RHEONIK Messgeräte GmbH
REV. I, Apr. 2004
.
Operation Manual RHE 07, 08, 11
Page
24
2.1.4. Advanced setup and diagnostics
This menu will only be displayed after key #2 and #3 have been pressed simultaneously. The menu
has two options:
- Diagnostics (sensor RHM, I/O hardware)
- Basic level parameter setup (RHM sensor parameters, filtering, calibration settings,
corrections). It contains items that alter calibration parameters and items that reconfigure the elec-
tronics to perform different functions.
2.1.4.1. Setup and diagnostics
This menu has two options:
1)
Set
(I/O to a certain status or level)
2)
Show
(current I/O status / level)
For example in
Set
mode you can set the mA output to a certain value in order to then check the
output using a connected measuring device or a supervisory control and data acquisition.
In
Show
mode you can see the actual mA value the output should have at a certain flow rate, tem-
perature or density indication.
2.1.4.1.1. Sensor diagnostics
This function is helpful for start-up checking or for testing sensor malfunctions.
The single diagnostic displays are:
•
Freq:
Sensor oscillation frequency in
XXX.XXX Hz
. With proper installation, constant fluid density and
no electrical or mechanical interference, this value should vary only at the second decimal after
the dot.
•
Gate1:
Phase shift timer #1 in counts. *
•
Gate2:
Phase shift timer #2 in counts. *
* The actual phase shift corresponding to massflow rate is calculated from the
difference between the
Gate 1
and
Gate 2
value.
•
TmDiff:
Difference:
Gate1
–
Gate2