Yokogawa GD40 Gas Density Detector - Manual (Page 54)

<4. Functions>
4-1
IM 11T3E1-01E
4. FUNCTIONS
When using the GD402 analyzer, set data and select functions according to the measuring
conditions. This chapter describes the structures of function.
4.1 Summary of Setting Operations
4.1.1 Measurement, Operation, Setting and Service
Parameters can be set by selecting the appropriate mode. These modes are classified into four
levels: measurement, operation, setting, and service.
[Measurement Level]
This level is used to view various measured values.
[Operation Level]
This is basically a level used to select between items to be viewed in the measurement mode
and a parameter to be measured, and to perform operations relating to routine inspection and/or
maintenance such as calibration.
[Setting Level]
At this level, there are modes for setting data related to analog outputs, calibration data and
alarm contact outputs.
[Service Level]
The GD402 analyzer has numerous functions. At this level, there are modes for selecting the
functions necessary for system operation.
4.1.2 Key Operations
Keys can be operated in an "interactive" manner. Operate the keys according to the information
in the data or message field, information pointed to by the pointer (mode indication), and/or infor-
mation in the key operation indicators. For basic key operations, see Subsection 3.1.4.
[Interactions]
l Flashing pointer
This inquires whether you want to go to the mode being pointed at or move the pointer to the
next mode. When the system indicates the modes for the setting or service level, the message
is preceded by an asterisk (*). When you enter one of the modes, the pointer stops flashing and
remains continuously lit.
l
Flashing key operation indicators
This prompts you to choose an indicator from the indicators flashing on the display and press
the corresponding key.
l
Flashing numerals in data field
This asks whether you want to change the flashing numeral or move to the next digit and have
it flash. Press the appropriate key. If neither of these actions is required, press the [ENT] key.
[Aborting the Setting Operation]
Press the [MODE] key. Normally, the [MODE] key is used to move from the measurement
() mode to a mode at the operation level. It is also used to return to the measure-
ment mode from other modes.