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Improve the electrical termination of vented submersible pressure sensors

KL1 Cable Junction Box for Submersible Level TransmittersSubmersible cable is more expensive because it has to be reinforced to support the sensor plus its own weight in deep holes without stretching which would lead to a change in sensor position and ultimately sensor calibration.

A submersible cable also has a vent tube running through it to allow gauge reference pressure sensors access to ambient air pressure which is essential for accurate level measurement. Due to this extra complexity, submersible cable are more expensive than general purpose sensor cable and therefore the KL1 junction box helps reduce the cost of installations whilst providing a vent which prevents moisture ingress down the cable.

Although most instruments are not able to survive a direct lightning strike it is possible to protect nearby instrumentation from voltage surges which are less severe but can be just as damaging to sensitive sensor electronics without adequate discharge protection. The KL1 submersibe sensor junction box includes the option for protection from a 10 kiloamp discharge current.

If a PT100 temperature sensor probe is included in the installation the KL1 terminal box can include an option for a PT100 transmitter to convert the output from a platinum resistance thermometer to a 2 wire, 4 to 20 mA output signal.

Vented submersible pressure sensor products
  • 18.605 G Low Cost Submersible Diesel Fuel and Water Tank Level Sensor
  • LMK 487 Submersible Ballast Tank and Draught Level Pressure Transmitter
  • DCL 531 Modbus RTU RS 485 Submersible Stainless Steel Liquid Level Sensor

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Help Guides

  • Measuring negative pressure using a positive differential pressure range
  • Pressure Sensor Accuracy Specifications
  • Process Connections
  • Determining calibration error of Bourdon tube pressure gauge
  • Measurement Accuracy
  • Supply voltage and load resistance considerations for pressure transmitters
  • Measuring vacuum with negative gauge or absolute ranges
  • What is the difference between gauge and absolute pressure measurement
  • Measuring the difference in air pressure between rooms
  • How to Connect a 4-20mA Current Loop Pressure Transmitter
  • Advantages and Disadvantages of using a 4 to 20 mA Signal
  • Determining water tank volume using hydrostatic pressure
  • How do you measure the volume of a liquid using pressure
  • What is the difference between vacuum and absolute pressure
  • What does negative and positive gauge pressure mean

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