GAOTek Moisture Analyzer with High Precision (Automatic Peeling)

Additional Information

Ordering Information:

 Accessories:

• Moisture Analyzer
• Draft shield
• Sample pans
• Pan support
• Scale pliers
• Weight pliers
• Weight 0.35 oz./1.76 oz./3.53 oz. (10 g/50 g/100 g)
• User manual
• Power cable

Selecting the Location:

• Operate the Analyzer on a firm, level surface.
• Select a location that is safe and with adequate ventilation. Fire, corrosive or toxic fumes and other hazards associated with the test samples will require specially prepared locations.
• Ensure that the location has easy access to the local AC power supply.
• Avoid locations with rapid temperature changes, excessive humidity, air currents, vibrations, electromagnetic fields heat or direct sunlight.

Installing Components:

1. Install and position the Draft Shield
2. Install the Pan Support, turn until it engages into position
3. Place a sample pan over the pan support

Connecting Power

Verify the input voltage printed on the voltage identification label information and the plug type matches the locations AC power supply.

Connect the given power cable to the power input receptacle at the rear of the Analyzer and into a properly grounded power outlet.

After connecting the Analyzer to the AC supply (standby mode), allow the Analyzer to warm up for at least 30 minutes for best results.

 Controls:

Button	Name	Quick Functions	Button	Name	Quick Functions
	On/Off	On (short press)/Off (long press)		Set	Increase value (short or long press)
	Tare/Back	Tare (short press) Back (short press)		Set	Decrease value (short or long press)
	Temp	Temperature Setting (short press)		Print/Cal	Print (short press) Calibrate (long press)
	Time	Time Setting (short press)		Test	Start to test (short press)

 Operating Modes

Standby Mode:

When the Analyzer is connected to AC power and the display is off, the unit is in Standby mode.

• Start (Short press): Turn on the display and enter the Weigh mode.
• Print (Long press): Displays the RS232 settings. Further, (Short press) Re-enters Standby mode (off).

Weigh Mode:

The display shows the weight of items placed on the pan support.

• Tare (Short press): Set the display weight value to zero
• Start (Long press): Enters Standby mode (Off)

The following operations can be initiated:

• Temp (Short press): Enter into Edit mode for the temperature setting and the value blinks
• Time (Short press): Enter into Edit mode for the time setting and the value blinks
• Start (Short press): Activates Run mode, initiates test with a sample greater than 0.5 g
• Cal (Long press): Initiates weight or temperature Calibration.

Temperature / Time Edit Mode (Preparing a Test)

Temperature editing: (50 °C to 160°C in 5° steps)

• Temp (Short press): Enter into Edit mode for the temperature setting and the value will blinks.
• Set (Short or long press): Increases the value of the temperature setting.
• Set (Short or long press) Decreases the value of the temperature setting.
• Tare (Short press): Accepts the blinking value and returns to weigh mode.
• Start (Short press): Exits Edit mode without saving changes.

Note: After 5 seconds of idleness the blink setting is automatically saved and returns to weigh mode.

Run Mode (Performing a Test)

A moisture determination test is initiated. The results in progress are displayed.

• Start (Short press): Activates Run mode, initiates test with a sample greater than 0.5 g
• % g: Changes the unit of the displayed result: weight (grams) > % Moisture > % Solids.
• Stop (Short press): Manually stops the test in progress.
• Print: Send the current displayed value to the RS232.

Result Mode:

At the end of the test (Run Mode), the display blinks the test result.

• % g: Changes the unit of the displayed result: weight (grams) > % Moisture > % Solids.
• Tare: Exits to weigh mode.
• Print: Sends the current displayed value to the RS232.

How to Prepare a Test

Moisture determinations can be made in simple steps. The three steps are:

(1) Setting the drying temperature.

(2) Setting the drying time.

(3) Preparing the sample to be tested.

• Place the Pan Handler with empty test pan on the Pan Support.
• Press Tare and zero out the pan weight.
• Remove the test pan and place the test sample on to the test pan. The sample must be greater than 0.5 g.
• Spread the sample evenly across the test pan.
• Place the test pan with the sample on the Pan Support. The weight value of the sample will be displayed.

How to Perform a Test:

1. Close the Heater Cover.
2. Press Start to begin the test (press Start again to stop the test in progress).
3. When the test is over, the display will blink showing the final result.
4. To change the displayed units, press %, g.
5. To print the current displayed value, press Print.
6. Press Tare to exit to weigh mode.

Performing a Trial Test

Prior to actual testing, a test run can be performed with these suggested settings:

1. Temperature = 120
2. Time = AUTO
3. Sample = 3 g of water. Place a glass fiber pad (included with the Analyzer) on the test pan, place on the Pan Support. Press Tare to zero the pan weight. Add 3 g of water to the fiber pad.
4. Press Start to initiate the test. A perfect result on the trial test would be: 0g, 100% moisture or 0% solids.

TEST OPTIMIZATION

Moisture is determined from the weight loss of a sample dried by heating. The speed and quality of the measurement process will rely on the following parameters. Experimentation will also help ascertain the optimal setup of these parameters:

• Drying temperature
• Drying time
• Sample weight
• Sample preparation
• Type of sample

Sample Weight:

 Types of Samples:

• Liquid substances
• Skin-forming and temperature sensitive substances
• Sugar-containing substances
• Volatile substances
• Poisonous and toxic substances
• Corrosive substances

Communication:

RS232 Pin Connections:

Female DB9 connector:

• Pin 2 Analyzer transmit line (TxD)
• Pin 3: Analyzer receive line (RxD)
• Pin 5: Ground signal (GND)

Trouble shooting: