Xylem H-3553 - Manual (Page 11)

The position and installation of the orifice line is vital to a successful and accurate H-3553 installation. These
are just a few of several things to consider when installing or checking an orifice line installation. Refer to
“Application Note 1005” for more detailed information about orifice line installation.
Be sure the water current or flow is not pushing against the end of the orifice line, as it will cause a
pressure to be placed on the line that is not related to the water depth. Also, be sure the water current or
flow is not pulling or drawing from the end of the orifice line, as this will cause a false lower pressure on
Installation
9
The WaterLOG® H-3553 is a system with a fully integrated digital pressure transducer specifically designed
for water level monitoring. The H-3553 directly measures dry gas over a broad temperature range.
WARNING! Before proceeding with the installation, please consider the following site preparation steps to
help prevent problems later.
Water Depth
Table 3-1 shows the maximum pressure to which the H-3553 is factory calibrated to measure. The sensor can
survive temporary operation up to twice the maximum rated pressure for the model’s range. However, any
measurements made beyond the rated pressure will be inaccurate.
*NOTE: Depth calculations
are derived from the standard
equation that one PSI is
generated by a column of water
2.3067 feet deep.
model Pressure range water Depth range* accuracy
H-3553-15 0-15 PSI 0-34.60 Feet +/- 0.007 Feet
H-3553-30 0-30 PSI 0-69.20 Feet +/- 0.014 Feet
Table 3-1: Models Pressure Ranges
Mounting
Consideration should be taken in properly mounting the H-3553 system. First, attach the included mounting
feet to the H-3553 enclosure. Mount the H-3553 in a location where it will not get jarred or will shift during
operation.
When possible mount all equipment with connectors pointing down so that moisture or condensation that
could rest on the connectors does not penetrate the inner components of the equipment. Also, specifically
with the H-3553, having it mounted vertically helps prevent moisture from migrating to the valves. If moisture
does migrate, it will migrate first at the bottom of the tank and near the nylon plug.
Desiccator
Generally, an external desiccator is required to dry the compressor intake air. The desiccator prevents
accumulation of moisture in the tank, manifold and other areas in the system. Connect the output of the
desiccator to the port marked “Inlet”. Desiccators which employ “indicating” silica gel have the advantage of
visually showing the status of the desiccant. As the gel becomes saturated with moisture the gel changes from
blue to pink.
Orifice Line