YOKOGAWA EXAxt ZR402G, User Manual

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<7. Startup>
7-16
IM 11M12A01-04E
7.10.3 Checking Input Contacts
Follow Table 7.13 to check the input contacts. The table uses an example with input contact 1.
Table 7.13 Checking Input Contacts
Switch operation Display Description
> ∧
ENT
A 01
Display after the password has been entered.
> ∧
ENT
G 01
Touch the [ ∧ ] key to switch to Group G.
> ∧
ENT
G 0 1
Touch the [>] key to move the position of the digit that is flashing to the
right one digit.
> ∧
ENT
G 2 1
Touch the [ ∧ ] key to enter 2.
> ∧
ENT
0
Touch the [ENT] key. 0 is displayed with the contact open. If the contact is
closed, the display will be 1 (one).
This enables you to check whether or not the wiring connections have
been properly made or not.
> ∧
ENT
G 21
Touch the [ENT] key once again to switch to the parameter code selection
display.
> ∧
ENT Basic
panel
display
Touch the [>] key together with the [ENT] key to return to the basic panel
display.
The symbol [ ] indicates that the key is being touched. Light characters indicates that the digits are flashing.
7.11 Calibration
The converter is calibrated in such a way that the actual zero and span gases are measured
and those measured values are used to agree with the oxygen concentrations in the respective
gases.
There are three types of calibration procedures available:
(1) Manual calibration conducting zero and span calibrations, or either of these calibrations in
turn.
(2) Semi-automatic calibration which uses the infrared switches or a contact input signal and
conducts calibration operations based on a preset calibration time and stable time.
(3) Automatic calibration conducted at preset intervals.
Manual calibration needs the ZA8F Flow Setting Unit to allow manual supply of the calibration
gases. Semi-automatic and automatic calibrations need ZR20H Automatic Calibration Unit to
allow automatic supply of the calibration gases. The following sections set forth the manual
calibration procedures. For details on semi-automatic and automatic calibrations, consult
Chapter 9, “Calibration,” later in this manual
7.11.1 Calibration Setup
Set the following three items before carrying out a calibration. Parameter codes for these set
items are listed in Table 7.14.
(1) Mode setting
There are three calibration modes: manual, semi-automatic, and automatic.
Select the desired mode. This section uses manual mode for calibration.
(2) Oxygen concentration in zero gas
Enter the zero gas oxygen concentration for calibration.
11th Edition : Jul. 19, 2017-00