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Electrode Installation
Controllers may come configured for various circulating water systems. Listed below are instructions for
cooling tower and boiler typical installations. Your specific installation requirements may differ but should
conform to these instructions as much as possible for proper operation.
A.
Cooling Tower
The standard probe(s) and/or flow assembly for cooling tower installations is constructed of schedule
80 PVC and supplied with 3/4" slip fittings for installing into a sample line. To insure proper operation
the sample line must have a flow rate of 3-10 gpm. Inlet pressure must be higher than outlet pressure in
order for water to flow past the electrode(s) to achieve the required rate. The probes are temperature
compensated for increased accuracy.
NOTES:
1.
Install an isolation valve on either side of the flow
assembly so electrodes can be easily isolated for
removal and cleaning.
2.
A line strainer is recommended upstream from
the probes to protect against fouling and damage.
3.
Systems with a flow switch require 2-3 gpm flow
rate to operate outputs.
!
WARNINGS:
1.
Electrodes are O-ring sealed, which if
damaged will cause a leak.
2.
Do not allow pH sensor tips to dry out,
damage will occur.
3.
Do not exceed a water temperature range
of 32°F to 140°F.
4.
Do not exceed a maximum pressure of
150 psi.
Typical Cooling Tower Installation Diagram
WATERMETER
COOLING TOWER
MAKE-UP
PUMP
CIRCULATION
FS-0C
PE-NUT
E-4A-10
Conductivity
Probe
E-30-PH
MW-T-3
UNION-3/4TT
6
FS-FC
E-30-PH
1A9A000262
FS-T
FS-B1-SP
2C0A-150
FS-SP
Sample
TO DRAIN
CHILLER
FS-PT-P
Paddle Flow Switch
used with option
E3
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