MODEL TCL

SECTION 3

 

INSTALLATION

3.2.3 Install the Sample Conditioning Enclosure

1.Refer to Figures 3-3, 3-4, and 3-5 for installation details.

2.Connect the sample line to the sample conditioning system. Use ¼-inch OD hard plastic or stainless steel tubing. If dechlorinated water is being measured, provide a way for occasionally substituting a chlorinated water sample for the dechlorinated sample. Chlorinated water is needed to calibrate the sensor and to check its response.

3.If a grab sample tap is not already available, install one in the process piping. Choose a point as close as pos- sible to the sample line supplying the TCL. Be sure that opening the sample valve does not appreciably alter the flow of sample to the instrument.

4.Connect the drain to a length of ¾-inch ID flexible plastic tubing. The sample must drain to open atmosphere.

5.Find the reagent tubing and fitting in the plastic bag taped to the inside of the enclosure door. Screw the reagent fitting onto the bulkhead fitting at the bottom left of the enclosure. Pass the reagent tubing through the hole in the carboy cap. Be sure the plastic weight will be inside the carboy when the cap is in place. Attach the reagent tubing to the barbed connector. See Figure 3-5.

6.Place the blue plastic carboy beneath the enclosure. Screw the cap and tubing assembly on to the carboy. To prepare reagent, see Section 5.2.

3.2.4 Install the Sensor

1.From inside the sample conditioning enclosure, thread the sensor cable or VP cable through the gland on the upper left side. Leave about one foot of cable inside the enclosure.

2.Wire the cable to the analyzer. Refer to Section 4.4.

3.Remove the nut and adapter from the flow cell. Slip the nut over the end of the sensor. Thread the adapter onto the sensor. Hand tighten only. If you are using a VP cable, connect the cable to the sensor. The connec- tor and receptacle are keyed to ensure proper mating. Once the key has slid into place, tighten the connec- tion by turning the knurled ring clockwise. Remove the protective cap from the end of the sensor.

4.Insert the sensor in the flow cell. Hand tighten the nut.

process piping

analyzer

sensor cable

sample inlet 1/4 inch OD tubing

sample tap

TCL

enclosure

drain

3/4 inch ID barbed fitting

reagent

bottle

FIGURE 3-3. Installing the Sample Conditioning Enclosure

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Emerson TCL instruction manual Install the Sample Conditioning Enclosure, Install the Sensor
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TCL specifications

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