Metex P/R575 Fixed Insertion, Combination Style pH/ORP Sensors - Manual (Page 4)

P / R 575 & 585 Page 3
3.0 INSTALLATION
3.1 General Instructions
3.1.1 Specific instructions for each type of probe are given in the following pages.
Common to all probes are the following instructions:
a) If the distance between the probe and the instrument is such that a direct
connection is not possible you will need a preamplifier, AquaMetrix Model 101A.
The box should be well sealed and away from corrosion danger. Be sure that
you have sufficient slack cable to allow for probe removal for calibration and
servicing.
b) Route the interconnect cable from the junction box to the instrument, preferably
in metal conduit. Do not run the power cable or control cables in the same
conduit with the probe interconnect cable.
c) Remove the protective plastic caps from the end of the probe before placing in
service.
d) For best results probes should always be mounted vertically with electrodes
down. If this is not possible, the probe must be at least 15° above horizontal.
e) Do not use a pipe wrench on the probe.
3.2 Submersion Mounting, P575 and P575K
3.2.1 A submersion mounting kit is available from AquaMetrix which includes 4 ft. of 1”
pipe, a 1 inch CPVC coupling and a strain relief fitting. Proceed as follows, either
with the kit or with your own hardware:
a) Apply a thread sealant to the thread on the cable end of the probe and screw a
1 inch coupling onto the probe. Route the probe cable through an appropriate
length of 1” pipe and, using thread sealant, screw the pipe into the reducer. A
cable strain relief fitting should be used on the upper end of the pipe. In the kits
a wire bracket is provided to aid in supporting the assembly. The process
should not be allowed to come in contact with the cable end of the probe.
3.3 Submersion Mounting, P585 and P585K
3.3.1 A submersion mounting kit is available from AquaMetrix which includes 4 ft. of 1”
pipe with a 3/4” NPT thread and a strain relief fitting. Proceed as follows, either with
the kit or with your own hardware.
a) Install the compression fitting components on the probe in the order shown in
the drawing on the next page so that the pipe thread is towards the cable end of
the probe.
b) Snug up the nut of the compression fitting to locate it in the desired position.
Hand tighten as much as possible, then turn 1/2 turn with a wrench.
c) Apply a thread sealant to the pipe thread portion of the compression fitting.