Description

Industrial Gas Detector Alarm System 4-20mA/RS485 Control Panel w/ Gas Monitor

QB2000System includes control panel & fixed gas monitor.

1-8 Channel Gas Detector Control Panel QB2000 gas alarm control panel is a multi-point monitoring of the latest design with simple operation and it combines with any gas detectors to form an industrial gas detection system. This control panel embeds micro processor as control unit, when the detected gas density in the air reaches or exceeds the pre-set value, the controller will give out audio-visual alarm immediately to remind you take safety precautions and alert the corresponding valve, exhauster and other equipment to avoid explosion, fire, toxic gases to protect the safety of life and treasures.

QB2000N/T Gas Monitor is a fixed gas detecting transmitter, with 4-20 mA or RS485 ModBus RTU output proportional to the gas leakage concentration with original imported electro-chemical sensor. It

monitors gas leakage by natural diffusion. It is flexible, durable, accuracy, stable and etc. and it can be directly connected with DCS systems or Central unit. With relay output, once the concentration exceed the preset alarm point(threshold) it will start the acoustic-optical alarm on the central unit and drive the external equipment like exhaust fans. It has been widely used in petrol, chemistry, metallurgy, artifice, gas transportation, biological medicine and water procession etc.

QB2000 Control Panel Characteristics:*l  high-performance sensor

*  128*64 dot matrix big screen liquid digital display

*  various gas detector together to fix*l  display the detected gas density in distance

*  high sensitivity, and quick response

*  Automatic compensation for temperature drift and time drift

*  The up and low alarm points of each channels can be set separately

*  8 channel 4-20mA signals output

*  RS485, RS232 communication port can upload data to computers & 4 Relay output

*  and the relay setting is programmable

Characteristics for QB2000N/T Gas Detector :

1. 4-20mA analog output for direct communication to DCS system, RS485 ModBus output for central unit

2. Relay output for connecting external device

3. LCD display screen(LED display screen optional)

4. Sensor module(block) design on -spot replacement s and automatically distinguish sensor fault and current display fault simultaneously.

5. Password verification for repeat operation, avoid fault operations.

6. -40~+70℃ following compensation for accurate detecting.

7. Second grade visual alarms on-site and Relay(connected with audible/visual alarms or drive exhaust device).

User-selectable alarm setpoint(s).

Note: QB2000N is with the digital display screen but QB2000T is without the digital display screen. The visual and audible alarm is optional.

QB2000 COntrol Panel——

Capacity: 1-8 detectors is available

8 detector of 4-20mA or RS485 digital signal

Operation condition:-20~+5 degree; Humidity<90%RH

Accuracy: ≤±3% F.S

Response: T90<30s

Display mode: LED digital display

Alarm: Audible and visual alarm > 110db

Alarm values: The first alarm value The alarm value can be set by users.

The second alarm value The alarm value can be set by users.

Transmission cable(RVVP): 2-wires type detector 2×1.5mm2 or 3-wires type detector

3×1.5mm2 length the transmission distance:<1000m

Alarm output: 2 relay output(AC 200V 3A resistive load)

Power supply:AC220v, 50HZ < 4W.

IP grade : IP44

Size: 25x38x10cm Net: 3.0kg

QB2000N Technical parameters:

1.      Detect gas: combustible gas, toxic gas, oxygen

2.       Sensor type: original imported electro-chemical sensor or catalytic combustion sensor.

3. Range: see the attached chart

4. Resolution: 1% LEL,0.1%VOL, 1ppm or 0.1ppm

5. Accuracy:<= + 3% F.S

6. Response time:T90<30s.

7. Working current:≤50 Ma

8. Output signal: 4 to 20mA standard signal(RS485 output optional)

9. Power supply to the detector terminals: 16~30V DC.

10. Ambient Parameter: Temperature:-20℃~+60℃ Humidity: < 90%(without condensating)

11. Type of cable: 3 or 4 active wires screened between detector and centralized unit. 3×1.5mm2 for 4-20mA signal OR 4*1.5mm2 for RS485 signal, external diameter >=10mm

12. Transmition Distance:<=1000meter

13. Mounting Screw thread: G1/2.

14. Weight: 1200g.

15. Anti-explosion Class: Ex d IICT6Gb

16. Protection Class:IP66.

Detector Model	Gas Detected	Range	Range Optional	Resolution	Responding Time
CO Detector	CO	0-1000ppm	0-500/2000/5000ppm	1ppm	20s
O2 Detector	O2	0-25%VOL	30%VOL	0.1%VOL	20s
O3 Detector	O3	0-10ppm	0-100ppm	0.01ppm	20s
H2S Detector	H2S	0-100ppm	0-50/200/1000ppm	1ppm	30s
H2 Detector	H2	0-1000ppm	0-5000ppm	1ppm	30s
CL2 Detector	CL2	0-20ppm	0-10/100ppm	0.1ppm	30s
NH3 Detector	NH3	0-100ppm	0-50/500/1000ppm	1ppm	30s
SO2 Detector	SO2	0-20ppm	0-50/1000ppm	0.1ppm	30s
NO Detector	NO	0-250ppm	0-500ppm	0.1ppm	30s
NO2 Detector	NO2	0-20ppm	0-50/100ppm	0.1ppm	30s
CH2O Detector	CH2O	0-50ppm	0-5/10ppm	0.01ppm	30s
HCL Detector	HCL	0-20ppm	0-20/100ppm	0.5ppm	30s
LEL Detector	EX	0-100%LEL	0-100%LEL	1%	30s
For the gas that is not covered here though, please don’t hesitate to contact us.

 

 

Home Gas Detector Alarm

KERUI GD13 Home Universal Security Instruments liquefied petroleum gas natural gas methane Combustible Gas Detector Alarm Sensor System with Voice Warning prompt

• The gas sensor is a smart combustible gas detector with voice prompt, microprocessor control, support displaying of the gas concentration. When trigger the gas detector, it will alarm with build-in siren, send notifications to the wireless alarm system and close the relay output at the meantime. This detector adopt catalytic combustion method sensor which is stable and reliable. It keep the place safe from the threats of combustible gas such as liquefied petroleum gas, natural gas, methane, etc.
• Human voice prompt, Chinese and English are optional. High reliable catalytic combustion method .Gas concentration displaying (PPM). Power supply from AC 100V-240V or build-in battery. Intelligent microprocessor control. Auto detect sensor failure. Auto sending notification to host when alarm. One relay output when alarm
• Indicator light , Display screen , Start test button , Alarm siren
• Avoid installing the detector close to the following sources of interference: direct air flow from vents, fans, doors, windows, sources of steam,oil vapor,etc.
• All wires installation must accord with the national and local effective laws and criteria.The wires must have the suitable size and colorful marks for avoiding connecting error. And unsuitable connection of wires will result in the alarm error while gas leaking happened. NOTICE: It has been insulated when bale the item. After receive the item, need remove insulation paper by the side of the battery before use.