Gas detector of Imported sensors
120dB visual&audible alarm
3+2 LED display
4-20mA /RS485 output
Sensor lifetime readable
Port: chinese main port
Minimum Order Quantity: 1 Set/Sets
Supply Ability: 1000 Set/Sets per Month
Payment Terms: L/C,T/T,Western Union
Contact Supplier
Packaging Detail: standard exporting package
Delivery Detail: as per customer's request and advance payment
GQB-200A9 Online explosion-proof gas alarm detector system
Performance and characteristics
Detect all kinds of gases
Sensor lifetime readable
Multi-sensor design, applied for extreme environments
Importing sensor with original package
Double-window LED display with 3+2 digits
High brightness LED instruction( clearly seen in 10 meters)
Output of 4-20mA,Rs485( optional)
All stainless steel of shell, 120dB sound with explosion-proof sound&light alarm
Qualifications
1.one patent of practical new technique.
2.two patents of appearance technique.
3.fire control type approval of the ministry of public security.
4.National explosion-proof electric inspection.
Characteristics of sensor
1.plug and play
2. High concentrations protection (applies only to catalytic sensor)
3. High precision & wide range hardware VGA (variable gain amplifier) avoids the sensitivity decrease brought only by software amplification.
4. Each probe contains a extra temperature sensor to compensate the impacts to gas sensor by temperature.
5. Artificial intelligence compensation technology makes reading more smooth and stable.
6. Sensor lifetime system from the viewpoint of sensor helps the user know whether the sensor need to replace or not.
7. Double output of current completely satisfy the requirements of Dual-use machine.
The compound gas transmitter of GQB-200G9 is applied for semiconductor, catalytic combustion, electrochemistry, nondispersive infrared and PID sensors
Technical parameters
| Sensor type | Catalysis sensor |
| Operating current | <400mA |
| Operating voltage | DC24V±5V |
| Signal outputs | 4-20mA,RS-485(optional) |
| display | 3+2 LED display 3-color LED status light |
| Relay output | AC220V/5A DC24V/5A |
| Detection gas | Combustible and toxic gases |
| Detection range | 0-100%LEL |
| Alarm concentration | adjustable |
| T90 | <15s |
| Detection precision | 3% |
| Zero drift | 2%/year |
| Lifetime of detector | >3year |
| Allowable application areas | Hazardous location zone I |
| Alarm of sound & light | 120dB red color alarm |
| Ambient condition | Outdoor usage |
| Relative humidity | 10~95%RH(Non condensation) |
| Atm press | 86~106Kpa |
| Operation temperature | -40ºC~+70ºC |
| Storage temperature | -40ºC~+85ºC |
| Transmission cable | Three-core shielding line; Wire diamete 1~1. 5 mm2 |
| Transmission range | within 2Km |
| Electric connector | M20*1.5(cast aluminium) G3/4(stainless steel) |
| Explosion-proof grade | ExdIICT6 |
| weight | 2.5kg(cast aluminium) 4kg(stainless steel) |
| Protection grade | IP65 |
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