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 (Basic Type)

61F-G[]

Basic Building-block Controllers That Mount Directly to Panels for Easier Maintenance

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Specification

Standard Models

Items

General-purpose
 Controller
 61F-[] (TDL)
 *1, *2

High-temperature
 Controller
 61F-[]T
 *1

Long-distance Controllers
 61F-[]L 2KM (for 2 km)
 61F-[]L 4KM (for 4 km)
 *1

Controlling materials
 and operating
 conditions

For control of
 ordinary purified
 water or sewage
 water

For control of ordinary
 purified water or sewage
 water in cases where the
 ambient temperature is
 high.

For control of ordinary purified water in
 cases where the distance between sewage
 pumps and water tanks or between
 receiver tanks and supply tanks is long or
 where remote control is required.

Supply voltage

100, 110, 120, 200, 220 or 240 VAC; 50/60 Hz

Operating voltage range

85% to 110% of rated voltage

InterElectrode voltage

8 VAC

InterElectrode current

Approx. 1 mA AC max.

Power consumption

61F-G[]: 3.5 VA max.; G1F-G1[], G1F-G2[], or G1F-I[]: 5.5 VA max.; G1F-G3[]: 7.5 VA max.;
 G1F-G4[]: 14.5 VA max.

InterElectrode operate
 resistance

0 to approx. 4 kΩ

0 to approx. 5 kΩ

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

InterElectrode release
 resistance

Approx. 15 k to ∞ Ω

Approx. 15 k to ∞ Ω

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

Cable length *3

1 km max.

600 m max.

2 km max.
 4 km max.

Control output

2 A, 220 VAC (Inductive load: cosφΦ = 0.4)
 5 A, 220 VAC (Resistive load)

Ambient temperature

Operating: -10 to 55°C (-10 to 70°C for 61F-[]T)

Ambient humidity

Operating: 45% to 85% RH

Insulation resistance *4

100 MΩ min. (at 500 VDC)

Dielectric strength *4

2000 VAC, 50/60 Hz for 1 min.

Life expectancy

Electrical: 500,000 operations min.
 Mechanical: 5,000,000 operations min.

Weight

61F-G[]: Approx. 380 g, G1F-G1[], G1F-G2[], or G1F-I[]: Approx. 750 g; G1F-G3[]: Approx.
 930 g; G1F-G4[]: Approx. 1,710 g

Items

High-sensitivity
 Controllers
 61F-[]H *1

Low-sensitivity
 Controller
 61F-[]D *1

Two-wire Controller
 61F-[]R *1

Controlling materials
 and operating
 conditions

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

For control of liquids with
 low specific resistance
 such as salt water, sewage
 water, acid chemicals,
 alkali chemicals

For control of ordinary purified water
 or sewage water used in combination
 with Two-wire Electrode Holder
 (incorporating a resistor of 6.8 kΩ)
 It is possible to wire with less than one
 wiring against general 61F's wiring.

Supply voltage

100, 110, 120, 200, 220 or 240 VAC; 50/60 Hz

Operating voltage range

85% to 110% of rated voltage

InterElectrode voltage

24 VAC

8 VAC

InterElectrode current

Approx. 1 mA AC max.

Power consumption

61F-G[]: 3.5 VA max.; G1F-G1[], G1F-G2[], or G1F-I[]: 5.5 VA max.; G1F-G3[]: 7.5 VA max.;
 G1F-G4[]: 14.5 VA max.

InterElectrode operate
 resistance

Approx. 15 kΩ to
 70 kΩ *5

0 to approx. 1.8 kΩ

0 to approx. 1.1 kΩ

InterElectrode release
 resistance

Approx. 300 k to ∞ Ω

Approx. 5 k to ∞ Ω

Approx. 15 k to ∞ Ω

Cable length *3

50 m max.

1 km max.

800 m max.

Control output

2 A, 220 VAC (Inductive load: cosφΦ = 0.4)
 5 A, 220 VAC (Resistive load)

Ambient temperature

Operating: -10 to 55°C (-10 to 70°C for 61F-[]T)

Ambient humidity

Operating: 45% to 85% RH

Insulation resistance *4

100 MΩ min. (at 500 VDC)

Dielectric strength *4

2000 VAC, 50/60 Hz for 1 min.

Life expectancy

Electrical: 500,000 operations min.
 Mechanical: 5,000,000 operations min.

Weight

61F-G[]: Approx. 380 g, G1F-G1[], G1F-G2[], or G1F-I[]: Approx. 750 g; G1F-G3[]: Approx.
 930 g; G1F-G4[]: Approx. 1,710 g

1. The [] in the model name represents G, G1, G2, G3, G4, and I.
 2. The suffix "TDL" attached to the model name represents models designed for tropical regions (storage humidity of 45% to 90%). For details, refer to Safety Precautions for Floatless Level Controllers.
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 details, refer to Safety Precautions for Floatless Level Controllers.
 4. The insulation resistance and dielectric strength indicate values between power terminals and Electrode terminals, between power terminals and contact terminals, and between Electrode terminals and contact terminals.
 5. Possible to use with 15 kΩ or less, however, this may cause reset failure.
 6. High-sensitivity Controllers use advanced operation. When the power supply voltage is applied, if there are some liquids between the electrodes (ground and operation electrodes), the internal relay will not operate. When the power supply voltage is applied, if there are no liquids between the electrodes (ground and operation electrodes), the internal relay will operate.

Advanced Operation

With advanced operation, the internal relay operates as soon as control power is supplied to the G1F and is reset when current flows between the poles. Wiring is the same as for models with sequential operation.