Atec 8001 Manual de usuario
Model 8001 Automated Canister Sampler
Operations and Maintenance Manual
Version 2.01
February 19, 2016
2016 ATEC, Malibu, CA 90265-2112
Atmospheric Technology i
ATEC Model 8001 Canister Sampler
Limited Warranty
Atmospheric Technology (ATEC) warrants to the original purchaser of the Model
8001 Canister Sampler that should it prove defective by reason of improper
workmanship and/or material:
Parts and Labor: For one year on all components from the date of original
purchase, we will repair or replace, at our option, any defective part without
charge for the part. Parts used for replacement are warranted for the
remainder of the original warranty period.
To obtain warranty service, return the unit to ATEC. Shipping expenses are your
responsibility. This WARRANTY DOES NOT COVER damage caused by:
modification, alteration, repair or service of this unit by anyone other than ATEC;
physical abuse to, or misuse of the unit; operation in a manner contrary to the
instructions which accompany the unit; freight damage; or any damage caused by
acts of God such as lightning or fluctuation in electrical power. This warranty also
excludes all costs arising from installation, adjustment of user controls, initial
technical adjustments (set-up) and user-required maintenance including filter
changing.
Any express warranty not provided herein, and any remedy which, but for this
provision, might arise by implication or operation of law, is hereby excluded and
disclaimed. The implied warranties of fitness for any particular purpose are
expressly limited to a term of one year.
Under no circumstances shall ATEC be liable to purchaser or any other person for
any incidental, special, or consequential damages, whether arising out of breach of
warranty, breach of contract, or otherwise.
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Atmospheric Technology iii
1. INTRODUCTION 1
2. SYSTEM CONFIGURATION 2
2.1 Hardware 2
2.1.1 System Specification 2
2.1.2 Sampler Components 3
3. RUNNING THE SYSTEM 6
3.1 Hardware Setup 6
3.2 Display and Function Tabs 6
3.3 Date and Time 7
3.4 Site Identification 7
3.5 Canister Sampling Information 7
3.6 Purge Flow 8
3.7 Abort 8
3.8 Function Tabs 8
4. PROGRAMMING THE MODEL 8001 9
4.1 Time/Date 9
4.2 Setup 9
4.3 Schedule 12
4.4 Leak Check 13
4.5 Data 13
4.6 Power Failures 14
4.7 SOP 15
4.8 Manual Mode 15
4.9 Advanced Mode 16
5. TRIGGERED SAMPLING OPTION 18
6. MAINTENANCE 23
6.1 Purge Pump 23
6.2 Canister Filter 23
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6.3 Mass Flow Controller Calibration 23
7. MODEL 8001 PARTS LIST 25
APPENDIX A –PROCEDURE FOR PRESSURE TRANSDUCER AND
FLOWMETER CALIBRATION 27
APPENDIX B INSTRUCTION MANUAL FOR MASS FLOW CONTROLLER 29
Atmospheric Technology 1
1. Introduction
This manual covers the installation, operation and routine maintenance of the ATEC
Model 8001 Automated Canister Sampler. This instrument is a microcomputer
controlled sampler that can be programmed to draw ambient air into canisters for
subsequent analysis of Volatile Organic Compounds (VOC’s) according to the
methods outlined in EPA Methods TO-14A and TO-15. The sampler can be
configured with various options to provide up to three independent flow channels.
Channel 1 is a multi-port channel containing 8, 16, or 32 ports. Each port can be
programmed to sample over a specific time period. The optional Channels 2 and 3
consist of single ports that can be activated concurrently or for different time periods
than Channel 1. All channels use separate mass flow controllers (MFC) to regulate
the flowrate. The number of ports on Channel 1 can be increased in multiples of 8
up to a total of 64 ports by adding the Model 81xx expansion modules.
The sampler has the following major features:
Channel 1 ports and Channels 2 and 3 can be programmed to sample on a
specified date (e.g. 06/01/95) for a specified duration.
