Beijing Qinglian Measurement and Control Technology Co., Ltd

Home page

Product

Contact

Beijing Qinglian Measurement and Control Technology Co., Ltd

Tel：18500242456
Email：sales@qingliancekong.com

Address: Inside Beijing Taixing Art Institute, Shuipo Village, Gaoliying Town, Shunyi District, Beijing

OMA-300 Near-Infrared SIGMA Analyzer

Continuously measure the concentration of substances in liquid or gaseous components.

Using an indium-gallium-arsenide detector, measurements can be made in any of the following three wavelength ranges: 1350–1650 nm, 1550–1850 nm, and 1750–2150 nm.

Product Features

Instrument Features

Continuously measure the concentration of substances in liquid or gaseous components.
All-solid-state design with no moving parts—modernized design, low maintenance requirements.
Armored fiber optic design, independent measurement cell structure – the sample never enters the instrument’s interior.
High stability tested over decades in various environmental conditions.

Analysis application

The OMA-300 near-infrared SIGMA analyzer provides continuous, real-time measurement results. Based on Beer-Lambert’s law, this instrument correlates the optical signal of a specific chemical substance with its actual concentration by measuring the absorbance of liquids or gases. The instrument employs an indium-gallium-arsenide detector and allows users to select one of three different wavelength ranges for scanning: 1350–1650 nm, 1550–1850 nm, and 1750–2150 nm.

These measurement bands are ideally suited for applications including: water in liquid solvents, water in propylene, ethylene concentration, validation of mobile phases for high-performance liquid chromatography in biopharmaceuticals, acrolein purity, acetaldehyde, and more.

Technical Principle

To analyze the concentration of a specific substance, this analyzer uses an indium-gallium-arsenide detector to perform spectral measurements in the infrared wavelength range, covering the bands from 1350–1650 nm, 1550–1850 nm, and 1750–2150 nm. The detector quantifies the light absorbed by the substance, and the OMA converts this optical signal into a high-resolution absorption spectrum.

OMA uses a long-life tungsten light source to direct an optical signal into the sample inside the flow cell. The optical signal is transmitted via optical fiber to the measurement cell, where it comes into contact with the sample. Samples of different concentrations will produce distinct optical signals.

Internal structure

Technical concept

Technical Parameters

The following technical parameters are based on the premise that all components and the sample system are supplied by AAI, and that the system installation has been approved by AAI. For technical parameters under other conditions, please consult AAI’s sales team directly.

Measurement principle	Indium Gallium Arsenide Infrared Spectrum
Detector	SIGMA Spectrometer
Measurement band	1350–1650 nm, 1550–1850 nm, and 1750–2150 nm
Light source	Tungsten lamp
Optical signal transmission	600 µm core, 1.8-meter fiber optic cable; other lengths available upon request.
Light path	Depending on the specific measurement application.
Sampling	Extractive Preprocessing System
Calibration	Calibration before shipment
Human-computer interaction interface	Industrial controller, LCD touch screen, pre-installed ECLIPSE software
Data storage	SSD solid-state drive

Operating environment

Instrument installation location	Indoor/Outdoor
Ambient temperature	Standard: 0–35 degrees Celsius Optional: -40 to 60 degrees Celsius To avoid thermal radiation, if installing outdoors, please avoid direct sunlight and we recommend at least equipping a sunshade.
Sample temperature	Standard –20 to 70 degrees Celsius Optional: Not higher than 150°C; requires a cooling extension rod.
Sample pressure	Not higher than 3000 psig

Power requirements

Voltage	Single-phase 85 to 264 VAC
Power consumption	45 watts

Output

Standard output	Each measured substance is equipped with one 4-20 milliamp analog output and two digital outputs for fault alarms and pre-processing control.
Optional output	Modbus TCP/IP; RS-232; RS-485; Fieldbus; Profibus; HART