Quick Detail
Place of Origin
HS-CODE
S04-
Package & Delivery Lead Time
Detailed Description
Brief introduction
TGas-1031 Series Combustible, Toxic and Harmful Gas Transmitter can continuously measure the concentration of site gas, and convert the concentration signal into 4-20mA output. It is extensively applied in petroleum, petrochemistry, chemical industry, gas, coal, metallurgy and electric power; safety detection in municipal administration, telecommunication and traffic tunnel construction; the place where combustible, poisonous and harmful gas might leak, such as gasholder station and special industrial factory building, etc.
Main features
Two kinds of optional mode of power supply, including centralized busbar type and independent area type
High and low concentration alarm, performing real-time monitor to gas
Anti-poisoning type gas sensor with high sensitivity
Automatic modification of ageing curve of sensor, keeping constant alarm sensitivity
Function of automatic recognition of sensor trouble, function of high concentration gas above-norm of sensor
Function of automatic detection at starting up, and it has advanced function of self-diagnosis and self-reparing.
The calibrated concentration value is adjustable, facilitating users to set by themselves
When the sensor loses the function of monitoring alarm because of ageing, the detector is capable of automatic recognition and alarm, so as to effectively avoid missing report.
Technical parameters
Parameters Characteristics
Detectable gas Combustible vapour of liquids, including methane, LPG, coal gas and gasoline, etc., as well as poisonous and harmful gas
Measurement precision ±5%F.S
Repeatability 2%
Measurement range Refer to lectotype table for details
Drift Zero drift: ±2%F.S
Range drift: ±5%F.S
Response time ＜30s（T90）
Sampling method Diffusion
Working environment Temperature: -30℃ to 60℃; humidity: below 85% (no coagulation)
Remote control mode By the adjustment mode by infrared remote control, the detector can be adjusted without opening of cover
4-20mA
output 4-20mA output corresponding to 0-100%, maximum load 800 ohms
Alarm output The effective alarm is 1 point or 2 points; each alarm shall use SPDT electronic relay.
Contact rating of alarm relay:
Ohmic load: 5A@24Vdc or 120Vac or 240Vac
Inductive load: 50VA
Communication Communication description: two-wire system parallel RS485 protocol, 32 points at most
Connection: Twisted pair with shield
Distance: maximum 1000m
Input voltage 24VDC±25%; power: 2W/way
Certificate Explosion-proof grade: ExdIICT5
Protection class: IP66
Using cable ≥2.5mm2×4 Screened cable line, outside diameter of cable is required to be between 6mm- 9mm
Lectotype table for detected gas (part gas)
Model Range Low alarm setting range High alarm setting range Low alarm point High alarm point
TGas-1031-FL 0-100%LEL 10%LEL-5%LEL 25%LEL-80%LEL 20%LEL 50%LEL
TGas-1031-CO 0-500ppm 25ppm-100ppm 100ppm-500ppm 35ppm 200ppm
TGas-1031-CO 0-1000ppm 25ppm-100ppm 100ppm-500ppm 35ppm 200ppm
TGas-1031-H2S 0-100ppm 5ppm-15ppm 15ppm-30ppm 10ppm 15ppm
TGas-1031-SO2 0-100ppm 1ppm-3ppm 3ppm-10ppm 2ppm 5ppm
TGas-1031-CL2 0-20ppm 3ppm-10ppm 5ppm-15ppm 5ppm 10ppm
TGas-1031-NH3 0-100ppm 20ppm-30ppm 30ppm-70ppm 25ppm 50ppm
TGas-1031-NO 0-250ppm 20ppm-50ppm 50ppm-100ppm 25ppm 50ppm
TGas-1031-NO2 0-100ppm 1ppm-2ppm 2ppm-5ppm 1ppm 2ppm
TGas-1031-HCN 0-30ppm 5ppm-10ppm 10ppm-15ppm 5ppm 10ppm
TGas-1031-PH3 0-1ppm 0.3ppm-0.5ppm 0.5ppm-0.8ppm 0.3ppm 0.6ppm
Executed standards.(GB Standard is China National Standard)
GB12358-2006 Gas monitors and alarms for workplace——General technical requirements
GB3836.1-2000 Electrical apparatus for explosive gas atmospheres——Part 1 General requirements
GB3836.4-2000 Electrical apparatus for explosive gas atmospheres—— Part 4 intrinsic safety "i"
Explosion-proof mark: ExiaIICT3, it applies to 0 zone, 1 zone and 2 zone, the place that contains IIA-IIC category and T1-T3 group of explosive gas mixture, and is qualified to get explosion-proof conformity certificate through inspection by CQST.
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