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MODEL TF396 SECTION 2.0
INSTALLATION
SECTION 2.0
INSTALLATION
In most cases, the pH sensor can simply be installed
as shipped and readings with an accuracy of ± 0.6 pH
may be obtained. To obtain greater accuracy or to ver-
ify proper operation, the sensor must be calibrated as
a loop with its compatible analyzer or transmitter.
2.2.1 Flow Through and Insertion Mounting.
The Model TF396 Sensor has a 1-inch MNPT process
connection at the front of the sensor for mounting into
a 1-1/2 inch tee or the process pipes. See Figure 2-1
through Figure 2-7 for instal lation configurations.
NOTE
LARGE PIPE WRENCHES MUST NOT BE
USED TO TIGHTEN THE SENSOR INTO A
FLANGE OR OTHER TYPE OF MOUNTING.
2.2.2 Submersion Mounting.
The Model TF396 Sensor also has a 1 inch MNPT
process connection at the back of the sensor. Utilizing
a standard 1 inch union, the sensor may be mounted to
a 1 inch SCH 80 CPVC or PVDF standpipe (see Figure
2-5). Tapered pipe threads in plastic tend to loosen after
installation. It is therefore recom mended that Teflon
1
tape be used on the threads and that the tightness of
the connection be checked frequently to assure that no
loosening has occurred. To prevent rain water or con-
densation from running into the sensor, a weatherproof
junction box is recommended (see Figure 2-5). The
sensor cable must be run through a protective conduit
for isolation from electrical interference or physical
abuse from the process. The sensor should be installed
within 80° of vertical, with the electrode facing down.
The sensor’s cable should not be run with power or
control wiring.
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Teflon is a registered trademark of E.I. du Pont de Nemours & Co.
2.1 UNPACKING AND INSPECTION.
Inspect the outside of the carton for any damage. If dam-
age is detected, contact the carrier immediately. Inspect
the hardware. Make sure all the items in the packing list
are present and in good condition. Notify the factory if any
part is missing. If the sensor appears to be in satisfactory
condition, proceed to Section 2.2, Mounting.
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 sensor to the factory, you must pack
the sensor in the same manner as it was
received. Refer to Section 6.0 for return instruc-
tions. If the sensor is to be stored, the vinyl boot
should be filled with pH buffer solution and
replaced on sensor tip until ready to use.
CAUTION
Buffer solution, in the vinyl boot, may cause
skin or eye irritation.
WARNING
Electrode tip must be wetted at all times (in
storage and in line) to maximize sensor life.
2.2 MOUNTING.
The sensor has been designed to be located in indus-
trial process environments. Temperature and pressure
limitations must not be exceeded at any time. A caution
label regarding this matter is attached to the sensor.
Please do not remove the label. See Figure 2-1.
CAUTION
Internal electrolyte fill solution may cause skin
or eye irritation.
CAUTION
Cable connection at back of sensor body is fragile.
Do not overtighten.
CAUTION
Cable connection at back of sensor body is fragile.
Do not overtighten.