Endress+Hauser Cerabar S PMC 731, Operating Instructions Manual

Page: 46 / 68

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 edting 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 edting 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
Ceramic sensor PMC 631 and PMC 731
0.1 bar gauge pressure –0.1 bar 0.1 bar –0.11 bar 0.11 bar 0.001 bar
0.4 bar gauge pressure –0.4 bar 0.4 bar –0.44 bar 0.44 bar 0.004 bar
2 bar gauge pressure –1 bar 2 bar –1.2 bar 2.2 bar 0.02 bar
10 bar gauge pressure –1 bar 10 bar –2 bar 11 bar 0.1 bar
40 bar gauge pressure –1 bar 40 bar –5 bar 44 bar 0.4 bar
0.4 bar absolute pressure 0 bar 0.4 bar –0.04 bar 0.44 bar 0.004 bar
2 bar absolute pressure 0 bar 2 bar –0.2 bar 2.2 bar 0.02 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
Metal sensor PMP 635 and PMP 731
1 bar gauge pressure –1 bar 1 bar –1.1 bar 1.1 bar 0.01 bar
2.5 bar gauge pressure –1 bar 2.5 bar –1.25 bar 2.75 bar 0.025 bar
10 bar gauge pressure –1 bar 10 bar –2 bar 11 bar 0.1 bar
40 bar gauge pressure –1 bar 40 bar –5 bar 44 bar 0.4 bar
100 bar gauge pressure –1 bar 100 bar –11 bar 110 bar 1 bar
400 bar gauge pressure –1 bar 400 bar –41 bar 440 bar 4 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
7 Diagnosis and Trouble-Shooting Cerabar S
46 Hauser