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 Third-Party BizVerify
Shenzhen Graigar Technology Co., Limited
Verified By : SMR
Verified Date : 2019-04-18

Product Catalog 

 

TGas-1031 Combustible,Toxic,Harmful Gas Transmitter

Model No.︰TGas-1031
Brand Name︰GRAIGAR OR OEM
Country of Origin︰China
Unit Price︰US $ 900 / pc
Minimum Order︰1 pc
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Product Description

TGas-1031 Series Combustible,Toxic and Harmful Gas Transmitter

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
l Two kinds of optional mode of power supply, including centralized busbar type and independent area type
l High and low concentration alarm, performing real-time monitor to gas
l Anti-poisoning type gas sensor with high sensitivity
l Automatic modification of ageing curve of sensor, keeping constant alarm sensitivity
l Function of automatic recognition of sensor trouble, function of high concentration gas above-norm of sensor
l Function of automatic detection at starting up, and it has advanced function of self-diagnosis and self-reparing.
l The calibrated concentration value is adjustable, facilitating users to set by themselves
l 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

 

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
Payment Terms︰TT/LC/WU/PAYPAL
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