The old ring card intelligent grain moisture tester -LSKC-4B grain moisture meter - Determination of Zhengzhou Zhonggu machinery equipment factory
Model: LSKC-4B
Basic indicators
1, measurement of varieties: Early Indica and late indica rice, wheat, corn, rice, rapeseed and other raw grains and semi-finished products of grain and grain powder.
2. The range of measurement: 10%-20%, rapeseed (5%-17%)
3. Measurement error: according to the (Q/PQCI-89) "grain and oil testing method of moisture determination", it should be in accordance with the following table:
4, power supply: two 1.5V (R20) batteries
5, instrument working conditions: ambient temperature: 0 degree C-40 C, relative humidity: not more than 80% (40 C), power supply voltage: 2.4V-3.2V
6. The shape size: 240 x 172 x 110 (mm)
7, weight: 3.6kg
The instrument is a resistance measurement and is made up of a pressure conducting sensor, a DC amplifier, a indicator instrument and so on.
Performance
(1), principle, structure
1. measuring varieties:
Rice, rice, wheat, corn, sorghum, millet, wheat flour, peanut and other raw grains. Semifinished and powdery can be measured. For other grain species, there is no scale mark on the indicating instrument. First, we can compare the indication of the instrument with the constant temperature method of 105 degrees, and get the corrected value. When we use it, we will get the moisture value after modifying the indication value of the instrument according to the corrected value.
2 measurement range: 10%~20%
3.: error in the range of 12%~17% is less than or equal to 0.5% in 10%~12%, in the range of 17%~20% is less than or equal to 1%
4. repeat error: less than 0.2%
5. power: two section 1 battery (R20) (3V)
6. working current: < 45mA
7.. Environment temperature; 0 ~ 50 centigrade
Humidity: 8. = 80% (40 C
9. power supply voltage 24V ~ 3.2V
10. shape size; 240 x 170 x 120 (mm)
(three) the device of the external component (see the seal)
Annex: sampling spoon, material trays, a handle, a pressing rod, brush.
(four), measurement methods:
1. preparation:
1) open the tool box door on the left side of the instrument and remove the attachments. Use the brush to the material trays. The mill. Measuring holes. In the upper and lower electrodes and the discharge hole clean.
2) check the meter's pointer at the scale line, if not in the starting position, the adjusting button in the middle of the meter can be slowly adjusted with a starter.
The needle is on the starting line.
3) take off the battery cover at the bottom of the instrument and load the battery (R20 two) according to the +, - level sign on the battery and back the battery cover back to the original.
4) will handle bar installed, put the tray into the receiving hole.
2. opening and adjustment
1) according to the power switch to the "open" position, the power indicator light is on, the meter pointer should be on the starting line of scale, if the pointer is lower than the starting line, adjust the knob of the zero adjustment potentiometer, and it can be adjusted up and down, so that the pointer stops at the starting line.
2) adjust the full range, press the adjusting button with the left hand, adjust the check knob around the right finger, make the meter pointer on the full scale line, release the adjustment button, and the pointer should go back to the starting line. If the fullness and starting position can be repeatedly adjusted, it is necessary to achieve the pointer indication in the correct position.
3. measurement:
1) sampling and ground sampling scoop up a spoonful of food samples (which will be mud stones, mud and other miscellaneous material removed), open mill cover, the grain mill (corn in the sample into the available balance to take 1.5 grams or a half spoon) on the mill cover, turn the crank (if the corn can be divided the mill cover with finger down the corn) slow food grains were crushed, this has fallen into the material holding plate, and the grain mill into a material containing adhesion brush with the brush plate.
2) measure the indicator value of the electric meter
The feeding tray containing crushed grain is inserted into the measuring hole, and the press bar is pressed down to the location. The pointer of the electric meter is deflected to the right angle. The indication value of the meter can be read from the starting line and the scale corresponding to the grain variety.
3) temperature correction value and calculation
Read a + or - correction value directly on the thermometer and read a small lattice up to +0.1% at the middle septum 0 (that is, the measured value of the meter plus 0.1%). Reading down from the 0 is (minus? % data). The general condition of the instrument is not 105 centigrade constant weight method. The result of subtracting the indicator value of the meter and the temperature correction value is the value of the moisture of the measured grain.
Example 1: the readings of the indicator value of the electric meter are 16.8%, the temperature correction value is -0.9%, and the grain moisture value of this variety is 15.9% (16.8%-0.9%=15.9%).
Example 2: the readings of the indicator value of the meter are 12%, and the temperature correction value is 0.7%. The water value of the grain sample is 12.8% (12.1%+0.7%=12.8), and any indicator value of the meter can be quickly calculated according to the above method.
4) results
After the measurement, the power switch is pressed "off" and the indicator light is extinguished. The instrument related parts clean, accessories and put back together to the toolbox box cover