Business > Industrial Devices > Automation Controls Top > FA Sensors & Components > Sensors > Light Curtains / Safety Components > Safety Liquid Leak Sensor [Control Category 4 PLe SIL3] SQ4 > Order guide
Type | Appearance | Sensing object (Note 1) | Model No. | Output |
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For standard liquid | Material:Polypropylene |
Water etc. | SQ4-A21-P | PNP open-collector transistor |
SQ4-A21-N | NPN open-collector transistor | |||
For chemical liquid | Material:PFA |
Sulfuric acid, Hydrochloric acid, Phosphoric acid, Ammonia, Fluorinert™ (Note 2), Galden® (Note 2) or Fluorine etc. | SQ4-A22-P | PNP open-collector transistor |
SQ4-A22-N | NPN open-collector transistor |
(Note 1) | 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. |
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(Note 2) | Fluorinert is the world wide trademark of 3M. Galden is the registered trademark of Solvay. |
Make sure to purchase the sensor and controller as a set.
Type | Appearance | Sensing object | Model No. | |
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Attachment | Mounting bracket | |||
For standard liquid | Material:Polypropylene |
Material: PVC |
Water etc. | MS-SQ4-21 |
For chemical liquid | Material: PFA |
Material: PFA |
Liquids with comparatively high surface tension such as Sulfuric acid, Hydrochloric acid, Phosphoric acid, and Ammonia | MS-SQ4-22 |
Material: PVC |
Liquids with comparatively low surface tension such as Fluorinert™ (Note), Galden® (Note), and Hydrogen fluoride | MS-SQ4-23 | ||
Liquids such as low-concentration hydrogen fluoride | MS-SQ4-24 |
(Note) | Fluorinert is the world wide trademark of 3M. Galden is the registered trademark of Solvay. |
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Make sure to purchase the connector when using the controller.
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Type | Appearance | Model No. | Description |
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Safety controller | SQ4-C11 | Up to 4 safety liquid leak sensors can be connected. Control Category 4, PLe, SIL3 |
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