GT-AS1000b Industrial and commercial flammable gas detector

Technical Parameters

★ Display method:  OLED

★ Detection gas:  Combustible gas

★ Detection principle: Catalytic combustion

★ Detection range:  3～100%LEL

★ Accuracy:  ±2% F.S

★ Sample method: Free diffusion type

★ Response time: T90≤30s

★ Operating voltage:  DC 24V±15%

★ Working current:     ＜ 80mA / ＜ 150 mA  (with Sound and light alarm)

★ Maximum consumption: 2W/  3.6W (with sound and light alarm)

★ Output signal 1: DC 4～20mA

★ Output signal 2: Modular plug-way，Standard 485 signal RTU format (Optional)

★ Output signal 3: Modular plug-way，Implement bus signal output，Used with AS2000A controller（Optional）

★ Built-in relay :  A set of multi-function contact outputs（DC30V/2A），Can be selected as normally open, normally closed, passive, active, low-range action or high-range action.

★ Alarm set value:  Adjustable （Factory default 25%LEL、50%LEL）

★ Sound intensity:  85dB /1 meter (Sound and light alarm)

★ Case Material:  Aluminum alloy，External Metal baking varnish

★ Wiring system: hree-wire system（DC 4～20mA）、Four-wire system(Bus output form，Optional bus conversion module)

★ Explosion proof electrical interface: M20*1.5(Acousto-optic interfaces） 3/4”NPT(F)（Electrical Interface）

★ Explosion-proof grade:  Ex dⅡCT6 Gb

★ Explosion-proof sound and light alarm:  Optional

★ Protection classification: IP66

★ Weight: 1.3kg

★ Transmission distance: 1.5km（Loop resistance＜20Ω）

★ Ambient temperature: (-40～+70)℃

★ Relative humidity: (10～95)%RH（No condensation）

★ Pressure range: (86～106)kPa

★ Executive standard: GB15322.1-2003,GB3836.1-2010,GB3836.2-2010,GB50493-2009  

Product features

♦ Imported catalytic combustion sensor；

♦ Modular design of the whole machine according to SIL requirements；

♦ With ABS circuit board protection device；

♦ The sensor adopts a plug-in structure；

♦ Good anti-poisoning performance, anti-interference ability；

♦ Full-featured field-free opening operation， magnetic bar adjustment；

♦ Wide voltage supply, anti-reverse protection, short circuit protection and output current protection；

♦ A set of multi-function relay output is adjusted freely（Active, passive, normally open, normally closed, high limit action or low limit action）

♦ Standard 485 signal RTU format   （Optional）；

♦ Modular installation， adapt to a variety of different ways of mounting；

♦ Optional accessories, multi-line output to bus output；

♦ Can be equipped with live sound and light alarm，Show eye-catching，The lampshade is made of high molecular polymer material，Strong impact resistance；With three different sound and light tips（Fault, low segment alarm, high segment alarm）。

Explosion environment - Flame-proof connection mode of cable incoming wire  

◣ Internal terminal wiring : All lead-in wires are stripped 5mm and directly connected or connected to u-terminal after tin plating.

◣ Threading requirements : Separate into metal pipe (galvanized pipe) ,Do not enter the same tube with power line, lighting line and ac line.

◣ Cable: Use control cable such as KW-3×x1.5,or watertight cable such as JHS-3×1.5 (depends on the environment)

◣ Joint processing： All joints should be pressed and sealed with insulation sleeve to prevent short circuit, leakage and water immersion to meet the requirement of flameproof。 

Dimensions

Component diagram

Installation drawing