Calculations; Calculating Using Actual Pressure; Figure 2-18 Typical Sample Installation Diagram - ABB NGC8206 User Manual

RM-2
RM-1
HV-1

Figure 2-18 Typical Sample Installation Diagram

2.8.1

Calculations

Lag time calculation qualifying factors:
2.8.2

Calculating Using Actual Pressure

Where:
Page 2–24
NGC8200
F1
F2 F3
G1
RM-3
ANALYZER
10 cc/min.
RM-4
HV-2
F4
LD1
LD2
HV-8
•
The sample for calculation contains mostly methane gas that flows
through 100 feet of ¼-inch stainless steel tubing with a wall thickness of
0.020-inch. Sample temperature is 80 °F (26.7 °C) and pressure is 15 psig
(29.7 psia). Bypass rotameter in the sample conditioning system reads
50% of full scale and is calibrated with air to 1180 cc/min at full scale. Air
density is 0.075 lbs/cu.ft.
•
To compute transport tubing lag time, perform the calculation below.
Calculating lag time using actual pressure:
VL
=
t
F
s
G2
HEATED CABINET
HV-3
RM-5
By-Pass
Flow
800 cm/min
Typical
HV-4
F5 HV-5
HEATER
125 WATT
HV-7
HV-6
 +
 
P 15 530
×
  
+
  
15 T 460
LIQUID DRAIN
BYPASS
STREAM 1
STREAM 2
115 VAC
60 HZ
LIQUID DRAIN
STANDARD
 

1
×  

  
Z
 
p
2101510 Rev. AG