Basic Info.
Function Type
Infrared Range and Communication System
Product Description
Product Introduction
The QHBI Series Optical Sensor Module (ND IR) is a specialized product line developed for high-quality gas analysis. During the design phase, particular emphasis was placed on achieving high stability and low detection limits. The module utilizes high-performance infrared LEDs (IR-LED) and micro thermal radiators as light sources, compatible with gas measurement technical requirements. It employs high-sensitivity imported photoelectric tubes as signal detection units, complemented by self-designed circuits and gas-optical pathways. This configuration enables reliable detection of ppm-level concentrations of carbon dioxide, carbon monoxide, hydrocarbons, and nitric oxide.
This module offers multiple measurement ranges for different detection gases and features a rapid response time of no more than 2 seconds, meeting diverse testing requirements. Additionally, to accommodate various application environments, it can be equipped with a the rmostatic housing maintaining a temperature range of 40ºC~60ºC.Users can select this optional component based on their specific operational conditions.
Product Features1.Optical filtering and compensation algorithm are used to eliminate the cross interference between gases
2.The internal pressure sensor and automatic pressure compensat-ion can meet the use under different pressures of 70kPa~ 120kPa
3.Constant temperature design, no need for temperature compensation, the indication is more stable, more accurate
4.The structural reinforcement design is not afraid of vibration and can be used in high vibration environment such as vehicle driving
5.The standard MODBUS communication protocol greatly reduces the workload of user secondary development and debugging is more simple and convenient
6.It has a fast response time of no more than 5s
7.Internal flow control, the external air pump only needs to reach the required negative pressure value to ensure constant flow
8.Provide supporting debugging and test softwareApplication Scenario QHBI series optical sensor module (NDIR) can be widely used in industrial production process monitoring, exhaust gas emission monitoring, flue gas emission monitoring, atmospheric environment monitoring, closed space air quality monitoring and so on.
Technical Parameter
Gas detection range (optional)
| | 100% | 50% | 20% | 10% | 5% | 1% | 5000ppm | 2000ppm | 200ppm | 50ppm |
|---|
| CO2 | √ | √ | √* | √ | √ | √ | √ | | | |
| CO | √ | √ | √ | √* | √ | √ | | √ | √ | √ |
| HC | | | | | | | √ | √* | √ | √ |
| NO | | | | | | | | | √ | √ |
Note: * The three gas ranges of the indicator can be combined, that is, one module can complete the detection of these three gases at the same time Typical equipment parameters
| Parameter | Specification |
|---|
| measuring principle | Non-dispersive infrared (NDIR) |
| measuring range | CO: 0~5% CO2: 0~20% |
| gas-flow rate | 0.5~1.5L/min |
| size | 135mm×104mm×35mm(including insulation shell) 120mm×90mm×30mm(without insulation shell) |
| weight | About 250g(without insulated shell) About 650g(including insulated shell) |
| union joint | 4/6mm tube |
| Service life of infrared radiation source | >20000h |
| preheating time | <3min |
| response time (t90) | <2s |
| Detection limit (Lo) | CO: 10ppm CO2: 20ppm |
| linear error | CO: <25ppm CO2: <50ppm |
| repeatability | CO: 15ppm |
| CO2: 100ppm |
| Long-term stability (zero) | CO: ≤±125ppm/1000h CO2: ≤±100ppm/1000h |
| Long-term stability (span) | CO: < ±60ppm/1000h CO2: ≤±200ppm/1000h |
| pressure influence | <Read 0.01%/1kPa |
| supply voltage | 24VDC |
| peak point current | <1.7A |
| Power consumption (average) | <3W |
| Digital equipment interface | RS232 (standard), TTL, RS485: 21mA, 0~5V (optional) |
| working temperature | -20~45ºC (constant temperature shell condition) |
| storage temperature | -20~60ºC |
| prees sure | 70~110kPa |
| ambient humidity | 0~95% relative humidity (non-condensable) |
Address:
Building 15, Instrument and Meter Industrial Park, Zibo, Shandong, China
Business Type:
Manufacturer/Factory
Business Range:
Chemicals, Construction & Decoration, Electrical & Electronics, Health & Medicine, Industrial Equipment & Components, Instruments & Meters, Manufacturing & Processing Machinery, Metallurgy, Mineral & Energy, Service, Tools & Hardware
Company Introduction:
Zibo Qinghe Testing Technology Service Co., Ltd. Is affiliated to Zhilian Wanwei Technology Co., Ltd. It focuses on the fields of environmental monitoring and mobile source emission testing. Its main products and services include gas sensor modules. Portable, online and chassis gas analyzers; Mobile machinery RDE testing services, etc. The company integrates R&D, production, sales and service, covering multiple industries. Welcome friends from all walks of life to visit, guide and conduct business negotiations. The Environmental Protection Instruments and Sensors Division is a department under Qinghe Technology that focuses on environmental monitoring and analysis. We are committed to developing and providing advanced environmental protection instruments and sensors to support environmental management and protection efforts on a global scale. Our products and services are widely applied in the fields of industry, agriculture, urban environment, natural resource conservation and scientific research.
The company has currently been granted a total of 26 patents, including 22 utility model patents and 4 invention patents. There are 12 Copyrights for computer software