Chapter 1. Programming Site Data
12
DigitalFlow™ XGS868i Programming Manual
1.7.4 Temperature Input
The Model XGS868 can use either a fixed temperature value or a live temperature input to calculate the steam density
for the mass flow rate display.
3.
Scroll to a
Fixed
temperature value or to set up the option card in
Slot 1
that will supply the live temperature input
and press
[Enter].
Note:
If Slot 1 contains an activated option card with an analog input assigned to
Temperature
or an
RTD
input, Slot 1
appears as an option at the above prompt. If the process temperature is stable, a fixed value may be used, but
most applications require a live temperature input. If there is no active option card for temperature, the meter
assumes you are using a fixed temperature.
•
If you selected
Fixed
, proceed to Step 4.
•
If you selected
Slot 1
, proceed to Step 5.
4.
Enter the known
Fixed Temp.
(process temperature) and press
[Enter].
The meter will accept values from -328 to
1,832°F (-200 to 1,000
o
C). Proceed to
Base Temperature
in step 6.
5.
Scroll to
Input A
or
Input B
and press
[Enter].
The inputs were labeled during setup.
Note:
The set up of Input A is used as an example. Identical procedures would be used to set up Input B.
1.7.5 Base Temperature
6.
Use the arrow keys to enter the
Base Temperature
and press
[Enter].
The ratio of this value to the actual
temperature is used to calculate the standard mass flow rate.
•
If you selected
No
at Assume Saturation, proceed to Step 7 below.
•
If you selected
Pressure
as the Steam Input Type, proceed to Step 7
below.
•
If you selected
Temperature
as the Steam Input Type, proceed to step 10 on the next page.
1.7.6 Pressure Input
7.
Scroll to a
Fixed
pressure value or to set up the option card in
Slot 1
that will supply the live pressure input and
press
[Enter].
Note:
If Slot 1 contains an activated option card with an input assigned to
Pressure, Slot 1
appears as an option at the
above prompt. If the process pressure is stable, a fixed value may be used, but most applications require a live
pressure input. If there is no active option card for pressure, the meter assumes you are using a fixed pressure.
•
If you selected
Fixed,
proceed to Step 8.
•
If you selected
Slot 1
, proceed to Step 9.
8.
Enter the known
Fixed
process
Pressure
and press
[Enter].
The meter will only accept values from 0 to 5,000 psia.
Proceed to
Base Pressure
in Step 10.
9.
Scroll to
Input A
or
Input B
and press
[Enter].
The inputs were labeled during setup.
Note:
The set up of Input A is used as an example. Identical procedures would be used to set up Input B.
Summary of Contents for DigitalFlow XGS868i
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