Brand Name : chicheng
Model Number : QB2000N
Certification : NTEX
Place of Origin : china
MOQ : 1
Price : usd322/pc
Payment Terms : t/t
Supply Ability : 10000pcs/month
Delivery Time : 6 working days
Packaging Details : in carton
Display : LCD
Refrigerant such like ammonia will be used in cooling room. But the ammonia gas is very toxic, leakage of ammonia is very dangerous.
So ammonia gas monitor QB2000N is always used in cooling room, refrigerant tank, or beside the freeze machine to monitor the gas leakage in real time.
Characteristics:
◆Sensor types:electrochemical sensor
◆4-20mA analog output(3+ channel) for direct communication to DCS system and RS485 ModBusoutput
◆Sensormodule design on -spot replacement s and automatically distinguish sensor fault and current display fault simultaneously.
◆LED Display(LCD optional)
◆Password verification for repeat operation, avoid fault operations.
◆-40~+70℃ following compensationfor accurate detecting.
◆Second grade visual alarms on-site and Relay(connected with audible/visual alarms or drive exhaust device).
◆User-selectable alarm setpoint(s).
Technical parameters:
Environment Parameter |
Environment temperature:-20℃~+60℃ |
Relative humidity ≤90%R.H. |
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Technical Parameters |
Working voltage: 16~30VDC |
Working current: QB-01T is 120mA, others ≤50 mA |
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Output signal: 4~20mA standard signal two wire type output (QB-01T three wire type) |
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Sensor |
electrochemical sensor; QB-01T is catalytic combustion type |
Respond Time |
T90 less than 30 seconds |
Exterior Structure |
Weight ≤900g |
Mounting |
type: wall-mounted |
Transition cable: two core shield cable (QB-01T uses three core shield cable), section 2×1.5mm2, external diameter ¢10mm |
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Transferring distant ≤1000m |
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Anti-explosion Class |
Exd IICT6(used for explosion proofing);ExiaIICT4(used for intrinsic safety type) |
Ingress Protection |
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 |
0-25ppm |
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 |
Flammable Gas 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. |
Ammonia(nh3) gas monitor/detector transmitter for refrigerant leak Images |