Note
HW key protected parameters
For type-approved and verified FUE380 flowmeter the settings are HW key protected and can
be only read, but not changed via PDM. The HW key is located behind the display and is
thereby protected by the display sealing. The verification sealing may only be broken with the
acceptance of the authorities.
6.5.6 Output A, terminals 56/57:
The pulse rate can be seen on transmitter side label (system nameplate).
The settings are dependig on the ordering. The following table shows the typical recommended
pulse output settings (pulse width 5 ms) for the energy calculator SITRANS FUE950
For optimal benefit, the pulse value and pulse length must be selected as low as possible. The
following calculation formula can be used for determining the lowest pulse value at a pulse
length of 5 ms:
L/pulse > Qs (m
3
/h)/360
For example Qs = 300 m
3
/h; L/pulse > 300/360; L/pulse > 0.83; therefore the pulse value must
be 1 l/pulse (nearest possible ordering selection).
See also the pulse guide in PDM [Device → Pulse guide (offline)].
Table 6-5 Recommended pulse values for FUE950
DN Pulse setting (liter/pulse) with 5 ms pulse length
50 1
65 1
80 2.5
100 2.5
125 2.5
150 10
200 10
250 10
300 50
350 50
400 50
500 100
600 100
700 100
800 100
900 100
1000 100
1200 100
Commissioning
6.5 Commissioning via PDM
SITRANS FUS380/FUE380
60 Operating Instructions, 05/2018, A5E00730100-AE
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