22 Years of Excellence! © 2010 Teledyne Technologies Introducing the Model 602 Beta PLUS...
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Transcript of 22 Years of Excellence! © 2010 Teledyne Technologies Introducing the Model 602 Beta PLUS...
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Introducing the Model 602 BetaPLUS Dual-Channel
Particulate Monitor
San Diego, California4 February, 2010
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
What is the Model 602? • The Model 602 is a dual-channel, 14C Beta Gauge with
less than 100 μCi. • It uses cartridge filters as opposed to a filter tape.• The sample time is nominally 1 hour. But, it can be
modified for other averages (up to 72 hours).• The autonomy period is 15 days (worst case) and 48
days (nominal)• The system operates at ambient temperature and
humidity.• Virtually any operating parameter is available from
RS232 or using the optional internal modem. • Internal modem can dial telephone numbers if any
warning occurs.
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
What is the Model 602?
• Really, the Model 602, in it’s typical configuration, is two instruments in one:
– A PM10 Beta Guage– A PM2.5 Beta Guage
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
What is the Model 602?
• In the 24-48-72-hour mode, it is four instruments in one:
– A PM10 Beta Guage– A PM2.5 Beta Guage– A PM10 Sampler– A PM2.5 Sampler
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
What is the Model 602?
• The analyzer has three pumps.– Two sample pumps– Compressor to operate the filter changer
Sample Pump Compressor
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Certifications
• The instrument has “EuroNorm” certification under…– EN12341-1999 (PM10)– EN14907-2005 (PM2.5)– TAPI is conducting US EPA certification tests
(Summer 2010).
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Philosophy
• The Model 602 is designed to isolate and counteract the known causes of uncertainty in a β attenuation measurement.
– Flow uncertainty– Detector performance– Humidity– Sample density– Semi-volatile deposition “boil-off”– Background radiation
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Why is the Model 602 called a BetaPLUS ?
Because it is the best, most accurate dust monitor ever built.
Period.
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Why is the Model 602 called a BetaPLUS ?
• Complete air density analysis.– Benefit: Eliminates the uncertainty related to the quantification
of “cubic meters” and flow errors.
• Complete detector performance analysis.– Benefit: Uncertainties in detector performance, leading to false
concentrations, are eliminated.
• “Spy” filter.– Benefit: Completely eliminated biases due to moisture in the
sample. Provides a zero reference.
• Simultaneous PM2.5 and PM10 measurements.– Benefit: “Two-for-one”
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Complete flow and air density analysis
• The analyzer continuously controls and corrects for actual volumetric flow. It compares the measured flow (transfer standard) to the calculated flow and gives an accuracy figure continuously.– Benefit: The flow through the
filter does not change. • The analyzer uses the inlet
pressure and inlet temperature to correct for the flow through the inlet.– Benefit: PM10 and PM2.5
heads do not “over sample” or “under-sample”
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Complete flow and air density analysis
• A direct flow measurement is also made using a ΔP across a flow meter. This is applied to a correction factor continuously. The flow is controlled to +1% of the set point.– Benefit: Active flow controller,
unlike “passive” critical orifices, which are dependent on atmospheric pressure.
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Complete flow and air density analysis
• The unit performs an automatic leak check. – Benefit: Insures the filter seal is
intact.
• The analyzer compares the filter pressure drop, the pump pressure and the atmospheric pressure, so that Pa>Pf>Pp.
– Benefit: Insures that the pressure sensors themselves are working properly.
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Complete flow and air density analysis
• The unit performs an automatic “Span Test” which compares a transfer flow standard with the instrument’s measured flow. – Benefit: Insures the calculated
flow rate is correct.
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Quick Review
• The basic Beta Attenuation Equation (Lenard’s Law):
m =Фi
Фf
Vμ ln ( )
Where, m is the mass
V is the volume of air
μ is the beta coefficient
Φi is the “blank” count
Φf is the “collected” count
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Complete detector performance analysis
• The instrument does the equivalent of an “auto-zero” before every measurement cycle. This is accomplished by doing a count with no filter present.
Φi (corr) = Фi - Фdark
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Complete detector performance analysis
• After each sampling cycle, the analyzer corrects for ambient radiation (such as Radon) by inserting an aluminum shield between the 14C source and the filter.
Φf (corr) = Фf - Фnat
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Complete detector performance analysis
• Detector stability is continuously measured. Should the detector count rate deviate from the theoretical decay rate, an alarm is given.
• Long-term detector stability is analyzed by comparing “air counts” (without flow) of sequential measurement cycles. If drift is excessive, an alarm is given.
• The detector HVPS is monitored for ripple and/or drift. If the HVPS deviates by more than 2%, the analyzer gives an alarm message.
