Emerson 396RVP instruction manual Section Installation, Installation Through Ball Valve

MODEL 396R pH/ORP	SECTION 2.0
	INSTALLATION

SECTION 2.0

INSTALLATION

2.1UNPACKING AND INSPECTION. Inspect the outside of the carton for any damage. If damage is detected, contact the carrier immediately. Inspect the instrument and hardware. Make sure all items in the packing list are present and in good condition. Notify the factory if any part is missing.

NOTE

If the sensor is to be stored, the protective boot should be filled with either KCl elec- trolyte solution or pH 4.0 buffer solution and replaced on sensor tip until ready to use.

NOTE

Save the original packing cartons and materials as most carriers require proof of damage due to mishandling, etc. Also, if it is necessary to return the instrument to the factory, you must pack the instrument in the same manner as it was received. Refer to Section 8.0 for instructions.

WARNING

Glass electrode must be wetted at all times (in storage and in line) to maximize sensor life.

2.2MECHANICAL INSTALLATION. The Model 396R Sensor may be installed through a weldalet or in a pipe tee or “Y”, as shown in Figure 2-1, when used with a ball valve. Insert the end of the sensor to a depth sufficient to ensure that the glass bulb is continuously wetted by the process fluid. The Model 396R can also be inserted directly into the process without the use of a ball valve for applications not requiring continuous operation during sensor maintenance.

CAUTION

Allow sufficient room for safe retraction and insertion of the sensor. Personnel should have room for stable foot- ing while performing removal or insertion of the sensor.

The sensor must be mounted within 10-90 degrees of the horizontal with the tip pointed downward, thus keeping air bubbles off of the pH sensitive glass bulb. Bubbles settled on the glass bulb disrupt the electrical continuity between the pH sensitive glass and the sil- ver/silver chloride measuring element.

If the retraction version is to be installed without a ball valve follow the installation procedure for insertion service (Section 2.2.2). Perform the following steps for sensor installation through a ball valve:

2.2.1 INSTALLATION THROUGH BALL VALVE.

1.Carefully remove the liquid filled rubber boot which protects the glass electrode and keeps the liquid junction wet during shipping and storage. Discard the liquid and boot. Make sure the lubricated O-ring is in place in the groove inside the male connector on the sensor body.

CAUTION

Buffer solution, in the protective boot, may cause skin or eye irritation.

2.With the male connector on the sensor’s body, insert the sensor into the ball valve until it gently touches the closed valve. The molded electrode guard will protect the glass bulb from breakage.

3.Thread the male connector body tightly into the ball valve assembly. DO NOT tighten the hex nut on the male connector body; doing so would not allow the sensor to be inserted through the ball valve.

4.Pull back hard on the sensor assembly, as if trying to remove the sensor, to be certain that the sensor cannot come free of the ball valve assembly. The built-in retraction stop will butt against the shoul- der of the male connector if properly installed.

CAUTION

The sensor must be captured by the valve assembly and the male connector so that it cannot be blown free by process pressure if mishandled during inser- tion or retraction.

5.After confirming that the sensor assembly is prop- erly secured by the valve assembly, the valve may be opened and the sensor positioned into the process at the desired depth and orientation.

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