Sampling date, start time, stop time, starting pressure, end pressure, average
flow rate, minimum flow rate, maximum flow rate, sampling time duration,
and error status are stored for all channels. These data can be displayed on
the screen or transferred to a computer using a jump drive. In addition,
sampling data (i.e. time and pressure) are logged at a minimum of every
minute and are included in the transferred data.
The mass flow controllers are auto zeroed prior to sampling.
A leak check option is provided to manually leak check a port or channel.
A trigger option is available to allow sampling to be started on any port or
channel from externally controlled switch closures.
Network connection to the sampler through a Local Area Network (LAN) is
available as an option. This allows remote monitoring and setup of sampling.
2Atmospheric Technology
2. System Configuration
2.1 Hardware
2.1.1 System Specification
Flow Rate: Nominal 10 cc/min (20 cc/min with pressurized
option). Optional ranges are also available.
Accuracy ±2%FS
Canister Pressure
Measurement Range: 0-30 PSIA. Accuracy ±0.25% FS
Maximum Canister
Filling Pressure: 2 psi below ambient; 45 psia (pressured option)
No. of Channels: 8 ports, 16ports, or 32 ports on Channel 1. Two other
single port channels with independent operation are
optional.
Size: 17” (width) x 19” (depth) x 7” (high)
Weight: Approximately 50 pounds
Power: 115VAC, 7 amps maximum.
(220VAC, 3.5 amps maximum)
Inlet: ¼” tubing connector.
Construction Materials: stainless steel and viton.
Atmospheric Technology 3
2.1.2 Sampler Components
This section describes the general operation and major components of the ATEC
Model 8001 Automated Sampler. Shown here is a schematic diagram of the
sampler. Air enters the sampler and passes through a stainless steel filter. When
sampling, the solenoid valve upstream of the manifold is opened. Air passes
through the mass flow controller (MFC) to the solenoid valve and into the manifold.
When a selected port is activated, the solenoid valve to that port is opened and the
air stream passes into the canister. Prior to sampling, the inlet line can be purged
for a selected amount of time. Only one port for Channel 1, consisting of two
independent solenoid valves and the canister, can be activated at a given time.
However, two optional channels can be used to obtain concurrent or collocated
samples. A microcomputer with a touchscreen display provides control and data
acquisition for the automated sampling.
The Model 8001 can also be ordered with an optional pressurization pump. The
pump is equipped with a by-pass valve to regulate the pressure. The purge pump is
4Atmospheric Technology
not used in this application because the pressure pump will purge the flow system
prior to sampling.
2.1.2.1 Solenoid Valves
One 15VDC solenoid valve is used for each port. The normally closed valve is
mounted between the sampling manifold and the canister. There is one solenoid
valve which isolates the manifold from the inlet line for leak checking and inlet line
purging. During normal sampling, both the isolation solenoid valve and the canister
solenoid valves are opened. During leak check, the isolation solenoid valve is
closed and the manifold and sampling line to an individual canister are checked for
leaks. If a small leak exists, the manifold pressure will slowly rise.
2.1.2.2 Canister Connections
Canister connections are made to the 1/8” Swaglok fittings labeled “Port 1” through
“Port 8” on the rear panel. If the optional collocated Channel 2 and Channel 3 are
present, their connections on the rear panels are labeled “Ch. 2” and “Ch. 3”.
2.1.2.3 Pressure Transducers
For the Channel 1 (mulit-port channel), a precision pressure transducer is used to
monitor the absolute pressure in the manifold connected to all the ports. To
determine the pressure in one of the canisters, the canister valve for that port must
be opened to equilibrate the manifold pressure with the pressure of the canister.
The pressure in each canister must be measured individually in this way. If the
optional collocated channels are present, there is a pressure transducer for each
channel. The pressure transducers have a full-scale range of 0-30 psia. If the
sampler has the pressurization option, the pressure transducers have a full-scalle
range of 0-50 psia. The output of each pressure transducer is interfaced to the
internal computer.
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