


| Parameter | Value |
|---|---|
| Item | Specifications |
| Cable | 0.1 mm24-core PFA cabtyre cable, 2 m6.562 ftlong |
| Weight | Net weight: 45 g approxGross weight: 110 g approx |
| Details | Sensor [For chemical liquid] |
| Product | Safety Liquid Leak Sensor [Control Category 4 PLe SIL3] |
| Material | Enclosure: PFA |
| Protection | IP65 / IP67 (IEC) |
| Part Number | SQ4-A22-N |
| Product name | Safety Liquid Leak Sensor [Control Category 4 PLe SIL3] SQ4 |
| Power voltage | 12 to 24 V DC plus or minus 10 % Ripple P-P 10 % or less |
| Product Number | SQ4-A22-N |
| Sensing object | Sulfuric acid, Hydrochloric acid,Phosphoric acid, Ammonia, Fluorinert (Note 2), Galden (Note 2), Hydrofl uoric acid etc. (Note 3)(Note 1) Highly viscous liquid may not be stably detected.(Note 2) The agents mentioned above are examples. It may not be detected depending on viscosity the agent.Before using this device, check the detecting liquid and installation condition.(Note 3) Fluorinert is the world wide trademark of 3M. Galden is the registered trademark of Solvay. |
| Ambient humidity | 35 to 85 % RH, Storage: 35 to 85 % RH |
| Emitting element | Infrared LED (modulated) |
| Ambient temperature | -10 to +55 ℃+14 to +131 ℉(No dew condensation or icing allowed) (Note) Storage: -10 to +55 ℃+14 to +131 ℉(Note) Liquid being detected should be also kept within the rated ambient temperature range. |
| Current consumption | 30 mA or less |
| Utilization category | DC-12, DC-13 |
| Detection output(Leakage detection) | NPN open-collector transistor- Maximum sink current: 50 mA- Applied voltage: Same as the supply voltage (between detection output and 0 V)- Residual voltage: 2 V or less (at 50 mA sink current) |
| Detection auxiliary output(Initial detection) | NPN open-collector transistor- Maximum sink current: 50 mA- Applied voltage: Same as the supply voltage (between detection auxiliary output and 0 V)- Residual voltage: 2 V or less (at 50 mA sink current) |
| Detection output(Leakage detection):Response time | 10 ms or less |
| Detection output(Leakage detection):Output operation | ON when normal condition or initial detection, OFF when detection leakage or wrong installation |
| Detection auxiliary output(Initial detection):Response time | 50 ms or less |
| Detection output(Leakage detection):Short-circuit protection | Incorporated |
| Detection auxiliary output(Initial detection):Output operation | ON when normal condition, OFF when initial detection or accidental leakage |
| Detection auxiliary output(Initial detection):Short-circuit protection | Incorporated |
Technical specifications and performance data
Installation and operation guide