Increasing Gas Supply Capacity –
Two or more liquid containers may be manifolded
together. Accessory manifolds are available for use in creating a higher capacity gas
supply system. The XL-45/50/55 can supply gas at flow rates
1
up to 350 cfh @ NTP (9.2
cu.m/h @ STP) using only its internal vaporizer. At low flow rates, the gas supplied will be
at near ambient temperature. As the flow demand is increased, the gas will become
proportionately colder. If greater vaporizing capacity is required, an accessory external
vaporizer is available. When an external vaporizer is used, it must be connected to the
USE valve and the regulator moved to the output of the external vaporizer.
WITHDRAWING LIQUID FROM THE CONTAINER
Attach a transfer hose to the LIQUID connection and open the adjacent LIQUID valve.
The pressure in the container will drive liquid product out through the valve as long as the
container pressure exceeds that of the receiver.
The rate of liquid withdrawal from these contain-
ers is variable depending on the gas phase and
the saturation temperature of the liquid.
FILLING THE CONTAINER
Cryogenic liquid containers must always be filled
by weight to ensure there is enough gas head
space (ullage) for liquid to expand as it warms.
Using the procedure below, first determine the
proper filled weight of each container. The weight
derived is then used in either the Pump Transfer
of Pressure Transfer filling procedures that fol-
low.
CAUTION:
To avoid
contamination, close
the LIQUID valve on
an empty container
before disconnecting
the transfer line.
Vaporizer
Performance
Graph
Liquid
Withdrawal
