Home » Products » Analyzer » Gas Detector

Gas Detector

Introduction and Features
Introduction (Use and Application occasions)
The SY-QT-2000 series of fixed-type gas detection alarm instruments can continuously detect inflammable, toxic and harmful gases in an unattended, often dangerous environments such as chemical, power, smelting, pharmaceutical, oil field, warehousing, environmental protection, firefighting and municipal industries. It is an ideal piece of monitoring equipment to ensure both personal and equipment safety in multiple fields.

1. Advanced sensing technology
The imported sensors are highly sensitive, with a minimal temperature drift, long service life and require little to no maintenance.
2. Unique and reliable circuit design
The stability of the special chip and chip technology ensures a great consistency and high reliability.
3. A variety of signal outputs can be chosen: 4-20mA analog signal, switch signal and 485 digital signal for a variety of systems (can be customized).
4. Easy installation, commissioning and maintenance
Very convenient instrument installation wiring, commissioning and maintenance.

II Technical Performance and Targets
1. Parameters of Gas Detector for inflammable gas
Range: 0-100% LEL
Accuracy: < ±5% (F.S)
Minimum reading: 1% LEL
Response time: ≤ 20 seconds
Sensor service life: 36 months (imported sensor)
Detecting principle: Catalytic combustion type
Detecting method: diffusing type
Working method: continuous working for long time
Working voltage: 24V DC
Ex electrical interface: M20*1.5 female thread (G 3/4” and G 1/2” adapter optional)
Structure material: die-casting aluminum
Ex-proof: Exd II CT6
Working temperature: -40 to 70 Deg. C
Working humidity: ≤90% RH
Dimension: 180 x 190 x 95mm
Weight: 1580 g
Transmission distance: ≤ 1500 m
Connection cable: 3-core shield cable ≥ RVVP3*1.0mm2
Installation method: fixed bracket, piping outfitting, wall mounted
Output signal: 4-20mA current output, 0 for full span; 2 teams of switch output; 485 digital signal output
Fault alarm: the system can display detector connection short circuit and broken circuit fault, sensor failure and system power failure in a clear, concise manner.

2. Parameters of Gas Detector for toxic and harmful gases
Range: 0-1000 PPM (determined by gas property)
Accuracy: < ±5% (F.S)
Minimum reading: 1PPM
Response time: ≤ 30 seconds
Sensor service life: 24 months (imported sensor)
Detecting principle: Electrochemical type
Detecting method: diffusing type
Working method: continuous working for long time
Working voltage: 24V DC
Ex electrical interface: M20*1.5 female thread (G 3/4” and G 1/2” adapter optional)
Structure material: die-casting aluminum
Ex-proof: Exd II CT6
Working temperature: -20 to 60 Deg. C
Working humidity: ≤90% RH
Dimension: 180 x 190 x 95mm
Weight: 1580 g
Transmission distance: ≤ 1500 m
Connection cable: 3-core shield cable ≥ RVVP3*1.0mm2

3. Description of Fixed type Oxygen Detector
The SY-QT-2000-O2 oxygen detection alarm instrument is used for on-line oxygen analysis and detection, and alarm of on-site hypoxia and peroxy. It can accurately detect the oxygen content, as the test results will not be affected by a variety of acidic and alkaline impurities in the gas. With its high sensitivity and accuracy and 3-wire isolation wiring, it is ideal for a variety of dangerous places.

4. Description of Fixed type Carbon Monoxide Detector
Advanced microprocessor technology
Range: 0-2000 ppm
Explosion-proof design, fast, credible and stable
Power supply: 12-30V DC
RS485 output (optional)
3-wire 4-20mA analogue output; 1-way relay output (optional)
With site sound and light alarm
Fast response and high accuracy
Best performance and low installation cost
Low maintenance cost

5. Description of Fixed type Hydrogen sulfide Detector
The SY-QT-2000-H2S hydrogen sulfide detection alarm instrument is used for continuous on-line detection of the concentration of hydrogen sulfide in a variety of industrial and specialized environments. The on-site sound and light alarm both play an early warning role in keeping the working environment safe. The instrument uses imported electrochemical sensors and microcontroller technology, with significant advantages in a stable signal, high accuracy and good repeatability, as well as the explosion-resistant wiring being applicable for a variety of dangerous places. The gas detector is also compatible with a variety of control alarm, PLC, DCS and other control systems, and can simultaneously achieve on-site alarm, remote monitoring and alarms.

Inquiry Form