Grain Moisture Tester MD-7822 Grain Moisture Meter Dimensions: 174 x 38 x 73 mm (host) Ambient temperature: -10 ~ 60°C Accuracy: ±(1% RH + 0.5%) Measuring range: 2% ~ 30% Grain Type Moisture Meter Model: MD7822 I. Overview This instrument is designed to measure the moisture content and temperature of various grains. It is suitable for grain handling, purchasing, storage, and processing applications. The device provides fast and accurate measurements during operation. Measure grain moisture and temperature with ease. II. Performance Characteristics - Utilizes microcomputer (CPU) technology for precise measurement - Features automatic temperature compensation - Large LCD display with backlight ensures clear readings and no parallax - Includes a dedicated backlight control switch for power efficiency - Powered by four AA batteries; low battery voltage is automatically indicated - Durable and well-constructed design with high-quality electronic components - Lightweight and hard shell made of ABS plastic for portability and durability - Suitable for testing multiple grain types: wheat, rice, corn III. Technical Specifications Moisture measurement range: 2% ~ 30% Maximum error: ±(1% RH + 0.5%) Resolution: 0.5% Temperature measurement range: -10 ~ 60°C (14 ~ 140°F) Maximum error: ±2°C (±4°F) Resolution: 1°C / 1°F Operating environment: - Temperature: -10 ~ 40°C (14 ~ 104°F) - Humidity: 0 ~ 70% RH Weight: Includes measuring probe and batteries Dimensions: - Host: 174 x 38 x 73 mm - Measuring probe: 365 x 25 x 43 mm IV. User Manual 1. Install the batteries and press the power button to turn on the device. 2. Press the mode button to select the measurement parameter: grain moisture content or probe location temperature. When measuring grain moisture, the display shows "XL.%". When measuring temperature, the display shows "1-". By default, the device measures grain moisture upon startup. 3. Grain moisture measurement: Ensure the device is set to moisture measurement mode. Press the selection button to choose the grain type (displayed as 1, 2, 3, 4; 1 = wheat, 2 = rice, 3 = rice, 4 = corn). Insert the probe into the grain sample. The displayed value represents the moisture content of the grain. During measurement, pressing the hold button displays "MAX" and activates maximum hold mode. Press again to exit. In maximum hold mode, the display updates only when a higher value is detected. The side button serves as the read hold function—press once to enable (symbol appears), press again to disable (symbol disappears). 4. Temperature measurement: When temperature mode is selected, the device displays the approximate ambient temperature around the probe. Press the unit button to toggle between Celsius and Fahrenheit (default is Celsius). 5. After use, press the power button to turn off the device, which will enter standby mode. 6. Activate or deactivate the screen backlight using the designated backlight control switch.