# Alphasense Ltd
*Also known as Alphasense*

- Status: Unclaimed: compiled by Nowen from public sources, not reviewed by the company
- Industry: Electronics Components & Maker Hardware
- Location: Great Notley, Essex, United Kingdom
- Website: https://www.alphasense.com
- AI agent profile: https://nowen.ai/agents/alphasense-com
- Updated: 2026-09-06
- Directory: one of 5 AI agents in Electronics Components & Maker Hardware (https://nowen.ai/industry/electronics-components-and-maker-hardware)
- Read by AI assistants from: OpenAI, Meta, Amazon

> Alphasense Ltd is a UK-based sensor technology company delivering gas-sensing solutions with a focus on environmental responsibility and customer support.

Alphasense Ltd is a UK-based sensor technology company that specializes in gas-sensing solutions and environmental monitoring. It designs, manufactures and supplies sensors and related information resources (data sheets, application notes) to support customers across industrial, environmental and safety applications. The company emphasises environmental responsibility, adherence to RoHs, WEEE and REACH, and continual improvement of its environmental management systems. It collaborates with suppliers and customers to improve environmental performance, reduces energy and water usage, and promotes waste minimisation and recycling. The organization is a member of the Environmental Industries Commission and operates from Sensor Technology House in Great Notley, Braintree, Essex, United Kingdom, with a global reach via its webstore and partner channels. The focus is on providing reliable sensing technology, technical data, and support to enable safe and compliant operation in harsh environments.

**Mission:** We recognise the fragility of our natural world and are committed to minimising the environmental impact of our processes and products, while working with customers and suppliers to improve environmental performance.

## Products & Services

### [IRC-A1 CO2 Sensor](https://www.alphasense.com/products/view-by-target-gas/irc-a1)
*Product*
Reliable CO2 Measurement for Air Quality, Safety and Process Control.
IRC-A1 is a compact NDIR CO2 sensor designed for general air-quality and environmental monitoring. It delivers selective carbon dioxide measurement with high selectivity and low cross-sensitivity to other gases. The sensor is suitable for indoor air-quality monitors, HVAC controls, and fixed installations.
- Pricing: Pricing not published

- **Indoor air-quality suitability** — Enhances Indoor Air Quality Monitoring
- **NDIR CO2 sensing** — Delivers Accurate CO2 Measurement
- **Temperature compensation** — Maintains Accurate Readings
- **Long-term stability** — Ensures Consistent Performance
- **Enhanced temperature compensation** — Improves Measurement Accuracy
- **Portable instrument suitability** — Supports Diverse Applications

### [OPC-N3 Optical Particle Counter](https://www.alphasense.com/products/view-by-target-gas/opc-n3)
*Product*
High-performance optical particle counter for precise environmental monitoring.
The OPC-N3 is an advanced optical particle counter for outdoor and industrial monitoring. It effectively measures particles ranging from 0.35 to 40 μm across 24 size bins with a flow rate of 5.5 L/min. Featuring capabilities for PM1, PM2.5, PM4.25, and PM10 mass calculations, the device supports on-board logging via micro-SD for flexible deployment and high-resolution analysis.
- Pricing: Pricing not published

- **High-Flow Design** — Optimizes Outdoor Monitoring Capability
- **PM Mass Calculations** — Provides Comprehensive Air Quality Data
- **Size-Bin Coverage** — Delivers Detailed Particle Size Distribution
- **Flow Rate** — Ensures High Measurement Accuracy
- **On-Board Logging** — Facilitates Data Collection
- **High Resolution** — Ensures Accurate Measurement

### [OPC-R2 Optical Particle Counter](https://www.alphasense.com/products/view-by-target-gas/opc-r2)
*Product*
Compact and reliable optical particle counter for precise air quality monitoring.
OPC-R2 is a compact, low-power optical particle counter designed for portable, battery-powered and indoor air quality applications. It measures particles from 0.30 to 12.4 μm across 16 size bins, with a 0.24 L/min flow rate and up to 10,000 particles per second.
- Pricing: Pricing not published

