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Grain moisture meter Model: MC-7825G multifunction for all grains
Measuring range: 6-30%
Display: LCD display
PC interface: RS232C (Software & communicating cable are optional)
Auto power off
Power supply: 4x1.5V AAA (UM-4) battery
Battery indicator: low battery indicator
Weight (not including probe):119g
Be a powerful and versatile instrument for measuring and diagnosing dampness in grains.
Widely used for fast and accurate measurement of moisture and temperature in the process of allotment, acquisition, storage, machining of packed grains.
Digital display gives exact reading with no guessing or errors while a colour coded light (LED) indicates the moisture condition of the material. This combined
presentation of moisture measurement helps the user to map the extent of problems and monitor changes in condition precisely and reliably.
Used the exclusive Micro-computer LSI circuit and crystal time base to offer high accuracy measurement. It can obtain automatically the temperature corrected
Wide measuring range and high resolution. Automatic power off to conserve power. Can communicate with PC computer for statistics and printing by the optional cable and software for RS232C interface.
Display 4 digits, 10 mm LCD
With colour coded LEDs indication
Green LED represents a safe, air-dry state.
Yellow LED represents a borderline State.
Red LED represents a damp state.
Range: average 6-30%
Accuracy: ± 0.5%n or ±0.5%
Whichever is the greater
PC interface: RS232C interface
( Cable and software is not included)
Power supply: 4x1.5 AA A size
Power off : 2 modes
Manual off at any time
Auto power off after 5 minutes from last
Temperature : 0-50 Humidity : below 90% RH
Unit 165x62x26mm or 6.5x2.4x1.0 inch
Probe 368x44x25 mm or 14.5x1.7x1.0 inch
(not including batteries but including the probe)
Standard accessories included :
Carrying case 1 pc.
Operation manual 1 pc.
Probe .............................................1 pc.
Cable and software for RS232C
4. MEASURING PROCEDURE
4.1 Depress the power key and release to power on the meter.
4.2 To check if the grain code is right by pressing and releasing the Function key. Such code can be changed by the Plus/Hold key or Minus/Zero
key when the `cdxx` is on the display. Here `cd` is the abbreviation for `code` and `xx` is the grain code no. If keep depressing the Plus/Hold or Minus/Zero key, the material code will step into next code about every second and releasing it till the grain code is right.
4.3 Grain code selection
The grain codes are listed in the table on page 7.
if the grain to be measured is not listed in the table, please ascertain its grain code among `cd01` and `cd36` by the standard oven-drying
method, that is by oven-drying of commercial samples of the grain to be measured. Write down the code for later use.
4.4 Insert the plug (3-2) of the measurer into the
probe jack (3-3).
4.5 Insert the needles into the grain to be measured.
The reading on the display is the moisture content. Read the moisture level value from the display and note the moisture condition of the material from the colour coded LED. Please note that reading will change if needles stay in grain longer.
4.5 To hold the max. value during measurements, Just depress the /HOLD key till the symbol `max` appears on the display. To display the instant values, just depress the /HOLD key again till the symbol `max` disappears on the display.
4.6 Zero calibration
The zero feature enable the user to compensate for the effect of changes in both temperature and humidity. When the probe does not touch anything besides air, the reading on the display should be `0` or `0.0` . If not, please depress and release the zero key to carry out zero calibration.
5. ALARM LIMITS
5.1 There is a coded coloured LED indicating the status of moisture. It is controlled by 2 alarm limits. The factory settings are as follow.
AL1 =13 and AL2 =18
If the reading<AL1, the green LED is on. If the reading>AL2, the red LED is on. If the reading lies between AL1 and AL2, the
yellow LED is on. Users can change the alarm limits when as per their intention.
5.2 How to set the alarm limits
5.2.1 Depress Power key and not release it till 'AL1' appears on the Display. It is about 7 or 9 seconds from starting depressing Power key.
5.2.2 'AL2 'Such value can be changed to your intended
5Appendix: Code table for Grains
Test code and grain species
Grain moisture meter:MC7821
measuring range: moisture:8～20%