LTH Electronics HPT63, Operation Manual

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4 User Interface
13
4 User Interface
WARNING!
Before proceeding, ensure that the installation instructions have
been followed correctly. Failure to do so may result in an electrically
hazardous installation, or degrade instrument performance.
When shipped, the HPT63 is configured to the default pH set-up ( see Appendix A –
Factory Default Setups ). In this state the instrument can perform all of the necessary
function for a basic pH monitoring instrument.
4.1 The Front Panel
The HPT63 uses a versatile LCD to display all of the settings and readings. The
seven segment digits at the top of the display indicate the primary measured value
during normal operation. The six character display to the right of these indicates the
units of measurement when a value is being displayed. The sixteen characters on
the bottom of the display to indicate secondary readings or states, and display
scrolling error messages.
Along with the LCD display, the front panel also incorporates five LEDs. The two
outer LEDs (labelled 1 and 2) indicate the set point status, i.e. when the LED is
illuminated the indicated relay is active. The centre LED indicates when the unit is
Off-line.
Note: Not all relay channels may be fitted.