7.4 Editing limits
To avoid incorrect device functioning because of excessively large or excessively small
values, for some parameters there is a minimum and maximum permissible input value
(editing limits). The set measuring range must be within these editing limits. An attempt
to exceed or undershoot these editing limits generates an error message (refer to Chapter
7.1 Diagnosis of errors and warnings).
The following parameters are checked to make sure they are within the editing limits:
•
Set 4 mA Value (V0H1)
•
Set 20 mA Value (V0H2)
•
Set 4 mA Value Automatically (V0H3)
•
Set 20 mA Value Automatically (V0H4)
•
Set Bias Pressure (V0H5)
•
Bias Pressure Automatically (V0H6)
The table below lists the editing limits and the smallest span which you can set:
Editing limits are calculated as follows
•
Lower editing limit =
"Low Sensor Limit " (V7H6) – 10% of High Sensor Limit" (V7H7)
•
Upper editing limit =
•
"High Sensor Limit" (V7H7) + 10% of "High Sensor Limit" (V7H7)
Measuring cell
Low Sensor
Limit
(V7H6)
High Sensor
Limit
(V7H7)
Lower
editing limit
Upper
editing limit
Smallest span
Metal sensor PMP 71 K
1 bar gauge pressure
–1 bar
1 bar
–1.1 bar
1.1 bar
0.02 bar
2.5 bar gauge pressure
–1 bar
2.5 bar
–1.25 bar
2.75 bar
0.035 bar
10 bar gauge pressure
–1 bar
10 bar
–2 bar
11 bar
0.11 bar
40 bar gauge pressure
–1 bar
40 bar
–5 bar
44 bar
0.41 bar
100 bar gauge pressure
–1 bar
100 bar
–11 bar
110 bar
1.01 bar
400 bar gauge pressure
–1 bar
400 bar
–41 bar
440 bar
4.01 bar
1 bar absolute pressure
0 bar
1 bar
–0.1 bar
1.1 bar
0.01 bar
2.5 bar absolute pressure
0 bar
2.5 bar
–0.25 bar
2.75 bar
0.025 bar
10 bar absolute pressure
0 bar
10 bar
–1 bar
11 bar
0.1 bar
40 bar absolute pressure
0 bar
40 bar
–4 bar
44 bar
0.4 bar
100 bar absolute pressure 0 bar
100 bar
–10 bar
110 bar
1 bar
400 bar absolute pressure 0 bar
400 bar
–40 bar
440 bar
4 bar
Cerabar S
7 Diagnosis and Trouble-Shooting
Hauser
41
