SLX 220a & SLX 220b Overview:

The SLX 220a and SLX 220b submersible transducers consist of two components; a level transmitter (i.e. the SLX 130-E) and a current transmitter (i.e. the T425 or T423 respectively).

The SLX 130-E provides a 0,5-4.5 VDC output over the sensor's pressure range.  The T425 and T423 provide the 5VDC (nominal) stable reference to excite the SLX 130-E.  Further, the T425 and T423 convert the 0.5-4.5 VDC signal to a calibrated 4-20 mADC output.  Both the T425 and the T423 contain SPAN and OFFSET potentiometers which allow the installing technician to adjust the T425/T423 output so that the signal meets the requirements as found in the field.  Further, the T423, as found in the SLX 220b, provides an on-board simulation potentiometer which allows the field tech to simulate the tank's level, thus reducing the necessity of a full tank of water for transducer calibration.

SLX 220a & SLX 220b   Datasheet 

SLX 220a  - T425     Datasheet

SLX 220b - T423     Datasheet

 Notes:

1) The photograph shows the SLX 220 with the optional NEMA 4X enclosure.  
2) The SLX 220a ships with the T425.
3) The SLX 220b ships with the T423.