Vega VEGASCAN 693 Operating Instructions Manual page 20

6 Setup with the integrated display and adjustment unit
Measurement loop - Input
Meas. loop - Parameter
20
•
ASCII protocol: Direct standard connection between signal con-
ditioning instrument and PC for enquiry with terminal programs,
e.g. Hyperterminal
→
Carry out your settings via the respective keys and save with
[OK]. Further information is available in the supplementary
instructions manual "RS232/Ethernet connection" and the online
help of the respective DTM.
Because VEGASCAN 693 can read the measured values of up to 15
sensors (5 with Ex), the individual sensors must be assigned to the
measurement loops. After the addresses of the HART sensors are as-
signed, a list with the existing sensors can be prepared and displayed.
Now you can assign the requested sensor to each measurement loop.
For transmission, VEGASCAN 693 must be informed which sensor
value should be used for further processing. Depending on the sen-
sor type this can be distance, pressure, interface or temperature. If a
sensor can deliver two measured values, e.g. pressure and tempera-
ture with VEGABAR sensors, a separate measurement loop must
be assigned for each input variable. When HART sensors of other
manufacturers are connected, the options PV (Primary Value) and SV
(Secondary Value) will be available. The parameter to be transmitted
is stated in the operating instructions manual of the respective sensor
manufacturer.
The measured variable defines the applicaton of the measurement
loop, the following settings are available depending on the connected
sensor:
•
Level
•
Process pressure
•
Temperature
•
Universal (for sensors of other manufacturers)
Information:
Keep in mind that some settings must be carried out individually sev-
eral times, because they are specifically required for each measure-
ment loop.
VEGASCAN 693 • 15-channel HART signal conditioning instrument