Product Category

Switches

Level Switches

Floatless Level Controllers

K8AK-LS

61F-G[]N

61F-G[]

61F-LS

61F-G[]P

61F-UHS / HSL

61F-AO

61F-AN

Floatless Level Switch (Compact Type)

61F-G[]N

Improved Design for a More Lightweight Construction and Reduced Standby Power Consumption.

Line Up
Specification

Standard Models

Type

General-purpose
 Controllers
 61F-[]N

Long-distance
 Controllers
 61F-[]NL 2KM (2 km)
 61F-[]NL 4KM (4 km)

High-sensitivity
 Controllers
 61F-[]NH

Controlling materials and
 operating conditions

For control of ordinary
 purified water and
 wastewater

For control of ordinary
 purified water and
 wastewater. Particularly in
 cases where the distance
 between the pumps and
 water tanks or between
 supply and receiver tanks
 are far apart or where
 remote control is required.

For control of liquids with
 high specific resistance,
 such as distilled water

Rated voltage

100/200, 110/220 or 120/240 VAC, 50/60 Hz (both supported on same model)

Allowable voltage
 fluctuation range

85% to 110% of rated voltage

Inter-electrode voltage

8 VAC

Inter-electrode current

Approx. 1 mA AC max.

Power consumption

GN[]: 3 VA max., G1N[], G2N[], IN[]: 4 VA max., G3N[]: 5.5 VA max., G4N[]: 8.5 VA max.

Inter-electrode operation
 resistance
 (recommended values)

0 to approx. 4 kΩ

0 to 1.8 kΩ (for 2 km)
 0 to 0.7 kΩ (for 4 km)

Approx. 10 kΩ to 40 kΩ
 *4

Inter-electrode release
 resistance
 (recommended values)

Approx. 15 k to ∞Ω

4 k to ∞Ω (for 2 km)
 2.5 k to ∞Ω (for 4 km)

Approx. 100 k to ∞Ω

Cable length *2

1 km max.

2 km max.
 4 km max.

50 m max.

Output

3 A, 200 VAC (Resistive load)

Ambient operating
 temperature

- 10 to 55 °C

Ambient operating humidity

45% to 85%

Insulation resistance *3

100 MΩ min. (at 500 VDC)

Dielectric strength *3

2,000 VAC, 50/60 Hz for 1 min.

Life expectancy

Electrical: 250,000 operations min.
 Mechanical: 10,000,000 operations min.

Weight

GN models: 315 g; G1N, G2N, IN models: 410 g; G3N models: 625g; G4N models: 870 g

Internal Circuit Diagrams

Example: 61F-GN

 image

Example: 61F-GNL

image

Example: 61F-GNH

image

1. The [] in the model name represents G, G1, G2, G3, G4, or I.
2. The length when using completely insulated, 600-V, 3-core (0.75 mm2) cabtire cables. Usable cable lengths will become shorter as the cable diameter or number of cores becomes larger due to increased floating capacity. For details, refer to Safety Precautions for Floatless Level Controllers.
 3. The insulation resistance and dielectric strength are the values between power terminals and Electrode terminals, between power terminals and contact terminals, and between Electrode terminals and contact terminals. For details, refer to Safety Precautions for Floatless Level Controllers.
 4. Application is possible with 10 kΩ or less, however, this may cause reset failures.

Type

Low-sensitivity Controllers
 61F-[]ND

Two-wire Controllers
 61F-[]NR

Controlling materials and
 operating conditions

For control of liquids with low specific
 resistance, such as salt water,
 wastewater, acid chemicals, or alkaline
 chemicals

For control of ordinary purified water or
 wastewater. Used with a Two-wire
 Electrode Holder (incorporating a
 resistor of 6.8 k )

Rated voltage

100/200, 110/220 or 120/240 VAC, 50/60 Hz (supported by the same model)

Allowable Voltage Fluctuation

85% to 110% of rated voltage

Inter-electrode voltage

8 VAC

Inter-electrode current

Approx. 1 mA AC max.

Power consumption

GN[]: 3 VA max., G1N[], G2N[], IN[]: 4 VA max., G3N[]: 5.5 VA max.,
 G4N[]: 8.5 VA max.

Inter-electrode operation
 resistance
 (recommended values)

0 to approx. 1.8 k

Approx. 0 to 1.1 k

Inter-electrode release
 resistance
 (recommended values)

Approx. 5 k to 0%

Approx. 15 k to 0%

Cable length *2

1 km max.

800 m max.

Output

3 A, 200 VAC (Resistive load)

Ambient operating temperature

- 10 to 55 °C

Ambient operating humidity

45% to 85%

Insulation resistance *3

100 MΩ min. (at 500 VDC)

Dielectric strength *3

2,000 VAC, 50/60 Hz for 1 min.

Life expectancy

Electrical: 250,000 operations min.
 Mechanical: 10,000,000 operations min.

Weight

GN models: 315 g; G1N, G2N, IN models: 410 g; G3N models: 625g;
 G4N models: 870 g

Internal Circuit Diagrams

Example: 61F-GND

image

Example: 61F-GNR

image

1. The [] in the model name represents G, G1, G2, G3, G4, or I.
2. The length when using completely insulated, 600-V, 3-core (0.75 mm2) cabtire cables. Usable cable lengths will become shorter as the cable diameter or number of cores becomes larger due to increased floating capacity. For details, refer to Safety Precautions for Floatless Level Controllers.
 3. The insulation resistance and dielectric strength are the values between power terminals and Electrode terminals, between power terminals and contact terminals, and between Electrode terminals and contact terminals. For details, refer to Safety Precautions for Floatless Level Controllers.
 4. Application is possible with 10 kΩ or less, however, this may cause reset failures.