, it cannot be recalibrated per se. We can, however, apply zero and full-scale pressures to your transducer and provide you with a new calibration report. Contact KPSI repair for a Return Material Authorization number.
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How do I know whether I need a stainless steel or Titanium transducer/transmitter and polyurethane or Tefzel jacketed cable?
If you have any question regarding the compatibility of transducer materials with the media to be measured, feel free to contact a KPSI Sales Engineer. They are equipped with reference materials that provide guidance for selecting the proper materials for your application.
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I want to use a KPSI Industrial Pressure Transducer (Series 27, 28, or 30) on the standpipe of my elevated water tank but it will be located in a vault that may flood. What can I do?
We can supply you with a submersible transducer with a 1/4" MNPT screw-on pressure connection. The watertight construction is your insurance policy against flooding!
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