Teledyne Analytical Instruments LXT-380, Instructions Manual

Page: 75 / 104

SP3X Sensors LXT-380 Universal Transmitter
Teledyne Analytical Instruments
56
sensor in place. The torque specification for the gland fitting is 20-ft/lbs.
Over-tightening of the nut may swage the nylon or Teflon ferrules to the
housing crushing the internal sensor components.
8.1.2 IMMERSION
The ¾” MNPT compression fitting is reversed and threaded into an
extension/immersion pipe so the compression gland is facing the
measurement end of the sensor. Feed the cable through the immersion
tube, insert the SP3X sensor at least 5” into the tube and tighten the
sensor in place.
8.1.3 FLOW THROUGH
Although the insertion configuration can be used as a flow-through
mounting by inserting the SP3X sensor into a pipe tee, Teledyne has
various flow cells available for convenience. The flow cells are 2.0”
diameter by 5” long, ported ½” FNPT through and ¾” FNPT for the
sensor. The flow cells are available in 316 Stainless Steel, PVC and
Kynar. Use of the flow cell can facilitate an optional spray cleaning
nozzle for the electrode. Connecting 40+ psi of water or air to the nozzle
will remove particulate materials or biofilms from the sensor tip.
Detergents or solvents can be used to remove greases or oils from the
sensor while acids can be used for hard water scale.
8.1.4 VALVE RETRACTABLE
The SP3X sensor is optionally designed for valve retraction service,
(-1) Sensor Style. Mounting is directly into a process line or through a