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3. Specification
GTD-3000ExW flammable gas detector has been developed to detect gas leaked from industrial sites and various
flammable gases generated from factories, gas storages, and manufacturing processes that produce or use flammable
gases and to prevent accidents in advance. GTD-3000ExW flammable gas detector is installed in areas with gas leak
hazards and continuously monitors gas leak. It displays measurements on built-in LCD of the detector, delivers alarm
status by visual and audible signal using a warning light, converts and transmits data in Analog 4~20 mA standard output
signal. Also, for Analog 4~20 mA standard output, output signal transmission length between detector and receiver can
be connected up to 2,500 m. (When Cable CVVS or CVVSB 1.5sq and higher is used.) GTD-3000ExW flammable gas
detector must be used at a height below 1,000 m above sea level.
Body of GTD-3000ExW is made of Aluminum alloy and the gas sensor module is made of stainless steel. It consists of a
complete explosion-proof enclosure (Ex d IIC T6). This product can be installed in areas with combustible gas leak and
explosion hazards. It has built-in display (LCD or OLED) on the detector to display gas leak status at installed site. Internal
configuration consists of display part that indicates measurements, terminal part that output measurements (Analog
4~20 mA) externally, and a PCB board. External configuration consists of sensor that detects gas leak, cable inlet, and
high-pressure explosion proof small warning light made of SUS materials. It uses magnet-bar outside the main body of
detector enabling calibration from the outside of the detector, thus, maintenance is convenient.
3.1. Basic Specifications
ITEMS
SPECIFICATION
Measuring Type
Diffusion
Measuring Value Display
- LCD or OLED Display
- Green, Red, Yellow LED
- Sound Output(95dB)
Measuring Method
- Catalytic Cell
- Thermal Conductivity Cell
- Heated-semiconductor Cell
Detectible Gas
Combustible Gas
Measuring Range
0~100% LEL
Accuracy
≤ ±3% / Full Range
Zero Drift
≤ 2% / Full Range
Response Time
90% of full Scale in less than 15 sec
Approvals Classification
KCs: Ex d llC T6,T5,T4
Basic Interface
Analog 4-20mA current interface
HART Interface
HART REV7(Option)
Option
HART Board
MODBUS RS485 Board
Warranty
Transmitter & Lamp
2Year
Sensor
1Year
3.2. Mechanical Specifications
ITEMS
SPECIFICATION
Explosion Proof type
Explosion-proof enclosure
Dimension
- Transmitter: 156(W) × 322(H) × 110(D) mm
- Lamp: 83.8(W) × 85(H) × 48(D) mm
Weight including Sensor
App. 2.5kg
Mounting type
Wall mount
Mounting Holes
Ø 7 ±0.1
Cable inlet
3/4" PF ( 1/2" or 3/4" NPT )
Body material
Transmitter)
aluminum alloy
Sensor
Stainless Steel (STS316)
Lamp Cover
PC
Lamp Body
Stainless Steel (SUS304)
2. Configuration
1. Overview
GTD-3000ExW
Instruction Manual
[Figure 1. GTD-3000ExW Overview]
Gas
Sensor Module
(GSA860EX)
Main Board
(Transmitter)
+24V DC
4-20mA Analog
Signal Output
Display Board
(User Interface)
Transmitter enclosure
Safety Power Supply Unit
(24VDC)
Safety Controller
(PLC or DCS)
Alarm
Signalling
GTD-3000Ex Gas Detector
Hazardous Area (Filed)
Safe Area
