10
During an alarm condition the MHP-1 will vibrate
continuously until the alarm condition is resolved.
Note: To use the MHP-1 or MHP-2 remote alarms, the
PhD Lite must be equipped with the remote alarm
connector.
1.12 PhD Lite design components
(1) Case: The instrument is enclosed in a solid, metal-
plated ABS case. A black PVC gasket between the
upper and lower sections of the case protects against
leakage or exposure to liquids.
(2) Front face: The front face of the instrument houses
the graphics capable LCD display, MODE button, four
navigation arrows, alarm light/IrDA port, and audible
alarm port.
(3) LCD display: A graphics capable liquid crystal
display (LCD) meter allows display of readings,
messages, menu and other information. An
automatically activated backlight allows the display to
be read even in low light conditions.
(4) Alarm light / IrDA port: Two bright red LED (light-
emitting diode) alarm lights provide a visual indication
of the alarm state. The lights are visible from the front
and top of the instrument. The light also functions as
the IrDA link to the unit for uploading to and
downloading from a PC.
(5) Control buttons: The large rectangular push-button
is called the MODE button. It is used to turn the PhD
Lite on and off, to confirm menu selections and to
access the automatic calibration sequences. The four
triangular navigation arrows are used to scroll or
navigate through additional menu choices and
screens of information.
(6) Sensor compartment cover: The sensors are
protected by a vented sensor compartment cover.
Each sensor is individually protected by its own
protective filter cap.
(7) Audible alarm: A cylindrical resonating chamber
extending past the sensor compartment contains the
loud audible alarm. Three small circular apertures in
the front face of the instrument cover the resonating
chamber.
(8) Battery compartment cover: For alkaline units, the
battery compartment cover provides access to the set
of three AA alkaline batteries. The cover is held in by
a knurled retention screw.
(9) Bottom surface: The belt clip attaches to the bottom
surface of the instrument.
1.13 PhD Lite standard accessories
Standard accessories included with every PhD Lite include
sample draw / calibration adapter, hand-aspirated sample-
draw kit, 2 feet of additional tubing for use during
calibration, reference manual, quick reference card and
training CD-ROM.
The sample draw kit consists of a sample draw /
calibration adapter, squeeze bulb, sample probe,
replacement sample probe filters, and ten feet of tubing.
Standard configurations of the PhD Lite are delivered in a
foam-lined box.
1.13.1 Alkaline PhD Lite detectors
If the PhD Lite has been purchased as an alkaline
instrument, the standard accessories also include a set of
3 disposable AA alkaline batteries.
For domestic orders, the batteries will be pre-installed in
the PhD Lite at the time of delivery (unless otherwise
requested).
For some international orders, the batteries may be
removed from the instrument prior to shipment.
1.13.2 NiMH PhD Lite detectors
If the PhD Lite has been purchased as a “NiMH”
instrument, the standard accessories also include a slip
in PhD Lite fast charger.
1.14 PhD Lite kits
PhD Lite detectors may also be purchased as part of a
complete kit that includes calibration gas, calibration gas
regulator and a hard-shell carrying case.
1.14.1 PhD Lite Confined Space Kits
In addition to the standard accessories listed above,
Confined Space Kits also include calibration fittings,
fixed-flow regulator with pressure gauge, and appropriate
large cylinder(s) of calibration gas in a foam-lined,
waterproof hard-shell carrying case.
1.14.2 PhD Lite Value Packs
PhD Lite Value Packs include an alkaline PhD Lite, all
standard accessories, calibration fittings, small
cylinder(s) of calibration gas, and fixed flow rate regulator
in a foam-lined non-waterproof hard-shell carrying case.
Figure 1.14.2 Major PhD Lite Features (Top and Front
Surfaces)
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