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4. Name and Description of Each Part
NO
NAME
DESCRIPTIONS
6
RS-485 signal terminal
CN9 is Isolation RS-485 network signal connection terminal (A, B).
7
Sensor terminal
CN1 is Sensor Connection Terminal. (RD , WH , BK , BE)
8
Power lamp
When power is on, lamp lights on.
9
Trouble lamp
It lights on when there is a fault in the circuit or sensor sensitivity, etc.
10
Alarm1 lamp
It lights on when gas leaks and it exceeds Alarm1 level.
11
Alarm2 lamp
It lights on when gas leaks and it exceeds Alarm2 level.
12
Function key
During parameter setting, it changes to program mode when it is contacted with magnet-bar for
2 sec or longer. (Program mode, Calibration mode, Test mode, etc.) Also, it is used to enter and
set an arbitrary data.
13
Reset key
To cancel or return to the previous status during Parameter setting, use the Magnet Bar and
touch once. (Each touch returns to the previous status by one unit.
14
↑(Up) key
During conversion of mode or number, use the Magnet-Bar and touch once. Each touch converts
or changes one level. (Converts to the next level)
15
↓(Down) key
During conversion of mode or number, use the Magnet-Bar and touch once. Each touch converts
or increases displayed value by one unit. (Converts to the previous level)
16
External earth
- It is an external ground for protection from external noise or strong electric field.
- Use a conductor that is 4 mm or longer when coupling ground line.
17
Mount hole
Hole to fix the gas detector on external wall or other installation sites.
18
Cover fixed screw(M4)
After assembling detector housing body and cover, they are fixed with hex lens bolt to prevent
detachment by external shock.
19
Sensor thread
It is a mounting for gas sensor (detector).
20
Cable inlet
It is provided to supply power and inlet for measured output signal of the gas detector during
installation work. As default, PF 3/4" is provided.
21
Internal earth
- It must be grounded to inside of detector for protection from external noise or strong electric
field.
- Use a conductor that is 4 mm or longer when coupling ground line.
22
RS-485 Module /
HART Module (Option 사양)
It is a connector for Isolation Type RS-485 and HART network modules to communicate with PC
or PLC. To run RS-485 network, network address must be configured. Default is 1. To run HART
network, Polling-Address and Tag No., etc. must be configured.
23
Relay Contact
Type Selection
Jumper
It is constructed to select A or B contact.
When it is not in ENERGIZER MODE, it operates in A contact (Normal Open) mode or B contact
(Normal Close) mode when Jumper is connected to a part marked as A silk or B silk, respectively.
In contrast, when it is in ENERGIZER MODE, connecting Jumper to A operates in B contact mode
and connecting Jumper to B operates in A contact mode.
24
Warning Light Connector
It is a connector connected when a warning light is used. (Option)
25
Program Connector
It is a connector for downloading the program for the product.
26
FRONT CASE
It is an explosion-proof case made of explosion-proof plastic and emits LED light externally
through transparent window.
27
CASE RING
It serves as a cover to prevent deviation of front case.
28
SEXANGLE BOLT
It serves to prevent deviation after case ring assembly and is fixed by mood bolt.
29
CASE BODY
It is the main body that protects internal buzzer and other parts by body.
NO
NAME
DESCRIPTIONS
30
BUZZER
It receives signal upon an event of error and generates warning sound.
31
FIXED RING
It prevents sintering filter from escaping upon external shock.
32
FLAME ARRESTER
It blocks flow in of dust, debris, water, gas and delivers warning sound from the buzzer to
outside.
33
ARREST CAP
It protects sinter filter from external shock.
34
LED COVER
It is a joint for LED PCB ASS'Y and covered with molding.
35
LED PCB ASS"Y
It is a multi-color LED that displays status.
36
NUT
It serves to fix parts to the compliment part.
37
SHAFT BODY
It serves to fix parts to the compliment part.
38
CABLE WIRE
It supplies power and transmits data.
[Table 1. GTD-3000ExW Transmitter Components Description]
4. Name and Description of Each Part
GTD-3000ExW
Instruction Manual
4.2. LAMP Function Description
■ In normal status, green LED lights on and buzzer does not ring.
■ When Alarm-1 signal is received, red LED flickers in 1 sec interval and buzzer rings in 1 sec interval.
■ When Alarm-2 signal is received, red LED lights on and buzzer rings continuously.
■ When Trouble signal is received, yellow LED lights on and buzzer does not ring.
