Parr Instrument 6725 - Manual (Page 7)

6725
Semi-micro Calorimeter Instruction Manual
2-1
INSTALLATION
The 6725 Semi-micro Oxygen Bomb Calorimeter is to be used indoors. It requires at
least 4 square feet of workspace on a sturdy bench or table free from room drafts or
radiant heat sources, (preferably in an air conditioned room providing minimal
temperature change), an electrical outlet, a supply of water which is at least 1 °C cooler
then room temperature and a waste drain will be required. The supply voltage must be
within ± 10% of marked nominal voltage on the apparatus. The supply voltage
receptacle must have an earth ground connection.
Other necessary accessories include:
• Oxygen tank of 99.5% minimum purity
• Chemical balance sensitive to 0.1 mg
• Top loading balance capable of weighing up to 1.5 kg with a sensitivity of 0.1g
Unpack the calorimeter carefully and check the individual parts against the packing list.
If shipping damage is discovered, report it immediately to the delivery carrier. Handle
the Dewar flask and the thermistor probe with care as these parts are fragile and easily
broken.
Set the calorimeter on a bench or table in a location that is free from drafts and protected
from sources of radiant heat. Temperature changes in the room should be minimal.
Power Connection
Plug the power line into any grounded outlet providing proper voltage that matches the
specification on the nameplate of the Calorimetric Thermometer. The calorimeter will
draw approximately 100 watts of power. Grounding is very important not only as a
safety measure, but also to ensure satisfactory controller performance. If there is any
question about the reliability of the ground connection through the power cord, run a
separate earth ground wire to the controller chassis.
Turn the power switch to the on position. After a short time, the Parr logo will appear on
the LCD display followed by a running description of the instrument boot sequence.
When the boot sequence is complete, the 6772 Calorimetric Thermometer Main Menu is
displayed.