Omron 61F-GP-N2 Manual page 5

■ Electrode Separators
F03-14 1P (for Single Pole)
Precautions
■ How to Mount Electrodes
Connecting Electrodes to Electrode Holders
Connecting nut
1. Spin a lock nut and a spring
washer onto the electrode.
Lock nut
2. Fully fit the electrode into the
connecting nut attached to the
Electrode
electrode holder.
■ Application
When using electrodes in sea water or sewage, provide a sufficient
interval (normally 1 m) between the electrodes. If the sufficient inter-
val cannot be provided, employ a low-sensitivity type Floatless Level
Controller.
When taping one of the electrodes to prevent it from contacting the
other electrodes in water, do not tape the electrode entirely but leave
at least 100 mm of its end uncovered.
When the required length of the electrode is more than 1 m, use a
separator at each joint of two electrodes so as to prevent the elec-
trodes from contacting one another. (NOTE: Avoid use of the separa-
tors in dust-containing liquids.)
Usually, electrodes are used in a set of three: long, medium, and
short. Connect the short electrode to E1, the medium electrode to
E2, and the long electrode to E3. Make E3 at least 50 mm longer
than E2.
1m 1m
6.5-dia.
28-dia.
Electrode holder
Clamp screw
3. Tighten the electrode with
the two clamp screws.
Spring washer
4. Secure the connecting
nut by tightening the lock
nut and spring washer.
E1
E2
Min
E3
50mm
F03-14 3P (for Three Poles)
Connecting One Electrode to Another
Spring
washer
1. Spin a lock nut and a spring
washer onto the electrode.
Electrodes are in actual contact with the liquid. Standard electrodes
are made of stainless steel and usable in purified water, sea water,
sewage, acid (except acetic acid, sulfuric acid, etc.) and alkaline liq-
uids, although they may corrode depending upon the temperature
and working conditions.
Note that the Conductive Level Controller 61F-GP-N2 is capable of
controlling liquids with specific resistances of up to 30 k
the controller employs a type PS-3S electrode holder with the elec-
trode(s) submerged to a depth of 30 mm max.
Kind of water Specific resistance
W
City water 5 to 10 k
W
Well water 2 to 5 k
W
Industrial water 5 to 15 k
Rainwater 15 to 25 k
Sea water 0.03 k W -cm
Sewage 0.5 to 2 k
Distilled water 100 k W -cm or less
Over 100 k
Conductive Level Controller
Three 7-dia.
41-dia.
Electrode
2. Fully fit the elec-
Lock nut
trode into the
Spring washer
connecting nut
Connecting nut
attached to the
electrode holder.
3. Tighten the electrode with
the two clamp screws.
4. Secure the connecting
nut by tightening the lock
nut and spring washer.
W -cm when
Applicable type
-cm General-purpose type
-cm General-purpose type
-cm General-purpose type
W -cm General-purpose type
Low-sensitivity type
W -cm Low-sensitivity type
High-sensitivity type
W -cm Consult OMRON
61F-GP-N2
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