Measuring ranges
VA 525 EN V1.01
Page 10 of 41
7
Flow measuring ranges
7.1 Flow for different gases
1/4"
1/2"
3/4"
1"
1 ¼"
1 ½"
2"
Analog
output
20mA
Analog
output
20mA
Analog
output
20mA
Analog
output
20mA
Analog
output
20mA
Analog
output
20mA
Analog
output
20mA
l/min
[m³/h]
[m³/h]
[m³/h]
[m³/h]
[m³/h]
[m³/h]
Reference DIN1945/ ISO 1217: 20°C, 1000 mbar
(Reference during calibration)
Air
Low Speed
25
20
45
75
140
195
320
Standard
50
45
85
145
265
365
600
Max
105
90
175
290
530
730
1195
High Speed
130
110
215
355
640
885
1450
Adjustment to DIN 1343: 0°C, 1013,25 mbar
Air
Low Speed
25
20
40
70
130
180
295
Standard
50
40
80
135
240
335
550
Max
100
80
160
270
485
670
1100
High Speed
120
100
195
325
590
815
1330
Argon
(Ar)
Low Speed
45
35
75
120
220
305
505
Standard
85
70
135
230
415
570
935
Max
170
140
275
460
830
1140
1870
High Speed
205
170
335
555
1005
1385
2265
Carbon dioxide
(
CO
2
)
Low Speed
25
20
45
75
140
195
320
Standard
50
45
85
145
260
360
590
Max
105
90
175
290
525
720
1185
High Speed
130
105
210
350
635
875
1430
Nitrogen
(N
2
)
Low Speed
25
20
40
70
130
180
295
Standard
50
40
80
135
240
335
550
Max
100
80
160
270
485
670
1100
High Speed
120
100
195
325
590
815
1330
Oxygen f
(O
2
)
Low Speed
25
20
45
75
135
185
305
Standard
50
40
80
140
250
345
570
Max
100
85
165
280
505
695
1140
High Speed
125
105
205
340
610
845
1380
Nitrous oxide
(N
2
O)
Low Speed
25
20
45
75
140
190
315
Standard
50
40
85
140
260
355
585
Max
105
85
170
285
520
715
1170
High Speed
125
105
210
345
630
865
1420
Other gases on request
Please note:
The area outside the pipeline (ambient area of the sensor) must not be an explosive area.