4-4 Model 3936 Scanning Mobility Particle Sizer
TM
(SMPS
TM
) Spectrometer
Table 4-1
Recommended Operating Parameters
DMA
Model
CPC Model
Theoretical Size
Range
*
[nm]
Aerosol
Flow
[L/min]
Sheath
Flow
[L/min]
Impactor
Nozzle
[cm]
3081
Long
DMA
3772 9.0 – 469
7.1 – 318
0.6
**
1.0
6.0
10
0.0457
0.0508
3775 13 – 833
9.0 – 469
5.7 – 239
0.3
0.6
**
1.5
3.0
6.0
15
0.0457
0.0457
0.071
3776 13 – 833
9.0 – 469
5.7 – 239
0.3
0.6
**
1.5
3.0
6.0
15
0.0457
0.0457
0.071
3782 13 – 833
9.0 – 469
0.3
**
0.6
3.0
6.0
0.0457
0.0457
3785 9.0 – 469
7.1 – 318
0.6
**
1.0
6.0
10
0.0457
0.0508
3786 13 – 833
9.0 – 469
0.3
**
0.6
3.0
6.0
0.0457
0.0457
3010 9.0 – 469
7.1 – 318
0.6
**
1.0
6.0
10
0.0457
0.0508
3022A 13 – 833
9.0 – 469
5.7 – 239
0.3
0.6
**
1.5
3.0
6.0
15
0.0457
0.0457
0.071
3025A 13 – 833
9.0 – 469
5.7 – 239
0.3
0.6
**
1.5
3.0
6.0
15
0.0457
0.0457
0.071
3085
Nano
DMA
3772 3.1 – 111
2.4 – 83
0.6
**
1.0
6.0
10
0.0457
0.0508
3775 4.4 – 168
3.1 – 111
2.0 – 66
0.3
0.6
**
1.5
3.0
6.0
15
0.0457
0.0457
0.071
3776 4.4 – 168
3.1 – 111
2.0 – 66
0.3
0.6
**
1.5
3.0
6.0
15
0.0457
0.0457
0.071
3782 4.4 – 168
3.1 – 111
0.3
**
0.6
3.0
6.0
0.0457
0.0457
3785 3.1 – 111
2.4 – 83
0.6
**
1.0
6.0
10
0.0457
0.0508
3786 4.4 – 168
3.1 – 111
0.3
**
0.6
3.0
6.0
0.0457
0.0457
3010 3.1 – 111
2.4 – 83
0.6
**
1.0
6.0
10
0.0457
0.0508
3022A 4.4 – 168
3.1 – 111
2.0 – 66
0.3
0.6
**
1.5
3.0
6.0
15
0.0457
0.0457
0.071
3025A 4.4 – 168
3.1 – 111
2.0 – 66
0.3
0.6
**
1.5
3.0
6.0
15
0.0457
0.0457
0.071
*
Flows determine the particle size range possible. The ranges given are approximate.
The actual range will depend also on temperature, pressure, gas type, and scan time.
**
These flows require the use of the flow equalizer assembly (filter and valve) to provide
filtered makeup air to the CPCs.