Parr Instrument 6200 User manual

6200 Calorimeter
Operation
Parr Instrument Company

Goal
Learn how to run a
test on a Parr 6200
Calorimeter with a
standard 1108 Oxygen
Bomb.

Warning!
It is important that the Operating
Instruction Manual be read and
understood (especially the safety
instructions) before using the calorimeter.
Failure to do so could result in
catastrophic failure.

Step 1
Turn on the calorimeter
The calorimeter will boot
up to the main menu.
Turn on the Oxygen
Supply.

Step 2
 Go to the CalorimeterGo to the Calorimeter
Operation menu.Operation menu.
 Turn on the Heater andTurn on the Heater and
Pump.Pump.

Note:
The Start will be grayed out when
the calorimeter is not ready to
run a test.
The jacket temperature must be at
30°C.
Once the jacket temperature is at
30°C it will be an additional 10
minutes before the Start function is
available. This is true only if the pump
and heater have been off for an extended
period of time.

Step 3
Prepare a Sample
Tare (zero the weight of) a
sample cup.
Weigh a sample to the
nearest .0001 g

Step 4
Put the sample on the head
Attach a fuse wire.
The fuse wire should touch the
top of a solid pellet.
The fuse wire should not be
buried in a powder or granulated
sample.
The fuse wire can touch a liquid
sample or be positioned just
above the surface of the sample.

Step 5
Load the head into the bomb
cylinder
Place the head into the
cylinder.
Screw on the cap as far as it
will go. Do not over-tighten.

Step 6
Place the Oxygen Fill
Connection on to the 1108.
Press the O2 Fill button on
the Calorimeter Operation
screen.
Oxygen will flow into the 1108.
A timer will count down the fill time.
Pressing the O2 Fill key while the timer
is counting down will abort the fill
process.

Step 7
Fill the bucket with 2 liters
(2000 ±.5 g) of water.
Using the same amount of
water each time is critical.
Place the bucket inside the
calorimeter.
Note: There are three plastic
pieces in the bottom of the air
can that line up with the
depressions in the bottom of the
bucket.

Step 8
Using the bomb lifter
position the bomb part way
into the bucket.
Attach the ignition wires to
the terminals on the 1108
bomb head.
Try to avoid getting your
fingers wet.

Step 9
Lower the bomb the rest of the
way into the bucket.
Note that the bomb will sit on the embossed
circle on the bottom of the bucket.
Observe the bomb to make sure
that there are no oxygen leaks.
Do NOT continue if there are
bubbles coming from the bomb!

Step 10
Close the lid making
sure that neither the
stirrer or the bucket
thermistor are touching
the 1108 bomb or
bucket.

Step 11
Choose Standardization (calibration) or
Determination (unknown samples) for
Operating Mode.
Press Start.
Input the Sample ID.
Input the Bomb ID.
Input the Sample weight.
Input the Spike weight (if spiking is turned on).

Step 12
The test will automatically proceed
through the following steps:
Preperiod Cycle
Fire the sample
Post Period Cycle

Step 13
Results
Once the calorimeter is finished with the
post period cycle the results will print out on
the printer or display on the touch screen.
Once the test results have been printed
or displayed the calorimeter will be ready
for the next test once the next sample is
ready.

Step 14
Open the lid and remove the bucket with the
bomb.
If another bomb and bucket combination is ready it
may be put in at this time and go to step 8.
Remove the 1108 bomb from the bucket and
release the pressure by loosening the valve
knob.
If you are analyzing the bomb rinse water then
release the pressure slowly (over not less than one
minute) to avoid entrainment losses.

Step 15
Fuse correction determination.*
Remove the unburned remains of the
fuse wire.
Measure the unburned length and subtract
from 10 cm. Multiply this by 2.3 cal/cm to
get the result.
The 45C10 Fuse Wire card may be used to
directly measure how many calories the
fuse wire contributed.
*This step can be skipped if you are using a fixed fuse correction.

Step 16
Rinse the bomb head and
cylinder.
Use distilled water and rinse
thoroughly.
Save the rinse water for further tests
as required.
Dry the bomb head, cylinder and
screw cap.
The bomb is now ready to
prepare for the next test.