5
MODEL 1181 pH/ORP
SECTION 2.0
INSTALLATION
SECTION 2.0
INSTALLATION
2.1 GENERAL.
The transmitter may be installed in
harsh environmental locations. The transmitter should,
however, be located to minimize the effects of temper-
ature gradients and temperature fluctuations, and to
avoid vibration and shock.
CAUTION
AVOID GROUND LOOPS:
(Sensor's shield
wire must not contact a grounded surface).
1. Use well insulated wire. Clean up all
metal burrs on conduit before pulling
cable.
2. Follow wiring instructions for the sen-
sor. Shields aren't grounded on our
analyzers.
3. Seal the sensor conduit from liquids,
which can cause a short.
NOTE
Intrinsically safe units must be installed in
accordance with their designated drawing
numbers. See Section 2.5 for details.
Further non-certified components CAN-
NOT be substituted with certified units.
This would void all certifications.
2.2 MECHANICAL INSTALLATION.
Two threaded
mounting holes are located in the bottom of the trans-
mitter housing (see Figure 2-1). These holes are pro-
vided for mounting to a flat surface or for attaching the
transmitter to the pipe mounting bracket (see Figure 2-
1 ).
NOTE
If the transmitter is mounted in a vertical
position, the sensor leads should come into
the top of the housing and the power leads
should come into the bottom of the hous-
ing.
FIGURE 2-1. Transmitter Mounting Details