Section 4
Page 4 - 6
MODEL 346 INSTALLATION AND OPERATION MANUAL
HA243821
Issue 5 Mar 98
4.7 MAIN MENU
If all available options are present, the following items appear in the top level or ‘Main’ menu:
Channel
Used to enter the type and ranging of the measured input or derived variable along
with Filtering, Tagging and Scale Printing information.
Instrument
Used to select chart speed units, alternative chart speed, printing mode, password,
ID number, operator alarm, access and definition of the optional user-entered Cus-
tom Curve.
Alarm
Used for selecting the type and action of all alarms. Also used to define associated
alarm messages.
Relays
Used to assign the optional relay and/or triac contact outputs to alarms, internal
triggers and totalisers.
Totalisers (optional)
Used to set scaling factors, cut-off limits, reset conditions and tag name of each
Totaliser (integrator).Log setup (optional)Used to define the circumstances that can
automatically initiate an Instrument Log.
Log setup
Used to define the circumstances that can automatically initiate an instrument log.
Custom messages (Optional)
Used to define up to ten user-defined messages of up to 16 alphanumeric characters
each.TimersFour Clock or Calendar Timers that can be used to initiate logs, print
mode changes, chart speed changes, various resets, etc. within the recorder.
Event Replay (optional)
Used to for define the operating parameters associated with:
1. The Trace History Function that stores up to 15 minutes of record history, for
replay when a specified action occurs.
2. The Range Magnify Function that increases the resolution of a record by expand
ing (on command or automatically), a defined segment of a channel record to full
scale. Ranges can also be condensed to cover a wider range of input value
changes.
Derived variable (optional) Used for the selection and combination of maths (+, -, x,
±
, ave, etc.) and predefined
function operators (mass flow, F
o
, RH, etc.) and constants for up to three calculated-
value channels.
Communications (optional) Allows communications with a host computer for reading and writing values.
Retransmission (optional)
Provides a linearised version of the relevant input signal, scaled 0 to 10 Volts.
Instrument Alarms
Used for the indication of the results of the instrument self check features. RAM
battery status, operating ROM condition and the integrity of stored configuration data
are checked.
Change Calibration
Used for instrument calibration (using high precision voltage, resistance and tem-
perature inputs) and for re-entry of the factory calibration stored at manufacture.
Note...
The items marked ‘optional’ above are described in the Options section of this document (section 5)