61F-GP-N2 24VAC Omron, 61F-GP-N2 24VAC Datasheet - Page 64

• Manufacturer Part Number: 61F-GP-N2 24VAC
• Description: LEVEL CONTROL
• Manufacturer: Omron
• Series: 61Fr
• Type: Level Control - General Purposer

Specifications of 61F-GP-N2 24VAC

• Applications: Supply and Drain Control, Full and Shortage Alarms
• Mounting Type: DIN Rail/Channel
• Voltage - Supply: 24VAC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 61F-GP-N224VAC; 61FGPN224VAC

Application Examples
61F Selection Guidelines
61F
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Note: 1. The high-sensitivity models may suffer from resetting
Table 1 Water Resistivity Values
(Japanese Reference Values)
City water
Well water
River water
Rain water
Sea water
Sewage
Distilled water
In case of the 61F-HSL ultra high-sensitivity variable model,
malfunction due to electric corrosion may occur in the DC elec-
trode circuit. Be careful not to use the product in such a way
where current constantly flows between electrodes.
Level control in tanks, reservoirs, sewage plants, underground
wells, mixing plants etc.
Level control for element protection in pipes, channels, and
irrigation systems.
Flow detection in pipes, channels, and irrigation systems.
Ice bank control in cold drink dispensers, ice makers, water
chillers, bulk milk tanks, etc.
The limit of specific resistivity of a fluid controlled by the
general-purpose model at an immersion depth not exceeding
30 mm is 30 Ω-cm, using PS-3S Electrode Holders. Use the
high-sensitivity models (H type) for liquids with higher resistivity
(see note 1). Refer to the resistivity values listed for water and
other liquids in Table 1 and Table 3 when selecting the unit
specification. The resistivity range detectable by the 61F is
shown in Table 2. Refer to the information on the units and the
fluid to be controlled when selecting the appropriate model.
!
Water type
2. The circuit configuration of the 61F-jH high-sensitivity
Caution
problems when used with certain types of water. In
some cases it cannot substitute for the general-purpose
models or low-sensitivity models. Be sure to select the
model appropriate for the application.
model is designed so that the relay de-energizes when
there is water present across the Electrodes. When
power supply voltage is applied, the internal relay turns
to the NO contact and, when the electrode between E1
and E3 becomes conductive, the relay is reset to the NC
contact. This contact operation is reverse for models
other than the high-sensitivity models. Although the in-
ternal relay operates (and operation indicator turns ON)
simply when the power supply voltage is applied, this
operation is not abnormal. (The relay in the 61F-jNH
energizes when there is water present across the Elec-
trodes.)
5 to 10 kΩ S cm
2 to 5 kΩ S cm
5 to 15 kΩ S cm
15 to 25 kΩ S cm
0.03 kΩ S cm
0.5 to 2 kΩ S cm
250 to 300 kΩ S cm min.
Resistivity
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Table 2 Detectable Resistivity Ranges
Note: The specific resistivity ranges of fluids to be controlled are
Table 1A Conductance Values of Water
Long-distance models (4 km)
Long-distance models (2 km)
Low-sensitivity models
2-wire models
General-purpose models
High-temperature models
High-sensitivity models
(compact plug-in models)
High-sensitivity models
(standard models)
Ultra High-sensitivity models
City water
Well water
River water
Rain water
Sea water
Sewage
Distilled water
Dispensing of liquids by volume.
Indication of liquid buildup due to filter blockages.
Pollution/foul water detection for rivers, drains, etc.
Alarm control warning of abnormal or dangerously high or low
levels.
Water type
given for the PS-3S at an immersion depth not exceeding
30 mm.
Model
100 to 200 µS/cm
200 to 500 µS/cm
67 to 200 µS/cm
40 to 67 µS/cm
33,300 µS/cm
500 to 2,000 µS/cm
3.3 to 4 µS/cm max.
5 kΩ S cm max.
10 kΩ S cm max.
10 kΩ S cm max.
10 kΩ S cm max.
10 to 30 kΩ S cm
10 to 30 kΩ S cm
30 to 200 kΩ S cm
30 to 300 kΩ S cm
100 to 10 kΩ S cm
Resistivity (recommended
Conductance
values)
61F