Nitric Oxide
NONitric oxide (NO) is a colorless gas produced during combustion processes, lightning strikes, and biological processes. In the atmosphere, NO quickly oxidizes to nitrogen dioxide (NO₂). Together, NO and NO₂ are referred to as NOx—major contributors to smog and acid rain. Industrially, NO is used in chemical synthesis and semiconductor manufacturing. Medical applications include treatment of pulmonary hypertension in neonates. OSHA PEL is 25 ppm. Detection is relevant in automotive emissions testing, power plants, combustion research, and medical facilities using therapeutic NO.
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Key Information
Essential safety and exposure information for Nitric Oxide
Health Effects
- Respiratory irritation and damage at high concentrations. Combines with hemoglobin
- reducing oxygen transport.
Common Sources
- Combustion engines
- power plants
- industrial processes
- and welding operations.
Exposure Limits
- OSHA PEL
- 25 ppm
- NIOSH REL
- 25 ppm
- ACGIH TLV
- 25 ppm
Regulatory Status
- OSHA PEL
- 25 ppm TWA
- NIOSH REL
- 25 ppm TWA
- IDLH
- 100 ppm
- ACGIH TLV
- 25 ppm TWA
- EPA
- Precursor to NAAQS pollutants
- DOT
- Class 2.3 Toxic Gas, UN1660
Detection Requirements
- Sensor Technology
- Electrochemical
- Detection Range
- 0-100 ppm (safety) or 0-1,000 ppm (process)
- Response Time
- <30 seconds (T90)
- Calibration Frequency
- Semi-annual
- Alarm Setpoints
- Low 15 ppm, High 25 ppm (OSHA PEL)
Related Applications
Industries and environments where Nitric Oxide detection is critical
Detection Solutions
Sensors and detectors for Nitric Oxide monitoring
cGas Detector Analog Transmitter
Single channel, analog gas detector with Plug & Play Smart Sensor Technology.
cGas Detector Digital Transmitter
One or two channel Modbus® or BACnet® gas detector with flexible customization options and Plug & Play Smart Sensor Technology.
cGas-SC Self-Contained Controller
A self contained controller with up to 3 gas channels, Plug & Play Smart Sensor Technology and configurable logic control and priority settings. Offers superior user customization and reliable gas detection performance for monitoring many gases.
cGas-SD Sample Draw System
A Self-contained, single sensor sample draw gas detection system that draws sample air from locations where it is difficult to install a gas detector.
Related Gases
Other Toxic Gases we detect