Carbon Monoxide Alarm User Manual

Page 5
Introduction
The PhD
2
is a personal, portable, microprocessor controlled gas detector that can monitor up to four atmospheric
hazards simultaneously. The PhD
2
measures oxygen, combustible gas, and up to two additional toxic gases. The
PhD
2
uses a top-mounted, back-lit, "Supertwist" LCD (liquid crystal display) to simultaneously show readings of
the gases being measured. A loud audible alarm and individual alarm lights for each gas being monitored warn
users of hazards.
The PhD
2
offers a choice of three modes of operation, providing the right amount of information for users with
different skill levels. The PhD
2
automatically remembers (logs) gas readings, as well as other important
information such as turn-on / turn-off times, battery condition, and whenever the instrument is calibrated. This
information may be downloaded to a computer to create a permanent record, or directly displayed on the PhD
2
meter screen.
The PhD
2
is Classified by Underwriters Laboratories, Inc. and the Canadian Standards Association as to Intrinsic
Safety for use in Hazardous Locations Class I, Groups A, B, C, and D.
Classification for intrinsic safety is based on tests conducted in explosive gas / air (21 % oxygen) mixtures only.
The PhD
2
should not be used for combustible gas monitoring in atmospheres where oxygen concentrations exceed
23.5 % oxygen.
ONLY THE COMBUSTIBLE GAS DETECTION PORTION OF THIS INSTRUMENT HAS BEEN ASSESSED BY THE
CANADIAN STANDARDS ASSOCIATION FOR PERFORMANCE.
UNIQUEMENT, LA PORTION POUR DÉTECTER LES GAZ COMBUSTIBLES DE CET INSTRUMENT A ÉTÉ ÉVALUÉE.
WARNING: SUBSTITUTION OF COMPONENTS MAY IMPAIR INTRINSIC SAFETY.
AVERTISSEMENT: LA SUBSTITUTION DE COMPOSANTS PEUT COMPROMETTRE LA SÉCURITÉ INTRINSÈQUE.
CAUTION: FOR SAFETY REASONS THIS EQUIPMENT MUST BE OPERATED AND SERVICED BY QUALIFIED
PERSONNEL ONLY. READ AND UNDERSTAND THE INSTRUCTION MANUAL COMPLETELY BEFORE OPERATING
OR SERVICING.
ATTENTION: POUR DES RAISONS DE SÉCURITÉ, CET ÉQUIPMENT DOIT ETRE UTILISÉ, ENTRETENU ET RÉPARÉ
UNIQUEMENT PAR UN PERSONNEL QUALIFIÉ. ÉTUDIER LE MANUEL D'INSTRUCTIONS EN ENTIER AVANT
D'UTILISER, 'ENTRETENIR OU DE RÉPARER L'ÉQUIPMENT.
CAUTION: ANY RAPID UP-SCALE READING FOLLOWED BY A DECLINING OR ERRATIC READING MAY INDICATE
A GAS CONCENTRATION BEYOND UPPER SCALE LIMIT WHICH MAY BE HAZARDOUS.
AVERTISSEMENT: TOUTE LECTURE RAPIDE ET POSITIVE, SUIVIE D'UNE BAISSE SUBITE AU ERRATIQUE DE LA
VALEUR, PEUT INDIQUER UNE CONCENTRATION DE GAZ HORS GAMME DE DÉTECTION QUI PEUT ÊTRE
DANGEREUSE.
Signal Words
The following signal words, as defined by ANSI Z535.4-1998, are used in the PhD2
Reference Manual.
indicates an imminently hazardous situation which, if not avoided,
will result in death or serious injury.
indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury.
indicates a potentially hazardous situation, which if not avoided, may
result in moderate or minor injury.
CAUTION
used without the safety alert symbol indicates a potentially hazardous situation
which, if not avoided, may result in property damage.