Instruction manual

35
Alarm latch
Security beep,
Toxic sensor decimal point,
Calibration gas settings
User ID number.
Each of these options is described in greater detail
below.
To enter Instrument Setup mode:
(1) Make sure the instrument is turned off.
(2) Slide the belt clip towards the rear of the
instrument to expose the four buttons on the
instrument keypad.
(3) While holding down the "+" and “-” buttons,
press the mode button to turn the PhD Ultra
back on.
Do not release the “+” and “-” buttons until
the "Instrument Setup" message appears on
the display screen.
This will be followed by a series of screens
showing the instrument serial number, current
reminder setting, date and instrument ID
number.
This screen will be followed by a screen showing
the first instrument setup choices.
Note: Pressing the mode button at any time will
return the instrument to normal operation. The
instrument will display a screen indicating the
setup is “Unchanged”. This screen will be
followed by another announcing “Begin Shut
Down, Please Wait”. The instrument will then
turn itself off.
↓
Press “ALM” to make configuration / setup
choices.
4.3.1 Configuration setup choices
To enter the instrument configuration, follow steps
1-3 in section 4.3 above. Than press the ALM
button.
The display will briefly show screens indicating the
instrument is loading “Unit Setup” data from the
currently installed sensors.
The screen will then display the first setup choice,
which is the Tox1 Decimal point.
Press the “CAL” button to advance the display to the
next available setup option or press Mode to exit
from the instrument setup screens.
4.3.2 Changing the precision of the toxic
sensor read-out
The toxic decimal point settings will be the first
screen shown after the PhD Ultra successfully loads
the instrument configuration settings.
The toxic gas read-out may be given in full parts-
per-million (PPM) increments, or in tenths of parts-
per-million (0.1 PPM) increments. If the decimal
point is enabled, 0.1 PPM increments will be shown
during normal operation for the specified toxic. If
the decimal point is disabled readings will be shown
in full part per million increments. If the decimal
point is enabled readings will be shown in 0.1 part
per million increments.
Pressing the “+” button changes the setting.
Pressing the “CAL” button advances to the second
(Toxic 2) sensor channel.
4.3.3 Assigning an instrument
identification number
To assign the instrument an ID number, first enter
the configuration set up choices menu as described
in section 4.3.1. Then press and release the “CAL”
button to advance to the “ID Number” screen.
Use the “+” and “-” keys to assign any five digit
number between 1 and 25,000. Select "0" if no ID
number is desired. Press the “CAL” button to move
on to the next option.
Note: The instrument serial number is
programmed into the PhD Ultra’s memory and
may not be changed. The instrument ID number
may be set as needed by the user.
4.3.4"Alarm latch" command
To access the alarm latch settings, first enter the
configuration set up choices menu as described in
section 4.3.1. Then press and release the “CAL”
button to advance to the “Alarm Latch” screen.