T
o increase throughput and precision,
an effective means of supplying tem-
perature controlled and measured water
is desired. There are two basic methods
for replacing test water:
Open Loop
In an open loop system, the water from
the bucket (and if necessary the jacket)
is drained and replaced with cool, fresh
water from the tap prior to starting anoth-
er test. If the laboratory has a supply of
good quality, cool tap water and a conve-
nient drain, an open loop system requires
a bare minimum of accessories. This is
standard for the 6200 and 6100 models.
Closed Loop
In a closed loop system, the bucket and
jacket water is recycled to a holding tank
and circulated through a cooler to bring
the water back to the desired starting tem-
perature. Users who desire more consis-
tency than tap water provides, or where
water supplies may be high in mineral
contents which over time can deposit in
the calorimeter, will prefer this mode of
operation.
Water Handling Systems
P a r r I n s t r u m e n t C o m p a n y
18
w w w . p a r r i n s t . c o m
6200 Isoperibol Calorimeter Options
Open Loop
For open loop operation in the 6200
Calorimeter, tap water is brought into the
back of the calorimeter and the heated
water is fed to the drain. Since this water
is only used for cooling the jacket, the
6200 Calorimeter can operate efficiently
with the tap water temperature up to
25 °C. Water for the bucket is normally
drawn from a faucet supply and will need
to adopt a constant and initial tempera-
ture compatible with the water supply.
Closed Loop
In the 6200 Calorimeter, the operator
must make provisions for precisely
adding the correct volume of water at
a repeatable starting temperature.
The 6510 Water Handling System uses
thermoelectric cooling and a unique glass
pipette to deliver a precise amount of
temperature controlled water for filling
the bucket and provide cooling water for
the jacket.
The 6400 Automatic Isoperibol
Calorimeter
In the 6400 Calorimeter, the water han-
dling system is built in. There is no need
for an external water handling system.
For our latest
P
arr Instrument Company is committed to a process for continually upgrading our line of oxygen bomb
calorimeters and their accessories. The information contained in this catalog and the specifications for
these calorimeters is always subject to change. In addition, new products are continually being added to
our offerings. For our most recent listings please visit our website at
.
