Description
| 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
 |
Example: 61F-GNL
 |
Example: 61F-GNH
 |
*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.
*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
 |
Example: 61F-GNR
 |
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