Submersible level sensor receives hazard approval

The PT-500 features a vented, watertight cable and delivers a high-precision 4-20mA solid-state signal while submerged up to 137m.

PT-500 submersible liquid level/pressure transmitters from Automation Products Group are now cCSAus certified for use in Class I, Div 1, Groups C and D and Class I, Zone 0, Group IIB hazardous locations.

Class I, Div 1, Group C and Class I, Zone 0, Group IIB atmospheres contain ethyl-ether vapours, ethylene, or cyclopropane.

Class I, Div 1, Group D atmospheres contain gasoline, hexane, naptha, benzene, butane, propane, alcohol, acetone, benzol, lacquer solvent vapours or natural gas.

The PT-500 features a vented, watertight cable and delivers a high-precision 4-20mA solid-state signal while submerged up to 137m.

A removable stainless steel cage connects to the sensor with a simple snap ring and enables users to save significantly on sensor replacement costs.

"The stainless steel cage is a fairly expensive piece of hardware that typically cannot be removed from the sensor, or re-used".

"Historically that has meant that each time a sensor needed to be replaced in the field so did the cage at an added cost of US $200 or so", says Karl Reid, Engineering Manager.

"Because these types of sensors are used in some nasty environments they tend be replaced on a fairly regular basis, so being able to re-use the cage can deliver exponential savings over a period time", he says.

Rugged IP68 protected PT-500 transmitters deliver accuracy of 0.50% of span and are temperature-compensated to ensure accuracy and long-term stability under extreme temperature variations.

Simple-to-install surface mount technology provides added protection from shock and vibration.

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