DAK 900-EH Series User manual

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Series 900-EH
Electronic Densimeter
Dak System Inc."""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
PC
Printer Densimeter

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TOPICS
PAGE NO.
The Densimeter- At a glance
4
The Set up Protocol
5-6
Salient Features of Series 900EH
7
Solid Mode
8
Liquid Mode
8
Operating Instructions for DAK Densimeter
8
Operating Modes
9
Measuring Modes
9
Setting Modes
10
General Setting Menu.
10
Set Liquid Type
11
Comparator Function
11
Lead Zero Blank
12
Back Light Option
12
Key Beep Set
13
Stability Range
13
Auto Power Off
14
Printing Mode
14
Print Baud Rate
15
Device ID
15
Set Time & Date
16
Re-Print Result
16
Calibration
17
Configuration Menu
17
Alloy SG Set
17
Comparator Set
18
Temperature Compensate
18
Liquid SG Set Mode
19
To Measure Density
20
Solid Mode
20-21
Liquid Mode
21-22
How to Compensate Liquid Sample Temperature
23
Steps of Measurement
24
Special Measurement Cases:
25
To Measure A Floating Sample
25
How To Measure The Pellet
25-26
Alloy Mode
27
PC Operation through DAK Densimeter Data Analysis Software
28
Densimeter Assembly Directions
29-31

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The Densimeter- At a glance.
1 2 3 4 5
6 7 8 9
1.
AC Mains Chord
6.
Thermometer
2.
Air Tight Wind Shield
7.
Tweezers
3.
Metal Angle (optional)
8.
Water Tank
4.
Sensor
9.
200 gm Standard Weight For Calibration
5.
Holder & Support

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The Set up Protocol
1- Place the unit on a stable location where there is no Vibration or airflow.
2- This unit is equipped with a Spirit Level on the front left bottom corner, twist the adjustment on the underside so
that the tear drop falls in the centre of the circle, twist it clockwise to increase the height and anti-clockwise to
reduce the height.
3- The unit comes along with the Support and the Holder, and the user must ensure that the Support and Holder do
not touch each other.
4- The Air tight Windshield should be set up as per the manual and the unit and Shield should be set correctly
5- Fit the underside convexities of the Water tank on the concavities of the Holder. .
6- The water should be poured up to the inner line of the water tank.
We Suggest:
• It is desirable to use distilled water however using tap water should not make much difference in the measurement.
• The volume of water in the container should be carefully monitored, the sample under test should sink completely
in water to avoid inaccurate results.
Inner Line
HOLDER
SUPPORT

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7- Fit the Support’s rail line carefully; take the lid off to sink the Measuring Tray in to water
8- Air bubbles and Oil on the sample will produce buoyancy in water and these could be factors leading to inaccurate
results.
We suggest: You could put a few drops of the mild detergent in the Water tank. This could help remove the bubbles
and oil.
9- At last attach the Upper lid and front panel and the set up is completed
SENSOR

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Principle: According to ASTM, JIS, GB/T, ISO standards, adopting the buoyancy method and the water
displacement method of Archimedean principle, can accurately and directly measure the value of density.
Salient Features:
Result with comparator mode is available.
Density of floating object can be measured.
Styrol Water Tank enables use of ethanol as liquid medium.
Measuring the change rate of density.
Easy connection to PC with USB 2.0 Interface.
900-EH can measure Solid & Liquid. In Liquid Mode it can measure the compensated liquid density by
setting compensated liquid temperature & compensating temperature rate.
900-EH Density & Volume resolution 0.001.
Easy operation by just putting the sample on container and then into the water for Solid, Pellet, Film,
Floating-body, Liquids
Measuring range increased up to 300g
Substantial function of Solid and Liquid measurements
Shorter measuring time (about 10 sec)
Comparator function is available with buzzer sound (optional).
Optional setting is available for development of new material. (Solid mode)
Large and floating objects can be measured easily with new bigger square container and water tank.
Ethanol can be used as a liquid medium with improved standard water tank made with Styrol.
For measuring specific gravity of rubber, plastics, metals, and much more
Density resolution: 0.001g/cm3
A general-purpose new Densimeter with high accuracy and additional !advanced features.
Salient features of Series 900-EH
Electronic Densimeter
Dak System Inc.

