Selection Of Measurement Gas; Output Range Setting; Oxygen Analyzer -Minimum Current (4 Ma) And Maximum Current (20 Ma) Settings - YOKOGAWA ZR402G User Manual

7.6

Selection of Measurement Gas

Combustion gases contain moisture created by burning hydrogen in the fuel. If this moisture is
removed, the oxygen concentration might be higher than before. You can select whether the
oxygen concentration in a wet gas is to be measured directly, or compensated for its dry-gas
value before use. Use the parameter code "F02" to set the measurement gas. For details on the
parameter code, see Table 10.7 or Table 10.8, later in this manual.
Table 7.4
Switch operation
> ∧
> ∧
> ∧
> ∧
> ∧
> ∧
> ∧
> ∧
> ∧
> ∧
The symbol [
7.7

Output Range Setting

This section sets forth analog output range settings. For details, consult Section 8.1,"Current
Output Settings," later in this manual.
7.7.1 Oxygen Analyzer -Minimum Current (4 mA) and
Maximum Current (20 mA) Settings
Use the parameter codes "C11" to set the oxygen concentration at 4 mA and "C12" to set the
oxygen concentration at 20 mA. The following shows where 10% O
at 20 mA.
Setting Measurement Gas
Display
A01
ENT
Display after the password has been entered.
F01
ENT
Touch the [∧] key to switch to Group F. If an unwanted alphabetic
character after F has been entered, continuously touch the [∧] key to
return to the original.
F01
ENT
Touch the [>] key to move the position of the digit that is flashing to the
right.
F02
ENT
Touch the [∧] key to change the numeric value to 2. If an unwanted
numeric value has been entered, continuously touch the [∧] key to return
to the original.
0
ENT
Touch the [ENT] key for confirmation. If 0 (zero) is entered, the oxygen
concentration in a wet gas is already set. If the oxygen concentration in a
dry gas is to be entered, follow the steps below to set 1 (one).
0
ENT
Continuously touch the [∧] key, and the position of the digit will change
from 1 to 0 to 1 to 0. Release the [ENT] key when 1 (one) is displayed.
0
ENT
Touch the [ENT] key. The numeric value will flash.
0
ENT
Touch the [ENT] key again to stop the value from flashing.
F03
ENT
Touch the [ENT] key once again, and the display will change to the
parameter code selection panel.
ENT Basic
Touch the [>] key together with the [ENT] key to return to the basic panel
panel
display. (This is not required if you proceed to make another setting.)
display
(The displayed numeric characters indicate the measurement gas
concentration.)
] indicates that the key is being touched. Light characters indicates that the digits are flashing.
<7. Startup>
Description
is set at 4 mA and 20% O
2
IM 11M12A01-04E 11th Edition : Jul. 19, 2017-00
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