Myron L PS6FCE - Manual (Page 16)

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pH Sensor Storage Solution and replace protective cap. If
Myron L pH Sensor Storage Solution is unavailable, you can
use a strong KCl solution, a pH 4 buffer, or a saturated solution
of table salt and tap water (ref. Cleaning Sensors, 2. pH/ORP,
pg. 32). Do not allow pH/ORP sensor to dry out.
D. Measuring Free Chlorine Using FC E
The FC E function can be used to measure discrete samples, flowing
solution and bodies of water. Measurement technique is particular to the
type of sample. For accurate results, use the FC E Flow Method described
in section 2 below to measure discrete or flowing samples. Use the FC E
Immersion Method described in section 3 below in situations where the
PS6FC E can be dipped to obtain a sample. Read through section 4. FC E
Best Practices before you begin.
1. Prepare for FC E Measurement
1. For ease of measurement, set the instrument’s Auto oFF feature
to 75 sec (ref. Auto oFF, pg. 28).
2. Ensure the FC E mode has been activated (ref. ORP/FC E Mode
Selection, pg. 10).
3. Remove protective cap from the pH/ORP sensor by rotating
while grasping and pulling up.
2. FC E Flow Method
1. Empty the pH/ORP sensor well of all storage solution.
2. Hold the PS6FC E at a 30º angle (cup sloping downward).
3. Thoroughly flush the sensor well and cell cup with a steady
stream of the solution you intend to measure by allowing the
solution to flow into and out of the sensor well and cell cup for at
least 10 seconds.
4. Let sample flow continuously into conductivity cell with no
aeration.
5. Allow both the sensor well and cell cup to remain filled with
sample.
6. Press . The instrument will begin alternating between a
predicted final ORP value and a free chlorine equivalent
concentration in ppm. Both readings will change rapidly at
first.