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Floatless Level Switch (Ultra High-sensitivity Type)
61F-UHS/-HSL
CSM_61F-UHS_-HSL_DS_E_3_3
Ideal for Detecting Ice, Pure Water, or
Humidity
• Applicable for detecting ice, pure water steam, humidity, or other
substances that conduct electricity poorly.
• Two types of model available: Ultra high-sensitivity and variable
ultra high-sensitivity.
Refer to Safety Precautions for Floatless Level
Controllers.
■ Ordering Information
Type
Ultra high-sensitivity
Variable ultra highsensitivity
Model
Ultra highsensitivity
61F-UHS
Model
61F-HSL
Note: When ordering, specify the desired operating voltage at the end of the model number.
Example: 61F-UHS [220VAC]
Desired supply voltage
■ Ultra High-sensitivity Models
Use these models for sensing objects such as ice, high-purity distilled water, moisture, or other objects with low electrical conductivity.
Specifications
Item
High-sensitivity 61F-UHS
Variable high-sensitivity 61F-HSL
Supply voltage
100, 200, or 220 VAC; 50/60 Hz
24, 100, 110, 200, or 220 VAC; 50/60 Hz
Operating voltage range
85% to 110% of rated voltage
Interelectrode voltage
24 VAC
13 VDC max.
Interelectrode current
Approx. 1 mA AC max.
Approx. 1 mA DC max.
Power consumption
3.2 VA max.
Interelectrode operate resistance
0 to approx. 1 MΩ (see note 1)
0 to approx. 5 MΩ (variable)
Interelectrode release resistance
Approx. 5 M to ∞ Ω
Operate resistance + 2.5 MΩ max.
Cable length
5 m (see note 2)
(see note 3)
Control output
0.3 A, 220 VAC (Inductive load: cosφ = 0.4)
1 A, 220 VAC (Resistive load)
2 A, 220 VAC (Inductive load: cosφ = 0.4)
5 A, 220 VAC (Resistive load)
Ambient temperature
Operating:–10 to 55°C
Ambient humidity
Operating:45% to 85% RH
Insulation resistance
100 MΩ max. (at 500 VDC)
Dielectric strength
2,000 VAC, 50/60 Hz for 1 min
Life expectancy
Electrical:
50,000 operations min.
Mechanical: 5,000,000 operations min.
Electrical:
500,000 operations min.
Mechanical: 5,000,000 operations min.
Weight
Approx. 380 g
Approx. 240 g
Note: 1. Use 61F-UHS for detecting water leakage with high specific resistance. Connect a sensor cable between terminals 1 and 7.
2. Two Electrodes can be connected to the 61F-HSL. Use them for an alarm, not for creating a self-holding circuit.
3. The length when using completely-insulated, 600-V, 3-conductor (0.75 mm2) cabtire cables. Usable cable lengths will become shorter as
the cable diameter or number of conductors becomes larger. For more details, refer to Safety Precautions for Floatless Level Controllers.
4. It is recommended that the cable length be kept as short as possible since the Electrode circuit current is at DC micro-current level. Moreover, the Electrodes will corrode rapidly if the current is allowed to constantly flow between the Electrodes.
Be careful with the electrode polarity and grounding when wiring.
1
61F-UHS/-HSL
Internal Circuit Diagrams
61F-UHS
Tb
22
Tc
44
Ta
33
6
7
1
X/a
Ground 8
Tb
To each circuit
Power circuit
88
S2
Constant voltage
circuit
E2
Relay
Level detection
circuit
77
Power
supply
Rectification
smoothing circuit
E1
To each circuit
Surge-absorbing
circuit
11
5
Operation
power supply
E3
S1
Power circuit
55
Level detection
circuit
S2
Rectification/
smoothing
circuit
Rectification
smoothing circuit
Power
supply
Relay
Operation
power supply
S1 66
61F-HSL
Relay
2
X/c
Tc
4
Ta
3
X/c
External Circuit Diagrams (Example)
61F-UHS
61F-HSL
4
2
1
E3
Power
source
5
3
4
6
3
7
2
E2 E1
Socket: 8PFA1 (track mounted)/
PL08 (back connecting)
6
7
1
8
(-)
Power
source
5
8
(+)
Socket: 8PFA (track mounted)/
PL08 (back connecting)
2
61F-UHS/-HSL
■ Connections
Automatic Water Supply and Drainage Control
Ultra High-sensitivity
Type
Dimensions:
Page 4
Automatic Water Supply Control
Automatic Drainage Control
Connections
Connections
Commercial Voltage
R S T
Commercial Voltage
R S T
61F-UHS
6
MCCB
5
0V
4
3
U
24 V Control
circuit
61F-UHS
6
MCCB
5
0V
U
Contactor
8
3
U
Control
circuit
24 V
24 V
U
24 V
Power
supply
7
4
1
U
Power
supply
2
7
8
1
2
(See
note.)
