12
NITROGEN GENERATORS
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
8. NITROGEN FLOW AT GIVEN OPERATING PRESSURE AND PURITY
Notes on flow rate and purity:
1. On the generator, the flow meter units are dimensionless. For N2-160 & N2-240, read
flowmeter at the middle of the ball. For N2-120, read flow meter at the top of the ball. The
actual flow at various operating pressures is converted into standard liters per minute (SLPM)
in the purity label on the unit.
2. Minimum purity is shown in percent nitrogen. All nitrogen purities are ±0.5%. If a more
accurate reading is required, an oxygen analyzer is recommended.
3. All data shown in the table is based on an operating temperature of 25°C (77^F).
4. All flows should be verified with an auxiliary flowmeter at the point of use.
MIN
Purity
% N
2
60 PSIG
70 PSIG
80 PSIG
90 PSIG
100 PSIG
125 PSIG
145 PSIG
Meter SLPM Meter SLPM Meter SLPM Meter SLPM Meter SLPM Meter SLPM Meter SLPM
99.50
0.7
32
0.9
43
1.1
54
1.3
66
1.5
78
1.9
110
2.1
133
99.00
1.0
43
1.2
55
1.5
71
1.7
89
2.0
106
2.5
149
2.9
183
98.00
1.4
60
1.7
79
2.1
101
2.4
124
2.7
147
3.6
212
4.1
258
97.00
1.8
76
2.2
102
2.7
130
3.1
159
3.5
187
4.5
264
5.1
325
96.00
2.1
90
2.7
125
3.3
159
3.8
194
4.2
228
5.4
320
6.3
400
95.00
2.5
107
3.1
141
3.7
180
4.3
222
5.0
268
6.3
375
7.4
467
Model N2-240
MIN
Purity
% N
2
4 BARG
5 BARG
6 BARG
7 BARG
8 BARG
9 BARG
10 BARG
Meter SLPM Meter SLPM Meter SLPM Meter SLPM Meter SLPM Meter SLPM Meter SLPM
99.50
0.7
30
1.0
46
1.3
63
1.6
80
1.8
100
2.0
117
2.1
133
99.00
0.9
40
1.3
58
1.7
83
2.1
108
2.3
133
2.7
158
2.9
183
98.00
1.3
57
1.8
83
2.4
117
2.9
150
3.3
192
3.8
225
4.1
258
97.00
1.6
71
2.3
108
3.1
150
3.7
192
4.1
233
4.8
283
5.1
325
96.00
1.9
83
2.9
133
3.8
183
4.3
233
4.9
283
5.8
342
6.3
400
95.00
2.3
100
3.2
150
4.3
208
5.2
275
5.7
333
6.7
400
7.4
467
Model N2-240
