Section 1
Page 23
UVTOCIntroduction.fm EPA Mode
1.10.1 Connection Information
Carrier gas and fluid connections are made at the compression fittings
located on the lower left-hand side of the analyzer. EPA mode requires the
optional dual-stream kit as shown in Figure 5.
Samples between 70–100 °C
(160-212 °F) can be accommodated
using an external cooler consisting
of a 3000 mm (120 in) long,
6 mm (1/4 in) O.D. stainless steel
sample inlet tube at a flow rate
of 25-60 mL/minute.
After connections are made, make certain that they are leak free.
If the analyzer is not equipped with a fast-loop sweep, the sample and/or
dilution entry port are connected to an ambient pressure source.
If the analyzer is equipped with a fast-loop sweep, the sample and dilution
(if fitted) entry port can be connected to a pressurized source of up to 6 bar
(87 psi), with a control valve (needle valve) placed on the inlet to throttle down
the flow to between 20 and 200 mL/min.
The calibration connection is also
used for introducing the validation
standard and grab sample.
Install a short standpipe of 300 mm (12 in) on the outlet leading to waste.
The outlet must be at ambient pressure.
The appropriate fittings, control valve, and tubing are user-supplied.
The connection ports on the fast-loop entry manifold are 1/8 inch NPT.
Figure 5 Inlet Configuration for the Analyzer
1. Single Stream Inlet Manifold 2. Dual Stream Inlet Manifold
Note: Make carrier gas and fluid connections as shown on lower left-hand side of the fluids cabinet.
STREAM DILUTION
ACID
CARRIER
P
E
R
S
U
L
F
AT
E
ZERO
CLEAN
VA
L
ID
AT
IO
N
C
A
L
IB
R
A
T
IO
N
G
R
A
B
S
A
M
P
LE
S
T
R
E
A
M
2
D
IL
U
T
IO
N
(R
E
A
R
P
O
R
T
)
S
T
R
E
A
M
1
AC
ID
C
A
R
R
IE
R
P
E
R
S
U
LF
ATE
Z
E
R
O
C
L
E
A
N
VALIDATION
CALIBRATION
GRAB SAMPLE
21
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