• A dynamic span check is accomplished at the beginning of each cycle, using a thin sheet of aluminum to simulate a dust load.
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
“Spy” filter
• A small filter, with no flow through it (hence, no dust load), at ambient conditions, is analyzed before and after a measurement cycle.
• Benefit: Any water condensation that could affect the dust analysis is measured and subsequently subtracted off of the resulting mass concentration.
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Model 602 Operation
• The Model 602 uses a carousel of filters.• There is also a movable arm which has the detector and β source.
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Model 602 Operation
Carousel
The Carousel rotates to position the filters.
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Model 602 Operation
Sample Tubes
Sample tubes bring the unheated sample from the
outdoors.
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Model 602 Operation
Filters
47 mm Filters can be glass fiber, quartz, or
PTFE (24 hr. mode) or glass fiber (1 hour mode)
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Model 602 Operation
Source/Detector Assembly
The source/detector assembly is on a swinging arm.
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Model 602 Operation
Spy Filters
There are three spy filters on the carousel.
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Model 602 Operation
• Filters are added/removed from the carousel by means of a “loader” and “unloader” respectively.
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Model 602 Operation
• Filters are easily mounted in their cartridges.
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Model 602 Operation
• Filters are easily mounted in their cartridges.
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Model 602 Specifications
Item Hourly Mode Multi-Mode
Sampling Period 1 Hour 8-12-24-48-72 HoursFilter Cartridges 47 mm dia. 47 mm dia.Spot Size 1 to 1.8 cm² 2.54, 5.2, 7.07, 11.95 cm²Filter Media Quartz, Glass Quartz, Glass, PTFEFilter Capacity 96 CartridgesRange Up to 10 mg/m3
Flow Rate 16.7 LPM Flow Accuracy + 1%Flow Stability + 0.5% (Typical)Flow Control Servo-Controlled ValveWeight 64 kg. (141 lbs.)Power Consumption 1200 W
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Performance
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Performance
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Performance
Model 602
Model 602
Model 602
Model 602
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Performance
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Performance
M602
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
PerformanceHourly Averages (PM2.5)
-20
0
20
40
60
80
100
120
140
160
da
te &
tim
e
20
/11
/09
12
:00
21
/11
/09
01
:00
21
/11
/09
14
:00
22
/11
/09
03
:00
22
/11
/09
16
:00
23
/11
/09
05
:00
23
/11
/09
18
:00
24
/11
/09
07
:00
24
/11
/09
20
:00
25
/11
/09
09
:00
25
/11
/09
22
:00
26
/11
/09
11
:00
27
/11
/09
00
:00
27
/11
/09
13
:00
28
/11
/09
02
:00
28
/11
/09
15
:00
29
/11
/09
04
:00
29
/11
/09
17
:00
11
/30
/20
09
6:0
0
11
/30
/20
09
19
:00
12
/1/2
00
9 8
:00
12
/1/2
00
9 2
1:0
0
12
/2/2
00
9 1
0:0
0
12
/2/2
00
9 2
3:0
0
12
/3/2
00
9 1
2:0
0
12
/4/2
00
9 1
:00
12
/4/2
00
9 1
4:0
0
12
/5/2
00
9 3
:00
12
/5/2
00
9 1
6:0
0
12
/6/2
00
9 5
:00
12
/6/2
00
9 1
8:0
0
12
/7/2
00
9 7
:00
12
/7/2
00
9 2
0:0
0
12
/8/2
00
9 9
:00
12
/8/2
00
9 2
2:0
0
12
/9/2
00
9 1
1:0
0
12
/10
/20
09
0:0
0
ug
/m^
3 SN111A
SN111B
SN115A
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Performance24 Hour Averages Vs. Reference
0
10
20
30
40
50
60
70
11/2
0/20
09
11/2
1/20
09
11/2
2/20
09
11/2
3/20
09
11/2
4/20
09
11/2
5/20
09
11/2
6/20
09
11/2
7/20
09
11/2
8/20
09
11/2
9/20
09
11/3
0/20
09
12/1
/200
9
12/2
/200
9
12/3
/200
9
12/4
/200
9
12/5
/200
9
12/6
/200
9
12/7
/200
9
12/8
/200
9
12/9
/200
9
ug
/m^
3
Reference
SN111A
SN111B
SN115A
Av. SN111A&B
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Price
$55,000 …ready to sample
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Target Market• We will continue to try to get the price down and
(of course) get US EPA certification. Until then, we are targeting– Universities– Reference Laboratories– Research Laboratories– Other Critical-Measurement Users– Situations where we can manage the specifications
– Situations where there is a spec for PM10 and PM2.5
22 Years of 22 Years of Excellence!Excellence!
© 2010 Teledyne Technologies
Availability
Now*
*meaning……..