Infrared Carbon Dioxide Gas Transmitter CRH Series

Product catalog summary

Introduction
The infrared fixed CO2 gas transmitter by Wuhan Cubic Optoelectronics Co., Ltd integrates advanced NDIR technology and high-quality components. It is widely used in industries such as petroleum, chemical, and metallurgy. The device supports various outputs including wide voltage, infrared remote control, RS485, 4-20mA, and features a two-level alarm output and LED display. It boasts high accuracy, resolution, long life, and easy maintenance.

Features
- Diffusion-type sampling method
- Real-time digital gas concentration display with LED
- Audible alarm for safety
- Metal casing for industrial monitoring

Specifications
- Measurement Method: NDIR
- Power Supply: DC 8-25V
- Range: 0-5000ppm to 0-10%vol
- Resolution: 10ppm for 0-5000ppm, 0.01% for 0-10%
- Display: 4-digit LED
- Accuracy: ≤±0.1% for 0-0.5%, ≤±0.05%+5% of readings for >0.5%
- Response Time: T90 <25s at 20℃
- Zero Repeatability: ±1%FS
- Zero Drift: 1%/month
- Working Temp: -20℃ to 55℃
- Storage Temp: -40℃ to 85℃
- Warming Time: 30s
- Output: Digital RS485, Analog 4-20mA
- Alarm Settings: Low alarm at 20% LEL, high alarm at 50% LEL, adjustable
- Lifetime: >5 years
- Standby: ≥10 hours
- Sampling Method: Diffusion

Application
The transmitter is ideal for monitoring CO2 concentrations in various industries such as chemical, mining, fermentation, metallurgy, and storage areas.

Installation
The installation height depends on the gas weight ratio. For gases lighter than air, install 30cm from the ceiling. Consider the gas leakage speed for high ceilings. The installation location is determined by potential leakage sources and working structure. The detection radius is 7.5m indoors and 15m outdoors. The transmitter should be close to small leakage points but further from large potential leaks. Connect the power supply using expansion bolts.

Instrument Configurations
- Gas Transmitter CRH
- Remote Controller for zeroing, alarm setting, and adjustments
- Calibration Cover
- Expansion Bolt for installation

Catalog excerpts

Infrared Carbon Dioxide Gas Transmitter CRH Series-1

INFRARED FIXED CARBON DIOXIDE (CO2) GAS TRANSMITTER Wuhan Cubic Optoelectronics Co., Ltd Add:Fenghuang No.3 Road, Fenghuang Industrial Park,Eastlake Hi-tech Development Zone, Wuhan 430205, China Tel: 86-27-81628831 Fax: 86-27-87405251 www.GasSensor.com.cn

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Infrared Carbon Dioxide Gas Transmitter CRH Series-2

cuwg oproajtCTHOfMCs co-^m ■ Infrared fixed CO2 transmitter is a perfect integration of world-leading NDIR technology and premium components. widely used in petroleum, chemical, metallurgy . ■ It support wide voltage output, infrared remote control, RS485, 4 ~ 20MA and 2 level alarm output, LED display and so on.

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Infrared Carbon Dioxide Gas Transmitter CRH Series-3

Proprietary infrared gas analysis technology, with high accuracy, high resolution, long life and easy maintenance; ■ High and low alarm settings, two levels of audio and light alarms; ■ Automatic zero calibration with air; ■ Diffusion-type sampling methods; ■ Real-time Digital displaying gas concentration with LED; ■ Audible alarm device to prevent accidents and ensure the safety of life; ■ Metal case for industrial online monitor

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Infrared Carbon Dioxide Gas Transmitter CRH Series-4

wUhMi CU.3IC G^TOtLtCTWOiviCS CO-^m Specifications

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Infrared Carbon Dioxide Gas Transmitter CRH Series-5

WUhMiM CU*tC ti*-TG*±JfcCT*OmC:i CO^m Fixed CO2 gas transmitter is an ideal instrument with alarm function to monitor the concentration of CO2, such as chemical industry, mine, fermentation areas in wineries, metallurgy, dairying, workshop, storage as well as the leakage of CO2.

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Infrared Carbon Dioxide Gas Transmitter CRH Series-6

WUHAM Cu«*c OfTO^CTKONiCS CO^LTD. ■Transmitter mounting height is decided by the measured gas weight ratio. If the measured gas is less than air, the transmitter is usually installed in the up place, 30cm from the ceiling; if the ceiling is high (higher than 5 meters), the proper installation height should be considered by the gas leakage speed; ■Transmitter installation place is determined by gas leakage source and working structure. 1) Firstly to check the area of working place and possible leakage points to determine required quantity of gas detector. In general, the detection probe radius...

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