Floatless Level Switch (Ultra High-sensitivity Type)
61F-UHS/-HSL
CSM_61F-UHS_-HSL_DS_E_2_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.
Weight
Approx. 210 g
Electrical:
500,000 operations min.
Mechanical: 5,000,000 operations min.
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.
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