OPERATION
6
61
H250 M40
www.krohne.com
03/2020 - 4000640706 - MA H250-M40 R06 en
0: No effect
No status signal
1: Maint. Req.
Status signal: Maintenance required
3: Failure
Status signal: Failure
4: Out Of Spec
Status signal: Out of Specification
5: Fnc. Chk.
Status signal: Function check
5.3.3 PUL. FLOW
Status mapping for detection of pulsating flow/oscillating float.
0: No effect
No status signal
1: Maint. Req.
Status signal: Maintenance required
3: Failure
Status signal: Failure
4: Out Of Spec
Status signal: Out of Specification
5: Fnc. Chk.
Status signal: Function check
5.4 BLOCKED FL.
5.4 BLOCKED FL.
5.4 BLOCKED FL.
5.4 BLOCKED FL.
Parameter setting for detection of blocked float.
5.4.1 PERIOD
1.5
…
98302 s
Monitoring period in seconds. During this period the change in flow signal (including noise)
is compared to the threshold. If the change in flow during the monitoring period is smaller
than the threshold, a blocked float status is set.
5.4.2 MIN. FLOW
0
…
100 %
Minimum flow in % of full scale for active float blocking detection. Below this value, the
detection is not active to avoid false trap because at low flow and no flow the change in flow
could be smaller than the noise/threshold.
5.4.3 THRESHOLD
0.025
…
100 %
Tolerance threshold in % of full scale. If the change in flow during the monitoring period is
smaller than the threshold, a blocked float status is set.
5.5 EXT. MAG. F.
5.5 EXT. MAG. F.
5.5 EXT. MAG. F.
5.5 EXT. MAG. F.
Parameter setting for detection of external magnetic interference.
5.5.1 HOLD TIME
0.1
…
25.5 s
Persistent and hold time of the status signal in seconds.
5.5.2 MIN MAG
0.0
…
100.0 %
Minimum value of magnetic field difference during normal operation.
5.5.3 MAX MAG
0.0
…
100.0 %
Maximum value of magnetic field difference during normal operation.
5.6 INT. MAG. F
5.6 INT. MAG. F
5.6 INT. MAG. F
5.6 INT. MAG. F
Parameter setting for detection of internal magnetic interference.
5.6.1 HOLD TIME
0.1
…
25.5 s
Persistent and hold time of the status signal in seconds.
5.6.2 MIN MAG
0.0
…
100.0 %
Minimum value of total magnetic field during normal operation.
5.6.3 MAX MAG
0.0
…
100.0 %
Maximum value of total magnetic field during normal operation.
5.7 PUL. FLOW
5.7 PUL. FLOW
5.7 PUL. FLOW
5.7 PUL. FLOW
Parameter setting for detection of pulsation flow/oscillating float.
5.7.1 HOLD TIME
0.1
…
25.5 s
Persistent and hold time of the status signal in seconds.
5.7.2 PERIOD
0.1
…
25.5 s
Sampling period of raw signal for ring buffer in seconds.
5.7.3 THRESHOLD
0.0
…
100.0 %
Threshold for minimum amplitude of pulsation/oscillation.
Table 6-15: Menu description - 5 NE107 DIAG.
Selection / Input
Explanation