Portable moisture analyzer and technical performance and working principle

First, product introduction

The LKS-7 portable plunger moisture analyzer measures the moisture content of grain by direct shovel. Easy to operate, quick to test, intuitive reading, and convenient to carry. It is intended to be used for food storage monitoring and is an ideal equipment for the purchase of food.

Second, technical performance

1. Variety and range of measurement: Rice 10~18% Rice 10~18% Wheat: 10~18% Rapeseed: 5~15% Corn: 10~18% and other granular varieties 2. Accuracy: ±1%
3. Response time: 5 seconds 4. Working environment: temperature 0~40°C, relative temperature <85%
5. Power supply 6F22 laminated battery one (9V)
6. Dimensions (mm)
7. Weight: 0.5kg

Third, the working principle The instrument consists of a capacitive sensor, C / V conversion circuit, A / D converter and LCD digital display circuit. Capacitive sensor shovel into the measured grain, the medium inside is measured a variety of different food. Since the dielectric constant of water is much larger than the dielectric constant of a general substance, a small change in the moisture content of the measured grain causes a large change in the capacitance of the sensor. Through the C/V conversion circuit and the A/D converter, the LCD digital circuit directly displays the percentage of the measured moisture content of the grain.