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B.
Boiler
Standard boiler electrodes have a MNPT stainless steel bushing and are supplied with a FNPT cross
designed for mounting in the skimmer (surface) blowdown line. Sampling of the boiler's water can be
achieved using one of two typical plumbing configurations (continuous sampling or timed and/or sample
& hold). For a successful installation, it is critical to observe the recommended distances and pipe sizes
provided in the installation drawings.
For best results, the electrode cross should be mounted in a 1" skimmer blowdown line within 4' of
the boiler. Smaller line sizes and greater distances may affect the response time and accuracy of the
electrode. A flow-throttling device downstream from the probe (within 24 inches) is required to ensure that
the electrode is exposed to water and not steam. Properly installed and adjusted, this device will prevent
flashing in the electrode chamber.
NOTES:
1.
Install a fully-ported type of valve between the electrode and the boiler. This allows
the electrode to be isolated for removal and cleaning.
2.
A flushing line and 1/4 turn type ball valve should be installed in the bottom of the
cross to periodically "flush" sediment from the electrode chamber.
3.
Make sure the alignment arrows on the probe end up parallel to the flow for
best performance.
WARNINGS:
1.
The probe must be fully immersed in the system water to read correctly.
Steam flashing will result in incorrect readings.
2.
Do not exceed a maximum water temperature of 436°F (224°C)
3.
Do not exceed a maximum pressure of 350 psi (24.1 bar)
4.
A throttling device must be installed downstream from the electrode.
Boiler Conductivity Electrodes
Wiring Note: BE-4RTD probes require a 6-conductor cable from controller to probe; BE-32 probes only
require a 2 conductor cable.
BE-4RTD and BE-32
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