EST Encon Evolution, User Manual

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Figure 3g: Economy Mode screen
Standby Flow (ml/min) – The rate at which the gas flows through the sample pathway
while the instrument is in standby and purge ready. This parameter is off (no standby
flow) or on with a programmed value of 0 – 500ml/min using the up/down selection
arrows.
Automatic Drain Sparge Vessel – Select On and the Encon EV will drain the sample
from the sparge tube at desorb. Select Off and the Encon EV will not drain the sample
from the sparge tube.
NOTE: If the drain function is off and the Encon EV has the Sample Heater
option installed and turned on, the sample must be manually drained at desorb.
Bake Gas Bypass – Select Off and during bake the gas flow pathway will be through the
sparge tube. Select On and during bake the gas flow pathway will be diverted and not
flow through the sparge tube.
Transfer Line Temperature (
° C) – This is the temperature of the transfer line which
connects the Encon EV to the GC Inlet. This parameter can be set to a temperature
between 35°C and 350°C in 1°C increments using the up/down selection arrows
Valve Oven Temperature ( ° C) – This is the temperature of the oven which contains the
8 port rotary valve and sample pathway tubing. This parameter can be set to a
temperature between 35°C and 350°C in 1°C increments using the up/down arrows.
Auto Sample Prep Time (min) – When connected to an autosampler, the Encon EV can
be programmed to send out a decoy ready signal to the autosampler to begin the sampling
process before the concentrator reaches the purge ready status and sends out the true
ready signal to the autosampler. This is useful with syringe style auto samplers where it
may take several minutes to complete the transfer of sample from the autosampler to the
Encon EV. This can reduce overall cycle by the time it takes the autosampler to process a
sample.