Hindowell TPJ-1601-01 photoelectric sensor and switch

Introduction

TPJ series tube liquid monitoring bubble detection sensor , designed for continuous monitoring of liquid status in transparent tubes. When an output reference circuit is added, multiple output states such as "fluid present", "no fluid present" and "tube not present" can be identified,

Bubble sensors are mainly divided into three categories: inc infrared bubble detection sensors, capacitive bubble detection sensors and ultrasonic bubble detection sensors. Today the editor mainly introduces to you the infrared bubble detection sensor.

1. Detection principle

The theoretical basis is the photoelectric effect of optoelectronic devices. Commonly used optoelectronic devices include phototransistors, optical diodes, etc. According to its volt-ampere characteristics, the relationship between the output electric music and the light intensity can be easily obtained. When there are bubbles in the liquid transportation pipeline, due to the reflection of light and the different absorption of light by different the light intensity received by the photosensitive device changes, causing The of output voltage can use this principle to distinguish different in the pipeline and detect air bubbles from the surface.

The basic principle is shown in the figure below

2. Specifications Parameters

Can detect transparent tubes with outer diameters of 1/16 inch (1.6 mm), 1/8 inch (3.2 mm), 3/16 inch (4.8 mm) or 1/4 inch (6.3 mm) .

4. Test circuit