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SOLID MODE: !
Capable of measuring volume variation factor.
Capable of indicating errors for the measured value.!
Capable of setting measurement time at will.
Capable of compensating water temperature at will: capable of compensating water temperature, required
for the measurement of the specific gravity!
Capable of measuring plastic pellets!
Capable of measuring readily floating samples, such as urethane rubber, plastics, sponge, and wood.
LIQUID MODE:
Volume of sample needed for measurement is about 50cc.
To measure different samples successively, just simply replace the beaker.
A measurement result represents only value obtained through measurement at room temperature.
Operating Instruction for DAK Densimeter.
There are 5 keys for operating the Densimeter. They are as follows:
1. Power key – This key is used for Switch On & Switch Off purpose.
2. Key A – This key is used for “INCREASING” any numerical value such as time, date, temperature etc. This
key can also be used for moving “UP” in the menu option.
3. Key B – This key is used for “DECREASING” any numerical value such as time, date, temperature etc. This
key can also be used for moving “DOWN” in the menu option.
4. Tare – This is mainly used as Tare i.e. for setting the zero value before the test. It can also be used for
shifting the cursor or moving “BACK” from any menu option.
5. Enter – This key is used for approving the readings. This is also called as “OK” Key, it can also be used

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Operating Modes
There are 4 types of operating modes. They are as follows:
1. Idle / Default Mode –This is the default/ stand by mode of the Densimeter.
2. Density Measuring – This mode is used for measuring the density of the specimen.
3. Gen Set Mode – This mode is used for changing the various settings in the Densimeter.
4. Calibration Mode – This mode is used for calibration of the Densimeter before taking the readings of the
samples.
5. Configuration Menu – This mode is used for configuring Alloy mixtures values, temperature compensation
etc
Measuring Modes:
There are 5 types of measuring modes. They are as follows:
1. Solid Density – The density of solid material can be measured in this mode.
2. Liquid Density – The density of liquid can be measured in this mode.
3. Alloy 1 Density – The density of any mixture can be measured in this mode.
E.g.: Considering Aas mixture of B& C. Density of A, B & C can be measured.
Thus this can also be used for detecting the purity of the sample for which the test is been performed.
4. Alloy 2 Density – The density of any mixture can be measured in this mode.
5. Alloy 3 Density – The density of any mixture can be measured in this mode.
6. REF. MEM. MODE.
To Change Measuring mode:
1. From Idle mode keeping “A” pressed, click “B” Key till you reach your desired mode of measurement.
2. Subsequent presses will change the measuring mode in rotation.

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Setting Modes:
In setting modes, press Enter to dig in a menu option and tare to go back to the parent menu option.
Use A to scroll up and B to scroll down.
Types of menu:
1. General Setting Menu
2. Configuration Menu
To enter General Setting Menu press B from Idle-mode. The options are as under:
GEN. SET MENU:
Press Key “B” till “Gen. Set Menu” appears on the screen
1. Set Liquid Type (Water /As Per Set SG)
2. Comparator Function - (Disable/Enable).
3. Lead Zero Blank (Disable/Enable).
4. Backlight Light Option (Off / 2/4/6/8/10 Sec / Continuous On).
5. Key Beep Set (Disable/Enable).
6. Stability Range (O 5g / 0.5sec) (1.0g / 0.5sec.) (2.0g / 0.5sec) (3.0g / 0.5sec)
7. Auto Power Off (Disable/Enable).
8. Printing Mode (Off / Auto / Manual) (To Be Implemented).
9. Print Baud Rate (9600 / 19200)
10. Device Id (Enter Value Using Inc/ Dec / Shift / Enter).
11. Set Time & Date
12. View Time & Date
13. Re-Print Result

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SET LIQUID TYPE
- After entering the Gen Set Menu
- Select “SET LIQUID TYPE”
- Press “Enter”
Select the option “WATER or AS PER SET SG” by pressing keys “A” or “B”, press “Enter” to confirm.
Importance of AS PER SET SG:
In cases where liquid in use is not Water you can enter the SG of this liquid in the “Configuration Menu” as
explained above and select this liquid in the Set Liquid Type option to proceed with this liquid.
COMPARATOR FUNCTION
-After entering the Gen. Set Menu
- Select “COMPARATOR FUNCTION”
- Press “Enter”
- Select “DISABLE or ENABLE” by using keys “A” or “B”
- Press “Enter” to confirm

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LEAD ZERO BLANK
Importance: This option is mainly for users who want the reading up to 3 digits before the decimal point.
E.g. Reading for the sample is 3gms
a) If Lead Zero Blank is “Disabled” then the reading would be displayed as 003.00g
b) If Lead Zero Blank is “Enabled” then the reading would be displayed as 3.00g
- After entering the Gen Set Menu
- Select “LEAD ZERO BLANK”
- Press “Enter”
- Select “DISABLE or ENABLE” by using keys “A” or “B”
- Press “Enter” to confirm
BACKLIGHT LIGHT OPTION
Importance: This option is for timing of the display back light. Depending on the requirement you can select the
display light mode from 2 to10 seconds or keep it “Off”/ “On” continuously.
- After entering the Gen Set Menu
- Select “BACKLIGHT LIGHT OPTION”
- Press “Enter”
- Select out of the following options: 2 sec/ 4 sec/ 6sec/ 8sec/ 10sec/Continuous On/OFF
The options can be viewed by pressing the key “A” until you reach the required field and Press “Enter” for
confirming the same.

