Section 5: Integrated Gas Sampling
Airmetrics
37
To operate in Standard Mode:
!
Plug the solenoids into desired positions 1-4.
!
Remov e Overlap Ju mper.
!
Advance to desired starting channel with Manual Advance Button.
Note:
The Manual Advance only functions when the pump is off. Each
time the pump is turned off, the channel advances automatically.
!
Set timer as desired.
Active Solenoid Output Indicators in standard mode:
'
"""
channel 1 on
"
'
""
channel 2 on
""
'
"
channel 3 on
"""
'
channel 4 on
Example 1:
We w ish to take tw o CO sample s, one ba g filling from 7:00 am to
3:00 pm, and the second from 3:00 pm to 11:00 pm.
1) Plug b ag 1 solen oid into So lenoid O utput Co nnector 1 ; plug bag 2 soleno id
into Solenoid Output Connector 2.
2) Set the timer: set timer Program 1 to turn on at 7:00 am and off at 3:00 pm.
Set timer Program 2 to turn on at 3:01 pm and off at 11:00 pm. The one
minute delay between the first program's off time and the second program's on
time is necessary to advance the sequencing valve to the next cycle.
Example 2:
We wish to take two CO samples (from 7:00 am to 3:00 pm, and from
3:00 pm to 11:00 pm) while also collecting a PM
10
sample from 1:0 0 am to
11:00 pm.
1) Plug b ag 1 solen oid into So lenoid O utput Co nnector 2 ; plug bag 2 soleno id
into Solenoid Output Connector 3.
2) Set the timer:
Airmetrics MiniVol Users Guide
38
Airmetrics
a) Set timer Program 1 to turn on at 1:00 am and off at 7:00 am. During
this program, neither bags will be filled but air will be drawn through the PM
10
filter.
b) Set time r Program 2 to turn on at 7:01 am and off at 3 :00 pm . Air will
be drawn through the filter and bag 1 will be filled.
c) Set time r Program 3 to turn on at 3:01 pm and off at 1 1:00 pm . Air
will be dra wn thro ugh the filte r and bag 2 will be filled during this
programmed step.
In
Overlap Mode
the sampler can be set to overlap the sampling periods for the
bags. For example; the operator could set the sampler to collect air in one bag
from 10:00 am to 6:00 pm and in the other bag from 3:00 pm to 11:00 pm. During
the overla pping pe riod from 3:00 pm to 6:00 pm the sam ple wou ld be collec ting air
in both bags simultaneously.
To operate in Overlap Mode:
!
Plug solenoids into positions 2 & 4.
!
Place the Overlap Jumper on the p ins.
!
Advance to channel 2 with Manual Advance Button.
Note:
The Manual Advance only functions when the pump is off. Each
time the pump is turned off, the channel advances automatically.
!
Set timer as desired.
Active Solenoid Output Indicators in Overlap Mode:
'
"""
channel 1 on (this setting does nothing)
"
'
""
channel 2 on
"
'''
channels 2 & 4 on
"""
'
channel 4 on
Example:
We wish collect air in one bag from 10:00 am to 6:00 pm and in the
other bag from 3:00 pm to 1 1:00 pm.
