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SQ4-A21-P | Safety Liquid Leak Sensor [Control Category 4 PLe SIL3] SQ4

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This product has been confirmed that it does not contain the 6 substances specified in EU RoHS Directive 2011/65/EU and the 4 substances specified in 2015/863/EU.

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Product Number	SQ4-A21-P
Part Number	SQ4-A21-P
Product	Safety Liquid Leak Sensor [Control Category 4 PLe SIL3]
Details	Sensor [For standard liquid]
Product name	Safety Liquid Leak Sensor [Control Category 4 PLe SIL3] SQ4

As of April 20, 2024
Specifications and design of the products are subject to change without notice for the product improvement.

Spec Detail

Item	Specifications
Product Number	SQ4-A21-P
Part Number	SQ4-A21-P
Sensing object	Water (Standard liquid) (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.
Power voltage	12 to 24 V DC plus or minus 10 % Ripple P-P 10 % or less
Current consumption	30 mA or less
Utilization category	DC-12, DC-13
Detection output(Leakage detection)	PNP open-collector transistor - Maximum source current: 50 mA - Applied voltage: Same as the supply voltage (between detection output and +V) - Residual voltage: 2.5 V or less (at 50 mA source 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 output(Leakage detection):Short-circuit protection	Incorporated
Detection auxiliary output(Initial detection)	PNP open-collector transistor - Maximum source current: 50 mA - Applied voltage: Same as the supply voltage (between detection auxiliary output and +V) - Residual voltage: 2.5 V or less (at 50 mA source current)
Detection auxiliary output(Initial detection):Response time	50 ms or less
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
Protection	IP65 / IP67 (IEC)
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.
Ambient humidity	35 to 85 % RH, Storage: 35 to 85 % RH
Emitting element	Infrared LED (modulated)
Material	Enclosure: Polypropylene
Cable	0.18 mm² 4-core PVC cabtyre cable, 2 m 6.562 ft long
Weight	Net weight: 45 g approx Gross weight: 110 g approx