Photoelectric water level detector sensor FS-IR1902D for incubator humidifier

- Mar 07, 2020-

Humidity in the cabinet is a very important factor for cultivation, but it is often overlooked. Maintain sufficient humidity levels and a fast enough humidity recovery rate (such as after opening and closing the door) to ensure that culture failure will not occur due to excessive drying. Therefore, after running the machine for several months, the water in the tank may be reduced due to volatilization. When the low water level indicator (WLow12) is on, water should be added. First open the overflow pipe, use a funnel to connect the rubber pipe to add water from the injection hole to make the low-water level indicator go out, and then measure the supplementary water, and then plug the overflow hole. In order to better monitor the water level in the water tank of the carbon dioxide incubator, we recommend a photoelectric level switch FS-IR1902D.


The photoelectric water tank indicator is a commonly used type of liquid level switch. The working principle is that the sensor contains an infrared light emitting diode and a photoelectric receiver. The light from the light-emitting diodes is directed into a prism on top of the sensor. If there is no liquid, the light from the LED is reflected directly from the prism back to the receiver. When the prism is immersed in the liquid, the light is refracted into the liquid, so that the receiver cannot receive or can only receive a small amount of light. This working principle is used to sense this change. The receiver can drive the switch of the internal photoelectric water tank indicator to start an external alarm or control circuit.

Photoelectric water tank indicator FS-IR1902D: -20 ° C to 100 ° C; 500 mm cable length; Vamac gasket. FS-IR1902D uses a phototransistor trigger to provide digital output. This series provides reverse polarity, overvoltage, short circuit, and transient protection. Therefore, it is often used in the fields of automobile, household appliances, food and beverage processing machinery, compressors, machine hosts, vending machines and other fields.

Photoelectric water tank indicator FS-IR1902D product features:

Solid-state reliability-no moving parts

Small size

Microprocessor compatible

Wide selection of sensing media

Quick response


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