19
Model TA502A
4.0 User Interfaces
This chapter discusses the user interfaces, the Setup Mode, the Setup Check Mode,
and the Inhibit Mode.
4.1 Types of User Interfaces
User interfaces are provided so that the operator may interpret and direct the Model
TA502A in the performance of its various functions. User interfaces (Figure 20)
consist of a digital display, status indicators, and a Mode/Select switch.
The digital display provides the user with the gas concentration at the sensor site,
fault diagnostic codes, and setup parameters. The status indicators provide the user
with an indication of the current mode of operation (alarm, fault, ready, calibration,
and setup). The Mode/Select switch provides the user access to the Setup Check,
Setup, and Inhibit modes.
Figure 20: Front Panel Display
4.2 Setup Check & Setup Modes
The Setup Check Mode allows the operator to view the selected options for the
module without allowing any changes to be made. Once this mode has been entered,
the module will automatically display each of the selected options for a short period of
time. The Setup Mode allows the operator to change the operating parameters by
making choices for selected options.