ENMET PGD2 - Manual (Page 8)

ENMET Corporation PGD2
5
Figure 3 - Rear View of Rechargeable
Portable Gas Detector with Case Removed
Reference to Figures 1 to 3 shows that the instrument comprises the following main parts: -
•
The main instrument case moulded in high impact resistance “Bayblend” internally coated to provide electromagnetic shielding. A
belt clip and suspension hook may be optionally fitted during manufacture.
•
A removable battery pack.
•
A large red lens section containing flashing led indications, audible alarm and infra-red communications link.
•
Gas sensors and control electronics (contained in anti-impact mountings) housed within the main instrument case section.
•
A two line by 16-character liquid crystal display with backlight.
•
A four-key membrane type front panel control switch, large enough to be operated by a gloved hand.
•
A two-key membrane type top panel control switch. This membrane also carries the power and fault indicators and certification
data.
•
Gas sensor inlets which are separately sealed to help prevent water ingress to the instrument electronics.
•
A nameplate carrying the serial number of the instrument
The instrument is supplied fitted with a moulded rubber boot which provides good protection in hostile environments. The instrument
can be both charged and calibrated without removal from the boot.
It is a condition for safe use that the boot is always fitted when
used in a potentially explosive atmosphere – see section 2.1.
A body harness is also supplied as standard and comprises shoulder and waist straps which attach to the moulded rubber boot. These
straps can also be utilised to lower the instrument during pre-entry checks.
The instrument is powered from a rechargeable battery pack.
It is a condition for safe use that the battery pack may only be
recharged in a safe area – see section 2.1.
Charging Pins
Nameplate with
Serial Number
Rear Cover Retaining
Screws –
3 Positions
Rechargeable
Battery Pack
Battery Retaining
Screws –
3 Positions