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KEY BEEP SET
Importance: For a buzzer sound of every click the user makes, this ensures the confirmation of that click. However
the user can also switch it this sound off in case not required.
- After entering the Gen Set Menu
- Select “KEY BEEP SET”
- Press “Enter”
- Select “DISABLE or ENABLE” by using keys “A” or “B”
- Press “Enter” to confirm
STABILITY RANGE
Importance:
There are 3 options of stability provided to the user for selecting the desired stability range
(10mg / 0.5sec.) (20mg / 0.5sec) (30mg / 0.5sec)
- After entering the Gen Set Menu
- Select “STABILITY RANGE”
- Press “Enter”
- Select out of the following options: (10mg / 0.5sec.) (20mg / 0.5sec) (30mg / 0.5sec)
The options can be viewed by pressing the key “A” until you reach the required field and Press “Enter” for
confirming the same.

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AUTO POWER OFF
Importance: This is a power saving option. On enabling Auto Power Off the equipment switches off
automatically if it remains un-operated for 30mins.
- After entering the Gen Set Menu
- Select “AUTO POWER OFF”
- Press “Enter”
- Select “DISABLE or ENABLE” by using keys “A” or “B”
- Press “Enter” to confirm
PRINTING MODE
Importance: This is the print option in which the user can print results by using any of the 3 options:
a) Auto- Here every result is printed immediately after the test.
b) Manual - Only those results which are required are printed,
Procedure: Activate Manual Print
Conduct the test
If you wish to print this result, go to “Gen Settings”, go to “Re-print result”
Press “Enter” and the last result obtained will be printed.
c) Off- No printing will issued.
How to go to the above option:
- After entering the Gen Set Menu
- Select “PRINTING MODE”
- Press “Enter”
- Select out of the following options: (Off / Auto / Manual)
The options can be viewed by pressing the key “A” until you reach the required field and Press “Enter” for
confirming the same.

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PRINT BAUD RATE
Importance: For operating the Printer the user needs to configure the Densimeter with a Baud rate required for
Printer operation.
- After entering the Gen Set Menu
- Select “PRINTING MODE”
- Press “Enter”
- Select out of the following options: (9600 / 19200)
The options can be viewed by pressing the key “A” until you reach the required field and Press “Enter” for
confirming the same.
DEVICE ID
Importance: In case the user has more than one Densimeters we have a provision for a Device ID, where you can
enter an Id up to 3 digits as per your requirement.
- After entering the Gen. Set Menu
- Select “DEVICE ID”
- Press “Enter”
- 001 will be the default id, you can change by using keys “A” or “B” to Increase or Decrease the number
respectively and the “Tare” key can be used to shift the digit place from first to second and so forth
E.g. 001 press Tare once to shift the cursor to the right 001

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SET TIME & DATE
Importance: This option can be used to set the Date and time of operation which in the Idle mode can also be used
as a Digital Table Clock.
-After entering the Gen Set Menu
-Select “SET TIME & DATE”
-Press “Enter”
-The cursor appears under the Date digit, use keys “A” or “B” to change the numbers, to shift the cursor to the
Month digit press “Tare” and enter digits using the same process as date to change the number and press
“Tare” again for shifting the cursor to the Year digit and use keys “A” or “B” to change the numbers for
entering the year.
After setting the Date, press “Enter” and you will automatically go to the Time setting menu.
-Enter hours
-Enter minutes
-Enter seconds like date was entered
-This in the Idle mode can also be used as a Digital Table Clock.
RE-PRINT RESULT
-This function is to re-print the last obtained result when print settings are in the Manual Mode
-After entering the Gen. Set Menu
-Select “RE-PRINT RESULT”
-Press “Enter” to re-print the last result.
*Note: This option will be enabled only if “Print” option above is Enabled.
*Kindly note: All the measurements, including the calibration process should be done with the Windshield
On the equipment to ensure no atmosepheric disturbance and accurate results. The images in this manual
are shown without the shield to give a closer view of the process.

