User Manual

12
13
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, owing
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 owing 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 ush the sensor well and cell cup with a steady
stream of the solution you intend to measure by allowing the
solution to ow into and out of the sensor well and cell cup for at
least 10 seconds.
4. Let sample ow continuously into conductivity cell with no
aeration.
5. Allow both the sensor well and cell cup to remain lled with
sample.
6. Press . The instrument will begin alternating between a
predicted nal ORP value and a free chlorine equivalent
concentration in ppm. Both readings will change rapidly at
rst.