Contactor
(See note.)
U
PS-3S
Motor
protection
relay
Water supply
source
M
Water
tank
Stop
E3
E2
E1
P
Motor
protection
relay
PS-3S
Start
Start
M
Wastewater
tank
P
E3
E2
E1
Stop
Reservoir
Note: Be sure to ground the common Electrode E3 (the
longest Electrode).
Connection Sockets
8PFA1 (Front-connecting)
PL08 (Read-connecting)
Note: Be sure to ground the common Electrode E3 (the
longest Electrode).
Connection Sockets
8PFA1 (Front-connecting)
PL08 (Read-connecting)
Connect terminal 2 to the contactor coil terminal.
Connect terminal 3 to the contactor coil terminal.
Principles of Operation
Principles of Operation
P
Water supply
Pump OFF
E1
Pump ON
E2
Indicator ON
Pump ON
Indicator OFF
Pump OFF
E3
E1
E2
E3
Indicator ON
Indicator OFF
P
Water drainage
• When the water level reaches E1, the pump stops and,
when the water level reaches E2 or below, the pump
starts.
• When the water level reaches E1, the pump starts and,
when the water level reaches E2 or below, the pump
stops.
3
61F-UHS/-HSL
Dimensions
Note: All units are in millimeters unless otherwise indicated.
61F-UHS
5
91
72 71.2
61F-UHS
101
3.5
82
24
97.5
7
8PFA1
60
61F-HSL
5
5.6
80
62
61
61F-HSL
113
3.5
72.6
91
49
7
8PFA
99.3
■ Electrode Holders
PS-3S/-4S/-5S
PS-3SR/-4SR/-5SR
(see note)
Mounting Holes
PF2 parallel thread
(effective dia.: 58.135)
9-dia. rubber
bushing (inner)
Used with
coupling
34 dia.
With
Mounting
Bracket
65 dia.
hole
PS-3S (approx. 150 g)
PS-3SR (approx. 155 g)
PS-4S (approx. 170 g)
PS-4SR (approx. 175 g)
PS-5S (approx. 185 g)
PS-5SR (approx. 190 g)
Mounting Screw Holes
Note: The PS-3SR, PS-4SR, and PS-5SR have built-in resistor of 6.8 kΩ and used for the two-wire 61F models.
PS-31
PF1/2 Parallel thread
11 dia.
Mounting Holes
Weight: approx. 325 g
Electrode
SUS304
3
M3
Rubber
packing
29.5 dia.
F03-31 Dust-preventive rubber cap (optional)
Weight: approx. 20 g
Note: Standard holder construction includes three integral
300-mm-long Electrodes. However, a model having
1,000-mm-long Electrodes is available on request.
4
61F-UHS/-HSL
(72)
BF-1
23
8
Two, M5 × 25
mounting screws
22
Mounting Holes
26-dia.
hole
(20 dia.)
60 (48) 33 dia.
Terminal bolt,
SUS304 (M6)
Weight: approx. 75 g
48
Two, 6-dia. holes
Nuts (M6)
(18)
40±2.0
(47)
BF-3/-3R
BF-5/-5R
BF-3(R)
Weight
BF-3: approx. 210 g
BF-3R: approx. 215 g
Mounting Holes
Two, 6-dia. holes
R19
Three, 26-dia. holes
64-dia. hole
1
1
120°
110 (90)
90
90
120°
Two, 6-dia. holes
Two, M5 × 25 mounting screws
Nut
Terminal
(M6)
bolt, SUS304
(M6)
74
BF-5(R)
20 dia.