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Calibration
Step 1 Step 2 Step 3
Calibration is the most important procedure required for finding the % accuracy of the results, especially if
the equipment is moved or shifted. Hence to ensure accuracy this step should be performed.
The steps for the calibration are as follows:
From the Idle Mode press A + Enter (for 3 seconds) key till you enter into the Calibration mode.
1. Place 200 grams weight in aerial mode
2. Press Enter key when prompted and it will display – “Please Wait”
3. Remove the weight
4. Press Enter key when prompted.
To Tare: From Idle mode, press the “Tare” key.
Configuration Menu:
Press “TARE + Key A” to enter this menu.
1. Alloy SG Set
2. Comparator Set
3. Temperature Compensate
4. Liquid SG Set
1. Alloy SG Set:
Configuration Menu Alloy SG Set
-Press “Tare + Key A” till you enter into the “Configuration Mode” to set the SG values of the constituents of
which your test sample is composed of.
E.g. : For Alloy 2: Press “A” & “Tare”
-Select the first option “Alloy SG Set” by pressing “Enter”
-For entering the SG value of the constituents of the respective alloy number e.g. Alloy 2 use keys “A” or “B” to
values 2A, press enter on 2A
-Enter the SG for constituent 2A by using the Keys “A” or “B” to enter the required digit, note Key B reduces the
value in the descending order like 8,7,6 … and by pressing Key A the digit value can be increased like 5,6,7..To
shift the digit cursors press “Tare” till to shift the cursor to the required digit, which you wish to change. Follow
similar procedure for entering values for Alloy 1 and 3. After entering values for 2A and 2B press “Enter” to
continue.

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2. Comparator Set:
Importance: This function enables to the user to set limits for the readings of that particular batch of samples. Once
he enters the upper and the lower limits, a range has been defined for the reading, if this crosses the upper side then
there will be and indication of “HI” and if on the lower side then it will show “LOW” and an “OK” if the result falls
in the defined range, this gives the user ready to use interpretation and a remark which can be printed and saved for
future reference.
Configuration Menu Comparator Set
-Press Tare and Key A till you enter the Configuration Menu.
-Press Key A to reach the “Comparator Set” option
-Set the Comparator “Hi” value by using the Keys A or B to change the numerical value accordingly, press
“Enter” after the “Hi” value is set.
-Now set the Comparator “Lo” value by using the same keys as above and press “Enter” after setting the value.
-In every mode, if Comparator is “ON”, then HI / OK / LO indication will be displayed after every measurement
result and same status is sent to printer.
3. Temperature Compensate:
Importance: When the liquid used for measurement is at a sub-normal temperature then this feature enables the
user to enter this Temperature for the liquid so that the density measurement is calculated compensating this
difference in temperature.
Configuration Menu Temperature Compensate
Press “Tare + Key A” to enter the “Configuration Menu”
Go to “Temperature Compensate” by using keys “A” or “B” till you reach this Option.
There are two options here Temperature compensate for:
-Water
-Any other liquid as per the user
For Water:
After entering the Temperature Compensate mode, click “Enter” on Water
Enter the values in “Water Actual Temperature” by using keys “A” or “B” and press “ENTER”
Enter the values in “Water Compensate Temperature” by using keys “A” or “B” and press “ENTER”
For any other Liquid:
After entering the Temperature Compensate mode, click “Enter” on Liquid Temperature Compensation
Enter the values in “Liquid Actual Temperature” by using keys “A” or “B” and press “ENTER”
Enter the values in “Liquid Compensate Temperature” by using keys “A” or “B” and press “ENTER”

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4. Liquid SG Set Mode:
Importance: If the liquid used during testing is other than Water then you can set the specific gravity of the
liquid in use with this option. The Density for sample under test is calculated accordingly.
In this you can set the SG of the liquid in use.
Configuration Menu Liquid SG Set Mode
Press “Tare + Key A” to enter the “Configuration Menu”
Go to the Liquid SG by using keys “A” or “B” till you reach this Option
Press “Enter”
Set the required SG value in this option by using keys “A” or “B” to change the numerical values, after setting these
values press “Enter” to continue.

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To Measure Density:
1. Solid Mode:
Assumed that all the mechanical arrangements are with respect to solid mode you can start the measurement
by following the below steps:
Step 1 Step 2 (a) Step 2(b) Step 3
Step 4 Step 5 Step 6 (a) Step 6 (b) Step 9
1. Hold the Solid sample by means of a Tweezers displayed in step 1 above.
2. Place the weight in the centre of the upper cover like shown in the above display to measure the weight in
Air (Shown above in Step 2 (a & b)
(Suggest: When placing the sample get rid of the bubbles on the sample by shaking it slightly in water, as
bubbles might cause interference in the accuracy. Alt sample can also be washed in Ethanol before sinking in
water, as it is alright to sink the sample in water with ethanol remaining on its surface)
3. Press OK & wait till aerial weight is displayed, press OK to proceed after the “*” appears on the display
readings.
4. Remove the weight by using the Tweezers like in the above Step 4
5. Open the Flap Cover to proceed to measure weight in Liquid.
6. Place the weight in Liquid in the Centre space (shown in image Step 6 a & b)
7. Press OK and wait till reading is complete, liquid weight is displayed, press OK to proceed after the “*”
appears on the display.
8. Density & Volume results are displayed, press OK to continue, this transmits the data to printer & PC.
9. Remove the specimen from the liquid using the Tweezers as shown above.
Caution: This is an electronic device and water spillage may cause its failure. When re-measuring the same
sample, dry it up again without fail.
Necess