Emerson 396RVP instruction manual Section

Page 38

MODEL 396R pH/ORP

SECTION 6.0

 

MAINTENANCE

4.Discard used O-ring from male connector body

(A). Coat new O-ring with a thin film of the O-ring lubricant provided. Position it in the machined O- ring groove in place of the discarded O-ring.

CAUTION

Make sure lubricant does not contact any part of the sensor tip particularly the glass bulb.

5.Cover the 1" MNPT pipe threads of the male con- nector body (A) with Teflon tape (not provided) to protect them from galling during reinstallation.

6.Pass the wires from the new sensor through the process end male connector (A). Make sure that the beveled edge of the ferrule faces the process end of the sensor. Snug the hex nut (B) to keep it in place. Do not tighten down fully on the hex nut at this time.

7.Pass the wires from the new sensor through the hex nut (D), the split ferrule (from the old sensor), male connector body (C), O-ring, and through the junction box from the “neck” opening and out to the printed circuit board in the junction box. Butt the ferrule’s beveled edge and the sensor tube against the junction male connector (C). Screw the hex nut (D) by hand until the tube is “locked” into the male connector body. Make sure that the male connector body (C) is sufficiently tightened. The sensor will “click” into place by pulling the sensor tube away from the junction box, but will not move from side to side or pull clear of the male connector. If the sensor tube is correctly attached to the junction box, wrench tighten hex nut (D) on male connector body (C) (see Figure 6-1). Do not put the sensor tube in a vise or use a pipe wrench to tighten the hardware as these will damage the sensor. If sensor tube is not correctly attached to the junction box, loosen hex nut (D) and repeat.

8.Connect the sensor wires to the terminals on the printed circuit board in the junction box in the manner recommended on the junction box cover,and reattach the BNC connector to the preamp. Screw on the cover of the junction box aside. Discard sensor tube.

9.Insert the sensor in the process fitting. Stop it against the closed ball valve. Slide the process- end male connector down the sensor tube to mate with the process fitting. Tighten the male connec- tor into the process fitting.

10.Pull back hard on the sensor assembly, as if trying to remove the sensor, to be certain that the sensor cannot come free from the valve assembly and male connector. The built-in retraction stop collar at the end of the sensor will butt against the shoul- der of the male connector.

11.Open ball valve and position the sensor at the desired insertion depth and orientation. Using a crescent or open end wrench, tighten the hex nut

(B) to secure the sensor in place. See Figure 6-2.

NOTE

A stainless steel ferrule is available if the Teflon ferrule does not adequately grip, be careful and avoid over tightening. This can damage the sensor tube.

CAUTION

If the male connector leaks during insertion or retrac- tion, replace the O-Ring (PN 9550099) in the male connector body (A).

If the sensor is to be stored, the rubber boot should be filled with 7pH buffer solution and replaced on sensor tip until ready to use.

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Contents Retractable pH/ORP Sensors Essential Instructions Special Conditions for safe useList of Tables Table of ContentsModel 396R and 396RVP List of Figures Figure No TitleSection Description and Specifications Features and ApplicationsModel 396RVP Performance and Physical Specifications Model 396RMinimum Conductivity 100 µS/cm Weight/Shipping Weight Measured RangeOrdering Information ModelChoose one Commonly Used Accessories for Model 396ROther Accessories for Model 396R BNC Adapter Choose oneCommonly Used Accessories for Model 396RVP Other Accessories for Model 396RVPSection Installation Installation Through Ball ValveSection Typical Mounting Configurations for Model 396R Dimensional Drawing Model 396R with Optional Ball Valve PN 40396R05 D 920 Front Side 396R-21 Back Side 396R Front Side 396R-25 Section Section Section Wiring Model 396R Wiring Model 396R40396R07 40396R012 40396R09 40396R13 40396R06 40396R21 40396R22 14. Wiring Model 396R- -54 to Model Section Wiring Model 396RVP Wiring Model 396RVPModel 81 Wiring Model 2081 Wiring 10. Model 1054 Wiring 14. Model 54/54e Wiring 18. Model Xmt-P-XX-10 Wiring 21. Model 1055-10-22-32 Wiring 396R pH Calibration Recommended two point buffer calibration procedureSection Start UP and Calibration Recommended pH Sensor StandardizationORP of Saturated Quinhydrone Solution Model 396R-21 21 tube Section MaintenanceRetractable Version Model 396R-25 36 tubeCompensation Elements ElementsSection Example of Sensor Tube Replacement Diagnostic Message Section Diagnostics and TroubleshootingTroubleshooting with Diagnostics Description of Problem RemedySensors. For code 01, replace sensor Section Return of Material Warranty RepairNON-WARRANTY Repair GeneralWarranty Return of MaterialSpecifications subject to change without notice
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