New Digital Grain Moisture Meter MD7822 LCD Display Humidity Tester Contains Wheat Corn Rice Moisture Test Meter

New Digital Grain Moisture Meter MD7822 LCD Display Humidity Tester Contains Wheat Corn Rice Moisture Test Meter

1. Microcomputer technology (CPU) is used to make the measurement more accurate.
2. It has the function of automatic temperature compensation.
3. Large-screen LCD with backlighting to ensure clear reading and no parallax.
4. There is a special backlight control switch to save batteries.

Specifications:

1.Moisture measurement range: 2% - 30%
2.Maximum error: ± (1%Rh + 0.5)
3.Resolution: 0.5%
4.Temperature measurement range: -10 - 60 degree C
5.Maximum error: ± 2 degree C (± degree F)
6.Resolution: 1 degree C/ 2 degree F
7.Gauge dimension: 14*3.* 7.1cm
8.Gauge weight: 116g (Without Batteries)
9.Probe dimension: 41*4.5*4.5cm
10.Probe weight: 230g

Instructions
1. Install the battery and press the button to turn it on.

2. Press the button to select the measurement item of the instrument: the moisture content of the measured grain or the temperature of the probe location. When measuring the moisture content of grain, the meter displays "××.×%", and the measuring probe

When the temperature is at the location, the meter displays “×××℃”. By default, the meter is in the state of measuring the moisture content of grains.

3. Measure the water content of grains: confirm that the meter is in the state of displaying the water content of grains, and press the button to select the grains to be measured.
(the type is represented by the display screen 1, 2, 3, 4, 1 is wheat, 2 is rice, 3 is rice, 4 is corn), insert the probe into the grain to be tested, and then

The measurement of food moisture, at this time, the meter display is the moisture content of the food to be measured. During the measurement, if you press the key, the screen displays "MAX", and the meter enters the maximum hold mode.

mode, press the key again to exit this mode. In the maximum value hold mode, the display will be updated only when the measured value is greater than the current displayed value, otherwise it will not be updated. side buttons

For the reading hold key, press it for the first time to select the reading hold function (the display shows the symbol), and press it again to cancel the function (the display does not display the symbol).
4. Measuring temperature: When selecting the temperature at the location of the measuring probe, the meter can roughly display the temperature of the environment where the probe is located. At this time, press to switch between Celsius and Fahrenheit (

The meter displays Celsius by default).
5. After the measurement is completed, press the power button, and the meter will enter the sleep state.
6. Turn on/off the display backlight

Open the battery compartment cover of the rear case, take out the battery at the bottom, and turn the backlight control switch to "ON" (indicating that the backlight is turned on) or "OFF" (

Indicates that the backlight is off). If the switch has been turned to "ON", the backlight will be on after power on; otherwise, the backlight will not be on.
Seven, matters needing attention
1. This instrument is a high-resistance instrument, and each part has good insulation. When using and storing, pay attention to moisture and dustproof, keep it dry and clean, so as not to affect the accuracy of the measurement.
2. When using the measuring probe to measure the moisture, the grain pressure has a great influence on the measurement. Generally, the measurement is most accurate when the sack is placed in a single layer.

It should be corrected according to the experience accumulated in use, and the influence value of grain pressure should be subtracted to make the reading more accurate. The greater the grain moisture, the greater the influence of grain pressure on the measurement, and the moisture is at 13

%, the influence of grain pressure on the measurement is small.
3. When measuring the multi-layered grain with the measuring probe, as long as the influence of the grain pressure is reduced according to the accumulated experience, even if the multi-layered high-moisture packaged grain samples are measured

, it can still be tested very accurately (within ± 0.5%), but if the relationship between measurement accuracy and grain pressure must be considered, place the grain bag in a single layer, and insert the measuring probe from top to bottom.

The input measurement shall prevail, and the data measured by single-layer placement and multi-layer placement can also be compared to summarize experience.

Five, battery replacement
1. When the battery voltage is lower than the specified value, a low voltage symbol will appear on the display, indicating that the battery needs to be replaced.
2. Open the battery door and take out the battery.
3. Install the battery correctly according to the mark on the battery box.
4. If the meter will not be used for a long time, please take out the battery to prevent battery leakage and damage to the meter