• Standby power reduced to 85% or less of previous models. (Applicable to 61F-GN.)
• Weighs only 85% or less of previous models. (Applicable to 61F-G3N/-G4N.)
• Easy identification of operating status with LED operation indicator.
• Increased reliability of internal relay (micro load: 5 VDC, 1 mA) to enable PLC input.
• Electrode terminals and other wiring terminals are separated for easy wiring.
• Select from three mounting methods: JEM, DIN rail mounting, or screw mounting.
Note: LED operation indicator is provided on Controllers manufactured in August 1999 or later.
| 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
 |
| 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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