Intelligent grain moisture meter, resistive grain moisture meter

Intelligent grain moisture meter, resistive grain moisture meter Zhengzhou Zhongzhuliang Instrument Equipment Co., Ltd.
Model
1. Basic indicators
, measuring varieties early indica, late indica, wheat, corn , rice, rapeseed and other granular raw grains, semi-finished grains and powdered grains.
, measurement range of grains (

), rapeseed (

)
, measurement error (
/
) "Method for Determination of Moisture in Grain and Oil Seed Inspection" shall be compared.
, power supply
(
) two batteries
, instrument working conditions, ambient temperature
, relative humidity not greater than

(
), power supply voltage
br/>, overall dimensions
(
)
, weight
The instrument is a resistive measurement and consists of a pressure conductive sensor, a DC Amplifier, indicating instrument, etc.
2.
Performance

(
1
)
,
Principle, structure
Measurement varieties< br/>Granular raw grains such as indica rice, japonica rice, wheat, corn, sorghum, millet, flour, peanuts, etc. Both semi-finished products and powder can be measured. For other grain types that do not have scale marks on the indicator instrument, you can first compare the instrument indication with the °C constant weight method to get the correction value. When using it, modify the instrument indication value according to the correction value. Get the moisture value.
Measurement range
~
The working error is within the
~
range
Within
~
,
~< br/>Within range

Repetition error
Power supply
Power supply: two AA batteries (
) (
)
Operating current
br/> br/>Ambient temperature
℃～
℃
Humidity

(
℃
Power supply voltage
～< br/>Outline dimensions
(
)
(
Three
)
Devices of external components (see back cover)
Accessory sampling Spoon, serving plate, rocker, pressure rod, brush.
(
IV
)
Measurement method
Preparation
) Open the left side of the instrument Open the side tool box door and take out the accessories. Use a brush to clean the upper and lower electrodes and material receiving holes in the material holding plate
mill
measuring hole
.
)
Check that the pointer of the meter should point at the scale line. If it is not at the starting position, use a screwdriver to slowly adjust the adjusting button in the middle of the lower part of the meter so that the pointer points at the starting line.
) Remove the battery cover at the bottom of the instrument, install the battery (two cells) according to the + and level signs on the battery and replace the battery cover to its original state.
) Install the rocker lever and hold the The material tray is inserted into the material receiving hole.
Start up and adjust
) Press the power switch to the on position, the power indicator light will light up, and the meter pointer should be on the starting line of the scale. If the pointer is lower than the starting line, adjust the zero-adjusting potentiometer knob. It can be adjusted up and down to make the pointer stop on the starting line.
) To adjust the full scale, press and hold the adjustment button with your left hand, and adjust the full calibration knob left and right with your right finger until the meter pointer is on the full scale line. Release the adjustment button and the pointer should return to the starting line.
If there are differences, you can repeatedly adjust the full scale position and the starting position, and make sure the pointer is at the correct position.
Measurement
) Sampling and grinding
Use a sampling spoon to take a full spoonful of grain sample (remove the dirt, stones, mud and other impurities in it, open the grinder cover, and pour the grain sample into the grinder) (If it is corn, you can use a scale to weigh the grams or take one and a half spoons.) Close the grinder cover and turn the handle (if the corn does not fit the grinder cover, press the corn kernels with your fingers) and slowly grind it. Grind the grain. At this time, the grain sample has fallen into the feeding tray, and use a brush to brush the grain adhered to the grinder into the feeding tray.
) Measure the indicated value of the electric meter
Put the grain into the feeding tray. Insert the grinding plate into the measuring hole, install the pressure rod and push it down to the positioning position. The meter pointer will deflect an angle to the right. The meter indication value can be read from the starting line on the scale corresponding to the grain type. .
) Temperature correction value and calculation
Read the correction value of
+
or
directly on the thermometer, and read upward one step from the middle interval
The small grid is
+
(that is, the measured meter indication value plus
). Reading from
downwards is (subtract?

data). This instrument generally does not use the
°C constant weight method for control measurement. As long as the meter indication value and the temperature correction value are added and subtracted, the result is the moisture value of the measured grain.
For example
The reading of the electric meter indication value is
, the temperature correction value
, and the moisture value of this variety of grain is
(
).
Example
The reading of the electric meter indication value is

, and the temperature correction value is
. The moisture value of the grain sample is
(
+
Any meter indication value can quickly calculate the result according to the above method.
) The result
After the measurement, turn on the power Press the switch off and the indicator light goes out. Clean the relevant parts of the instrument, count the accessories and put them back into the tool box and close the lid.