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Floatless Level Controller (Ultra High-sensitivity Type)

61F-UHS/-HSL

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

■ 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

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.

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. More-

over, 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.

Type

Ultra high-sensitivity

Variable ultra high-

sensitivity

Model

Model

Ultra high-

sensitivity

61F-UHS

61F-HSL

61F-UHS

61F-HSL

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 M

(see note 1)

0 to approx. 5 M

(variable)

Interelectrode release resistance

Approx. 5 M to

Operate resistance + 2.5 M

max.

Cable length

5 m (see note 2)

(see note 3)

Control output

0.3 A, 220 VAC (Inductive load: cos = 0.4)

1 A, 220 VAC (Resistive load)

2 A, 220 VAC (Inductive load: cos = 0.4)

5 A, 220 VAC (Resistive load)

Ambient temperature

Operating:–10 C to 55 C

Ambient humidity

Operating:45% to 85% RH

Insulation resistance

100 M

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. 210 g