Weight
BF-5: approx. 360 g
BF-5R: approx. 365 g
Mounting Holes
Two, 6-dia. hole
Five, 26-dia. hole
Spring washer
23
110 dia. (90)
50
76
90
(18)
8 22
40±2.0
(47)
(49)
90
R13
50
76
(72)
BS-1(S)
BS-1
Weight: approx. 70 g
Width across flats: 20
Terminal bolt
M18
SUS304 (M4) P=0.7
P=1.5
Two, M4 P=0.7
Mounting Holes
24
Nut (iron)
12
50
39
51
M18 P=1.5
(fine screw thread)
101
BS-1S
BS-1S-1
BS-1S2
Width across flats: 20
Terminal bolt
M18
SUS304 (M4) P=0.7
P=1.5
Two, M4 P=0.7
24 dia.
12
50
101
39
51
M18 P=1.5
(fine screw thread)
5
61F-UHS/-HSL
Terminal bolt
SUS304
SUS316
Titanium
HAS B
HAS C
M4 nut Width between
SUS304 flats: 20.5
BS-1T
Mounting Holes
Two, M4**
24 dia. M18 P=1.5
(fine screw thread)
HAS
titanium
*This nut is made of Fluorine Resin
**A connecting nut made of HAS B, HAS C,
or titanium is not supplied with two M4 screws
and thus has no holes for such screws.
Material
SUS304
SUS316
Titanium
HAS B
HAS C
Weight
Approx. 55 g
Approx. 55 g
Approx. 45 g
Approx. 65 g
Approx. 60 g
PH-1
PH-2
(Approx. 140 g with a 1-m cord)
(Approx. 235 g with a 1-m cord)
Two, 6-dia. holes
PVC resin (black)
Resin
26 dia. 27 dia. 5 dia.
19 dia.
Two-core
cable
Single-core
cable
Cable OD: Vinyl, Hypalon 6.8 dia.
Cable OD: Vinyl 5.0 dia., Hypalon 6.5 dia.
Note: Cable is supplied in lengths of 1, 5, 10, 15, 20, 30, 40,
50, 60, 70, 80, 90, or 100 meters.
■ Electrode Separators
F03-14 1P for one pole
F03-14 3P for three poles
F03-14 5P for five poles
Five, 7 dia.
Three, 7 dia.
6.5 dia.
20
28 dia.
41
Weight: Approx. 15 g
Weight: Approx. 30 g
20
46
Weight: Approx. 30 g
■ Safety Precautions
Refer to Safety Precautions for All Level Controllers.
Precautions for Correct Use
Short Wiring in Electrode Circuit
• Keep the wires connecting the Controller to Electrode Holders as
short as possible. If long leads are used, the floating capacity of the
leads, and abnormal surges or noise in the Electrode circuit can
cause malfunctions.
• The thicker the cables, the shorter the permitted wiring length. The
length of the cable connecting the Controller and Electrode is
specified in the Controller datasheet as a guideline assuming that a
600-V VCT 0.75-mm2, 3-core cabtire cable is used. Test results
indicate that the actual wiring length using VCT 3.5-mm2, 3-core
cable laid over the ground is 50% of the specified length for
general-purpose applications and 80% of the specified length for
long-distance applications. When selecting cable specifications,
remember that the wiring length is further decreased for
underground cables and larger diameter cables because of the
increased floating capacity with the ground.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
In the interest of product improvement, specifications are subject to change without notice.
6
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have any questions or comments.
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Programmable Products.
Omron Companies shall not be responsible for the user’s programming of a programmable Product, or any consequence
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Data presented in Omron Company websites, catalogs and other materials is provided as a guide for the user in determining
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Change in Specifications.
Product specifications and accessories may be changed at any time based on improvements and other reasons. It is our
practice to change part numbers when published ratings or features are changed, or when significant construction changes are
made. However, some specifications of the Product may be changed without any notice. When in doubt, special part numbers
may be assigned to fix or establish key specifications for your application. Please consult with your Omron’s representative at
any time to confirm actual specifications of purchased Product.
Errors and Omissions.
Information presented by Omron Companies has been checked and is believed to be accurate; however, no responsibility is
assumed for clerical, typographical or proofreading errors or omissions.
2015.10
In the interest of product improvement, specifications are subject to change without notice.
OMRON Corporation
Industrial Automation Company
http://www.ia.omron.com/
(c)Copyright OMRON Corporation 2015 All Right Reserved.
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