Model SLX 220 Engineering Specifications
A submersible level transducer shall be provided to sense the liquid level of the ___________ at the location as shown on the plan drawings and in accordance with the manufacturer's recommendations. The transmitter shall be a 4-20 mADC, 2-wire, 12 to 40 VDC loop-powered type with its output signal directly proportional to the measured level excursion. The transducer shall be UL Listed.
The transducer housing shall be fabricated of PVC with a 2.5" diameter Teflon¨ diaphragm. Silicone oil shall be used as a hydraulic fill.
The sensor shall provide an output signal directly proportional to the sensed pressure. The sensor shall be mounted using its signal cable and have 3/4" NPT pipe threading for pipe mounting.
The internal air pressure of the sensor assembly shall be relieved to atmospheric pressure through a sealed breather system.
The transmitter shall contain easily accessible calibration and ranging adjustments. Offset shall be adjustable from 0-90% of the sensor range. Span shall be adjustable from 10-100% of the sensor range. The transmitter shall contain integral level simulation for ranging adjustments and system test purposes. The transmitter shall provide adjustable signal damping.
The transmitter shall provide three levels of transient protection on the 4-20 mA loop: a gas tube arrestor for suppression of high voltages, transorbs, and varistors for fast clamping of lower voltage transients. The transmitter's output shall be measurable without disconnecting the loop power. The transducer shall be a CONTEGRA Model SLX 220.