Revision 5
101
August 2021
Plant Factor
Y
Config – Calculation
Plant factor in the Air Demand equation (refer
to Section 1.1). Plant factor is calculated as per
the equation shown in Table 13, Section
4.8.2.1. In most cases, this will be -3.
Operating Ratio
Y
Config – Calculation
Optimal ratio of H
2
S to SO
2
for the sulfur
recovery unit in which the analyzer is installed.
In most cases, this will be 2.
Probe Control
N
N/A
Indicates which control point is used for the
actuation of the probe cooler solenoid. Three
options are available:
•
Control with SVP No RTD
Attached
– probe cooler is actuated
when sulfur vapour level rises above
set point value. No probe
temperature measurement RTD
present, so probe temperature
warning / fault are disabled.
•
Control with SVP (RTD is still
attached)
– probe cooler is actuated
when sulfur vapour level rises above
set point value. Probe temperature
measurement RTD is present, so
probe temperature warning / fault are
active.
•
Control with RTD
– probe cooler is
actuated when measured probe
temperature exceeds set point value.
Probe temperature warning / fault
active.
NOTE: If no probe RTD is installed, the first
option MUST be chosen or the analyzer will
be unable to function correctly.
Analog Output 1, 2, 3, 4
Setup
Y
Config – Outputs
Configures the parameter output on each of the
analyzer’s four analog outputs. Available output
parameters for each output as per Table 12,
Section 4.8.1.
Analog Output 1, 2 ,3 4
Full scale
Y
Config – Outputs
Concentration value corresponding to an output
of 20mA for each output.
NOTE:
For all parameters but air demand, 4
mA corresponds to a concentration of 0. For Air
Demand, 4 mA corresponds to negative full
scale.
Analog Output 1, 2, 3, 4
Track or Hold
Y
Config – Outputs
Configures each output for either track or hold
behaviour. Refer to section 3.3.1 for more
details.
To change a parameter:
1. Click on the parameter to be edited. The data entry field for that parameter will change
to a white background.
2. Edit the parameter by typing in a new value. Some parameters such as
Probe Control
are non-numerical and can be edited by using the pull-down selection menu.
3. Once editing of the selected field is complete, press Enter
on the keyboard.
4. Change any other parameters to be edited using the procedure in steps a to c.
5. Once all necessary changes have been made, click on the
Save to Unit
button at the
bottom of the screen to save all changes permanently to the analyzer.
If it is necessary to cancel all changes made on this page, clicking
Revert
before clicking on
Save to Unit will undo all changes made during that editing session.
Содержание 943-TGS-CE
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