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5. Installation
5. Installation
GTD-3000ExW
Instruction Manual
5.1. Detachment of Housing Cover
It is prohibited for an individual, other than an approved user or a technician responsible for installation and repair from
the head office, to install a gas leak detector on site or open the cover of the installed gas leak detector and manipulate
it. This may cause serious loss of life and property from fire, explosion, and etc. In addition, please check whether there
is any remaining explosive gas or combustible material in the surroundings. Power must be turned off before performing
work.
[Figure 4. Display Part Detaching Method]
■ After detaching the cover, disassemble the display parts
as below.
① Push in left and right fixing rings located on front
side of LCD at the same time.
② While pushing, pull the display parts towards the
front to detach from gas detector body.
③ After detaching the display parts, the Main PCB is
installed at the bottom part of the detector body.
5.2. Main PCB Configuration
■ After detaching the display parts, the Main PCB terminal layout appears as shown in the figure below.
[Table 2. Main PCB Key Part Description]
No
NAME
DESCRIPTION
1
CN11
Power & Output Signal Terminal
2
CN10
Alarm & Fault Relay Terminal
3
CN9
RS485 Terminal
4
J1
4~20mA Source / Sink Selection Jumper ( ON: Source Type, OFF: Sink Type)
5
CN4
Display LCD or OLED Connector
6
CN1
Sensor Connector
7
CN5
Program download Connector
8
D1
Status LED (Flashes in 1 sec interval during normal operation)
9
OC1, OC2, OC3
HART Option Board Connector
10
CN3
Warning light (GTL-100) Interface Connector
[Figure 5. Main PCB Terminal Layout]
■ Using OC1, OC2, and OC3 shown in the layout above, HART Option RS-485 MODBUS board can be attached.
3ØScrew holes located at top left of option board are used for fixing.
[Figure 3. Slotted Set Screw]
■ <Warning - Do not open when electical current is
flowing>
■ Turn the slotted set screw (M4 x 1ea) fixing the
cover part of main body 3~4 turns counter
clockwise (ccw) using a hex wrench (M2) then
turn the cover of gas leak detector ccw to
detach the cover. When the cover is detached,
LCD appears.
