P•Xchange™ is the industry’s only field-swappable pressure sensor. Any P•Xchange™ sensor can be connected to any other P•Xchange™ enabled instrument - when you want, where you want - without compromising calibration accuracy. 

The benefits of field-swappable sound velocity sensors are dramatic; please review our discussion paper "Six Advantages to Field-Swappable Sensors" for more detail.

Pressure accuracies, precisions, resolution and response time vary by sensor type.  The following table summarizes the characteristics of each sensor.

Characteristics by Sensor Type

Sensor Type	Accuracy (%FS)	Precision (%FS)	Resolution (%FS)	Response Time
P•Xchange™	0.05	0.003	0.002	10 milliseconds
Strain Gauge	0.05	0.03	0.005	10 milliseconds
Quartz Crystal	0.01	<0.01	0.005	10 milliseconds

With Xchange sensors, instrument recalibration is as simple as unscrewing the sensor installed on the instrument end-cap and replacing it with a new sensor.  The pictures below demonstrate the ease with which Xchange sensors can be swapped. No tools are required.  New sensors install in minutes, are robust, compact, and easy to store.

An Xchange sensor can be placed on any other instrument that has been previously equipped with an Xchange sensor of that same type. 

For example, an SV•Xchange™ sensor can be moved from one instrument to another instrument that was previously equipped with a different SV•Xchange™ sensor.  An SV•Xchange™ sensor cannot be installed in the end-cap location of a P•Xchange™, C•Xchange™, or T•Xchange™sensor.  Xchanges cannot be installed on previous generation AML Oceanographic instruments without upgrades to the mechanicals and electronics of the instrument in question.