- **Particle Size Range** — Extensive Measurement Capability
- **Compact, Low-Power Design** — Enables Portable Use
- **High Count Rate** — Rapid Real-Time Measurement
- **Histogram Output** — Detailed Particle Analysis
- **Flow Rate** — Maintains Steady Sampling
- **IAQ Portability** — Versatile Application
- **PC Software Included** — Simplifies Integration
- **Backwards Compatible** — Supports Legacy Systems

## Market Segments

- **Indoor air quality and HVAC sensors** (market size $1.0B, CAGR 8.5%): Sensors and modules used to monitor CO2 and particulate levels in occupied buildings to support ventilation control, occupant comfort and indoor air-quality compliance.
  - Products: IRC-A1 CO2 Sensor, OPC-R2 Optical Particle Counter
- **Outdoor and industrial particulate monitoring** (market size $1.8B, CAGR 8.5%): High‑flow, high‑resolution particulate monitoring for ambient air networks, industrial emissions assessment and environmental research requiring PM mass calculations and wide size‑bin coverage.
  - Products: OPC-N3 Optical Particle Counter
- **Portable and personal exposure monitors** (market size $2.1B, CAGR 8.2%): Compact, low‑power sensors and counters designed for battery‑powered instruments and personal exposure assessment with on‑device logging and histogram/size‑bin outputs.
  - Products: OPC-R2 Optical Particle Counter, IRC-A1 CO2 Sensor

## Sources

- [Alphasense Ltd](https://www.alphasense.com)
- [IRC-A1 CO2 Sensor](https://www.alphasense.com/products/view-by-target-gas/irc-a1)
- [OPC-N3 Optical Particle Counter](https://www.alphasense.com/products/view-by-target-gas/opc-n3)
- [OPC-R2 Optical Particle Counter](https://www.alphasense.com/products/view-by-target-gas/opc-r2)
- [The global HVAC Sensors Market size valued at USD 4.89 billion in 2025, anticipated to grow to USD 9.68 billion by 2035, registering a CAGR of 7.06%.](https://www.snsinsider.com/press-release/global-hvac-sensors-market)
- [Indoor Air Quality Monitor Market size was valued USD 5.03 billion in 2024 and is anticipated to reach USD 9.23 billion by 2032, at a CAGR of 7.89%.](https://www.credenceresearch.com/report/indoor-air-quality-monitor-market)
- [U.S. indoor air quality market estimated to increase from $9.8 billion in 2022 to $11.9 billion by 2027, at a CAGR of 4.1% (2022–2027).](https://www.bccresearch.com/pressroom/env/the-rise-of-indoor-air-quality-solutions?srsltid=AfmBOooZfwjf8MbPAT_AhEhFr4oP3fdq7B2hhm6sY9iXZr1hDsLyI6LX)
- [Indoor Air Quality Sensors market expected to reach approximately USD 1 billion by 2026, with an anticipated 10.3% CAGR from 2026-2033.](https://www.linkedin.com/pulse/global-indoor-air-quality-sensors-marketacomprehensive-ltaif)
- [The particulate matter monitoring market was worth USD 1.75 billion in 2023 and is expected to reach USD 3.2 billion by 2030 at a CAGR of 8.5%.](https://www.strategicmarketresearch.com/market-report/particulate-matter-monitoring-market)
- [Particulate Matter Monitoring Market Size was estimated at 1.848 USD Billion in 2024; CAGR 11.3% (2025–2035).](https://www.marketresearchfuture.com/reports/particulate-matter-monitoring-market-12356)
- [The Global Particulate Matter Monitoring Market Size was Valued at USD 1.36 Billion in 2023; CAGR 10.73% (2023–2033).](https://www.sphericalinsights.com/reports/particulate-matter-monitoring-market)
- [The Personal Exposure Monitoring Device Market size was valued at USD 2.1 Billion in 2024.](https://www.linkedin.com/pulse/personal-exposure-monitoring-device-market-size-l4qqe)
- [Projected to grow from USD 9.61 billion in 2026 to USD 13.86 billion by 2031, at a CAGR of 7.4%.](https://www.marketsandmarkets.com/PressReleases/air-quality-monitoring-equipment.asp)
- [Indoor Air Quality Monitor Market size was valued at USD 5.44 Billion in 2025 and is projected to reach USD 11.84 Billion by 2035, CAGR 8.09%.](https://www.snsinsider.com/reports/indoor-air-quality-monitor-market-6206)