Overfill prevention should be a top focus in liquid transfer applications. Obviously, the risks of an overfill vary considerably depending on the media, but any overfill costs money and effort to clean up, especially when nearby equipment is in danger of being damaged.
Dixons ADS probe offers a unique solution. The Dixon ADS out alarm probe is designed to be used in liquid transfer applications where it is not possible or economical to permanently fit level sensing probes to the receiving tanker or container.
The out alarm probe is a completely stand- alone system not requiring any cables or external power supply. It can operate up to 2,500 hours on single changeable 9V alkaline battery that is enclosed inside this rugged weatherproof, corrosion resistant enclosure that also holds the audible and visual alarm indicators.
The probe utilises sensitive phase shift digital capacitance sensor technology that does not require any calibration or adjustment and can detect conductive and non conductive liquids. The wetted materials are stainless steel and PTFE as standard and the out alarm can be supplied in various lengths ranging from 24” to 60”, however, other lengths can be made available on request. The probe has an adjustable insertion length through a standard 14” fitting and to aid setting the shaft has a full hard laser engraved rod.
Before use the probe can be tested simply by moving this switch to the test position and the correct probe functionality is confirmed by the green LED. If the battery power is low then the unit will go into an alarm status.
So when using the out alarm it is simply inserted into the product receiving tank. If required the probe insertion length can be set like this, simply slacken off the 14” fitting, set to the desired length using the engraved markings on the probe, retighten the 14” fitting, turn on the unit and your ready to go.
During the loading process if the probe detects liquid, the unit will go into alarm mode (wet probe now) and as you can see and hear, the unit gives a very clear indication of an overfill situation so the operator can stop the loading process.
Although the out alarm is a stand alone version, other variations can provide a direct interface with the loading automation and control system to automatically shut down the loading automatically.
The standard unit has a temperature range of -25C to +120C but a higher temperature range probe is available and also probes designed for use with Hydrochloric acid.