7
Additional HI 4104 guidelines
•
Remove the protective plastic wrap that covers the
ceramic junction before assembling sensor for the first
time.
•
Add reference HI 7082 fill solution to bottom of fill
hole or empty and refill fill solution daily before us-
ing.
•
During measurement always operate electrode with
the fill hole open.
•
During normal use, fill solution will slowly drain out
of the tapered cone junction at the lower portion of the
electrode. Excessive loss (>4 cm drop within 24 hours)
is not normal. If this occurs verify cap is tightened and
the interface between the internal cone and outer
body is free of debris.
•
Add filling solution daily to maintain a good head
pressure. For optimum response, this level should be
maintained and not be allowed to drop more than 2-
3 cm (1-inch) below fill hole.
•
Do not use an electrode if crystallized salts are visible
inside the electrode. Drain electrode, disassemble and
rinse internal body with deionized water. Reassemble
and refill with fresh fill solution.
•
If an erratic measurement occurs, check to see if for-
eign matter is seen trapped near the internal cone.
Drain by depressing the electrode cap then refill with
fresh fill solution.
VIII.
VIII.
VIII.
VIII.
VIII.Electrode Preparation
Electrode Preparation
Electrode Preparation
Electrode Preparation
Electrode Preparation
HI 4004
The Hanna HI 4004 is a 2 piece design comprised of a
sensor handle (HI4000-50) and a sensing module (HI
4004-51).
1. Remove sensing module from shipping vial. Do not
touch the sensing membrane with the
“
H
”
hole pat-
tern on it.
2. Screw the module into the sensor handle finger tight.
Do not overtighten.
