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GRI Instrument, the professional manufature of gas sensor and gas detector since 2009.
Our office and factory are both located in Hunan Changsha, China, Welcome to China, and welcome to our company.
We aim at suppy the Excellent quality products, best service.
We will have more cooperation once you learn us more.
GRI TEAM.

Factory Information


1 ,Overview:
Oxygen monitoring controller based on customer specific needs, it has integrated style and separated style, sensors using the world the most advanced electrochemical gas sensor, the sensor portion using a high-precision AD low temperature drift and high stability power processing circuitry to protect the instrumentation fast, accurate measurement, stable and repeatable, designed for harsh and humid environments toxic gas and oxygen measurement under. Alarming instrument has an automatic function, providing customers with on-site security.
2 ,Feature:
real-time monitor toxic gases and oxygen concentrations
adopted imported high-precision electrochemical sensors
Large LCD screen display various parameters intuitively
Controller with tri-color backlit, intuitive alarm
Product design integrated style and split style, adapted to a variety of environmental monitoring and control
Industrial output has 4-20mA current output and RS485 network selection
It comes with two relay control output
Product supply voltage 12-24VDC
Toxic O2 gas | |||||
Sensor type | Electro chemical sensor | ||||
range | 0-25%vol, 35%VOL | ||||
accuracy@25℃(77℉) | 0.1%VOL | ||||
Data | |||||
Warm-up time | 2 hours ( first time use,/2 min ( normal use) | Power supply | 9-24VDC | ||
consumption | 1 W average | Analog output | 3 ways analog output, 4~20mA(can set before out factory) | ||
Weight | 300g |
| 140mm(H)×100mm(W)×40mm(D) | ||
Housing | PC/ABS Flame retardant plastic | Protection grade | IP30 | ||
LCD | 3 color background light LCD display CO2,temperature and humidity green:normal yellow: one grade alarm red: second grade alarm | RS485 communication port(optional) | RS-485 protocol, 9600bps Baud rate, independent address set | ||
Operation environment | 0~50℃(32~122℉);0~ 95%RH(non-condensing) | Storage condition | -10~60℃(14~140℉)5~95%RH(non-condensing) | ||
Net weight | 300g | dimension | 140mm(H)×100mm(W)×40mm(D) | ||
Material | PC/ABS flame retardant plastic |
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Product selection
IAQ-2-EC wall-mounted toxic gas and O2 gas detector | |||||
IAQ-2-EC | A | wall-mounted integrated installation |
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B | wall-mounted separated installation |
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| A | Current (4-20)mA output |
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R | RS485 signal output |
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F | Current (4-20)mA+RS485 signal output |
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W | Wireless signal output |
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| C | With relay control |
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N | Without relay control |
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Long term of 12 months warranty period, and life time service
--Air Pollution/ Quality monitor(IAT Series)
--Portable single gas detector(WASP-XM/D1 Series)
--Portable multi-gas detector(WASP-D4 Series)
--Fixed single gas detector(GRI-9106 Series)
--Wall-mounted gas detector(IAQ-2 Series)
--NDIR infrared gas sensor
--Gas detection module
1, Q: What about after-sale service?
A: 12 months warranty for all kinds of products; we also provide life-long paid service.
2, Q: What about lead time?
A: Usually we offer 3-7 working days after order confirmed and payment received, and we can also accept an urgent order for prompt shipment.
3,Q: What about the Shipping method?
A: Please kindly note that our product are on EXW term, and need caluclate the freight based on the quantity. Once you have the order, please contact us to chekc hte discounted freight.
We choose the DHL, UPS, TNT FedEx express normally. (Also you can arrange the express to pick up the parcel from our factory)
4, Q: Does your company accept customization?
A: Contact us first. As a factory, we can do customizing service on the condition of Quantity.
Petroleum, petrochemical, chemical, environmental
paper, paints, coatings, mining, electroplating, textile
coking plants, indoor air quality monitoring
environmental monitoring systems, health monitoring systems.
Can be measured gas species:
CH2O, TVOC, CO, H2S, NO2, NO, SO2, CL2, NH3, H2, PH3, O3, F2, HF, HCL, HBR, C2H4O, COCL2, SIH4, CLO2, HCN, C2H4, SF6, combustible gases and so on.
Let's Protect our earth together!
1. Standard packing.
2, Inner OPP Bubble bags to protect the sensor.
3, Package Size: Approx 17cm*15cm*9cm, for your refference only.
4, Will with the Shipping Mark.



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