Endress+Hauser promag 30 - Page 39

For each nominal diameter there is a choice of eight pulse values (in decade steps).
A definite frequency value (f
max
= 400 Hz at v = 33 ft/s, pulse width = 1 ms) is only
available for a single switch position.
Example:
A maximum permissible pulse frequency f
max
= 20 Hz (input frequency of an
electronic counter) should not be exceeded. The nominal diameter is assumed to be
80 mm; the rate of flow Q = 600 USgal/min.
Pulse value =
Q
=
600 gal/min
=
10 gal/s
= 0.5 gal
f
max
20 s
-1
20 s
-1
At DN 80 select the switch position for the next higher pulse value ⇒ 1 gal per pulse.
Conversely when the flow rate Q is known and a pulse value has been selected, the
exact pulse frequency can be calculated.
(f
max
= 400 Hz
at v = 33 ft/sec)
Table
B
Pulse value
⇒
US units [gal/pulse]
Switch No. 5, 6 and 7
DN
[mm]
2
4
8
15
25
32
40
50
65
80
100
125
150
200
250
300
350
400
450
500
600
700
800
900
1000
1200
1400
1600
1800
2000
0.0001 gal
0.0001 gal
0.001 gal
0.01 gal
0.01 gal
0.01 gal
0.01 gal
0.1 gal
0.1 gal
0.1 gal
0.1 gal
0.1 gal
1gal
1gal
1gal
1gal
1gal
1gal
10 gal
10 gal
10 gal
10 gal
10 gal
10 gal
10 gal
10 gal
100 gal
100 gal
100 gal
100 gal
0.001 gal
0.001 gal
0.01 gal
0.1 gal
0.1 gal
0.1 gal
0.1 gal
1gal
1gal
1gal
1gal
1gal
10 gal
10 gal
10 gal
10 gal
10 gal
10 gal
100 gal
100 gal
100 gal
100 gal
100 gal
100 gal
100 gal
100 gal
1000 gal
1000 gal
1000 gal
1000 gal
0.01 gal
0.01 gal
0.1 gal
1gal
1gal
1gal
1gal
10 gal
10 gal
10 gal
10 gal
10 gal
100 gal
100 gal
100 gal
100 gal
100 gal
100 gal
1000 gal
1000 gal
1000 gal
1000 gal
1000 gal
1000 gal
1000 gal
1000 gal
10000 gal
10000 gal
10000 gal
10000 gal
0.1 gal
0.1 gal
1gal
10 gal
10 gal
10 gal
10 gal
100 gal
100 gal
100 gal
100 gal
100 gal
1000 gal
1000 gal
1000 gal
1000 gal
1000 gal
1000 gal
10000 gal
10000 gal
10000 gal
10000 gal
10000 gal
10000 gal
10000 gal
10000 gal
100000 gal
100000 gal
100000 gal
100000 gal
1gal
1gal
10 gal
100 gal
100 gal
100 gal
100 gal
1000 gal
1000 gal
1000 gal
1000 gal
1000 gal
10000 gal
10000 gal
10000 gal
10000 gal
10000 gal
10000 gal
100000 gal
100000 gal
100000 gal
100000 gal
100000 gal
100000 gal
100000 gal
100000 gal
1000000 gal
1000000 gal
1000000 gal
1000000 gal
10 gal
10 gal
100 gal
1000 gal
1000 gal
1000 gal
1000 gal
10000 gal
10000 gal
10000 gal
10000 gal
10000 gal
100000 gal
100000 gal
100000 gal
100000 gal
100000 gal
100000 gal
1000000 gal
1000000 gal
1000000 gal
1000000 gal
1000000 gal
1000000 gal
1000000 gal
1000000 gal
10000000 gal
10000000 gal
10000000 gal
10000000 gal
100 gal
100 gal
1000 gal
10000 gal
10000 gal
10000 gal
10000 gal
100000 gal
100000 gal
100000 gal
100000 gal
100000 gal
1000000 gal
1000000 gal
1000000 gal
1000000 gal
1000000 gal
1000000 gal
10000000 gal
10000000 gal
10000000 gal
10000000 gal
10000000 gal
10000000 gal
10000000 gal
10000000 gal
100000000 gal
100000000 gal
100000000 gal
100000000 gal
0.00002087 gal
0.00008348 gal
0.0003339 gal
0.001174 gal
0.003261 gal
0.005343 gal
0.008348 gal
0.01304 gal
0.02204 gal
0.03339 gal
0.05217 gal
0.08152 gal
0.1174 gal
0.2087 gal
0.3261 gal
0.4696 gal
0.6391 gal
0.8348 gal
1.057 gal
1.304 gal
1.878 gal
2.556 gal
3.339 gal
4.226 gal
5.217 gal
7.513 gal
10.23 gal
13.36 gal
16.90 gal
20.87 gal
Caution!
Work with this table only when you have turned switch No. 3 to “ON” (US units).
For switching position "ON-ON-ON", set values may differ fron those shown in the table. In such cases, the valid value may be read
from the service plate in the electronics compartment cover. Also, the pulse duty cycle of 1:1 can deviate.
Promag 30 5. Operation and Commissioning
Endress+Hauser 39