Innovation in Air Emissions
Measurement .

Our Direct Optics product line is designed to address unique measurement challenges faced by customers in the air emissions market.

Reliable, High-Precision Air Quality Measurement

At Direct Optics, we provide cutting-edge solutions for monitoring nitrogen oxides (NO2, NOX, and NO) with accuracy and reliability. Our G60 dual-channel analyzer and PhoNO™ instruments deliver precise measurements to meet regulatory compliance, while our Automated Air Sampler ensures effortless sample collection for both routine monitoring and pollution events. Explore our innovative technologies designed to support your environmental monitoring needs.

Dual-Channel NO2-NOX-NO Analyzer: The Future of Gas Analysis

Our dual-channel analyzer, a CRDS-based instrument, is dedicated to achieving high-precision measurement.

Our patented self-aligned optical cavities allow this instrument to provide direct and continuous measurement of NO2 , NOX and then NO, setting it apart from the competition. The two independent measurement channels provide for simultaneous readings and outputs of NO2 and total NOX . The result? Critical and accurate pollution information at your fingertips.

Direct-optics. Innovation in Air Emissions Measurement

Why Choose the Direct Optics Dual-Channel Analyzer?

  • Dual-channel technology for direct, simultaneous NO2 and NOX measurement
  • Ultra-low detection for precision
  • Wide measurement range
  • Quick interference-free NO2 /NOX readings
  • Fast response time (< 5 seconds to 90%)
  • Remote access to data
  • Customer friendly interface
  • Minimal maintenance
  • Numerous applications

PhoNOTM – Accurate NO2 Measurement Made Easy

Nitrogen dioxide (NO2) regulation is essential for public health and the environment, but inaccurate measurements are common and problematic. Analyzers using Heated Metal Converters (HMC) often overestimate NO2 levels. Our Photolytic Converter (PhoNO) is here to change that.

The Direct Optics PhoNO precisely measures NO2 concentrations and selectively separates them from other nitrates present in the air, eliminating the issue of overestimation.

Direct-optics. Innovation in Air Emissions Measurement

Why Choose the Direct Optics PhoNOTM?

  • Eliminate erroneous NO2 over-reporting

  • Interference-free NO2/NOX measurement

  • Direct replacement for molybdenum/ss converters

  • Greater than 96% conversion efficiency

  • Linear, stable, repeatable conversion

  • Wide range (0.5 ppb – 50 ppm tested)

  • Cost-effective solution

  • Fast response (< 2 seconds)

  • Simple installation

Automated Air Sampler – Precise Pollution Capturing

Our Direct Optics Automated Air Sampler offers an effective solution for capturing gases in response to specific events or on preset schedules. It has multi-canister sampling capabilities and enables valuable insights into pollution events and air quality measurement in sensitive environments. With its user-friendly touch screen and intuitive software, our sampler will make capturing gases simple and hassle-free.

Direct-optics. Innovation in Air Emissions Measurement

Why Choose the Direct Optics Automated Air Sampler?

  • Modbus TCP/IP communication

  • Remotely accessible HMI

  • Automatic label printout

  • Onboard UPS

Environmental Impact:

The Critical Role of Accurate NO₂ Measurement

Our products play a vital role in environmental preservation. Nitrogen Dioxide (NO2) and Nitric Oxide (NO), collectively known as NOX, originate primarily from combustion sources, posing a threat to both human health and the environment.

NO2, a potent pollutant, contributes to the formation of ozone (O3), leading to ozone-related issues. It also transforms into Nitric Acid, a key driver of acid rain, impacting water bodies and soil. Accurate NO2 measurement is essential for addressing climate change, formulating air quality policies, and improving emissions modeling. Our innovative solutions are dedicated to achieving these environmental goals.

History

Direct Optics, a subsidiary of Global Analyzer Systems Ltd., was founded with a commitment to advancing air emissions measurement. Through years of research and recognizing the need for a more accurate and efficient way to measure NO2 and NOX, we developed the G60—the first dual-channel CRDS analyzer capable of direct measurement, eliminating the inaccuracies of traditional conversion techniques. Built on our expertise in Cavity Ring-Down Spectroscopy (CRDS), the G60 ensures reliable regulatory compliance and supports atmospheric research. This breakthrough provides continuous, real-time data for both regulatory and research applications.

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