Hach Ultra ORBISPHERE 3624, Operator'S Quick Manual

Page 5

Your instrument is pre-set with certain default
v a l u e s   t o   a n t i c i p a t e   y o u r   m e a s u r e m e n t
conditions, such as measurement display units,
thermal cutoff temperature, etc. You may,
however, change these using the Instrument
Modify Options Menus.
Several of these menus duplicate functions that
are more efficiently performed from the PC. For
those menus that are 

exclusive

 to the instrument,

the phrase 

Instrument Only

 has been added to

the section headings.
It is advisable to give the PC control priority over
the instrument. To do this, make sure you confirm
the Change Product mode on the instrument.

DISPLAY UNITS

This option allows you to specify your type of
measurement (CO

2

 or Brix), the units of

measurement to be displayed, the display
resolution (i.e. decimal point placement), the
number of display ranges desired and the
temperature units to be displayed. Additional
choices of gas solubility are provided for CO

2

measurements.

THERMAL CUTOFF (instrument only)

If the sample temperature is liable to exceed the
compensated temperature range of the sensor,
you can set an upper temperature limit to
automatically cut off the electrical signal to the
sensor to extend the sensor's life. Once enabled,
if the sample temperature exceeds this limit, then
alarms are set and a message appears on the PC
and the instrument LCD.

ALARM

Upper and lower alarm limits are software
adjustable throughout the measurement range. If
the measured concentration is outside the
specified limits, the instrument sets an alarm.

SERIAL OUTPUT (instrument only)

The instrument serial output is normally used to
interface to the PC for analysis of measurement
data via the ProBrix Plus PC Program.

CONTINUOUS PURGE (instrument only) 

Use this option to view the sensor voltages,
particularly when seeing the 

Prg

 message on

your instrument LCD.

ROLLING AVERAGE (instrument only)

The rolling average feature causes the instrument
to average measurements over successive
measurement cycles. It suppresses sharp peaks
and troughs, while retaining reasonably fast
response to real concentration changes. This
option also acts as a noise filter for Brix/Diet
measurement.

LANGUAGE (instrument only)

The instrument can display its menus in English,
French, Japanese, Spanish, German, or Italian
although the units of measurement remain the
same.
Note that this only changes the language for the
menus on the instrument. The language used on
the PC is always English.

HOLD RECOVERY (instrument only)

This option allows you to choose a longer or
shorter recovery time after a Hold condition has
ended.

OFFSET

You may wish to apply a specific offset value to
the displayed gas measurement. Be aware that
this offset value will be lost once a different
product is selected.

CORRECTIONS (instrument only)

This option is reserved for qualified Orbisphere
Service Representatives only. As such, if you feel
that corrections are required, please contact your
local Orbisphere Service Representative to
perform this operation for you.

CHANGE PRODUCT

Products can be changed either at the PC or
directly on the instrument depending on how the
change product parameter has been set.

Setting Instrument Options