# GrayWolf Sensing Solutions

> Advanced Indoor Air Quality (IAQ) and Environmental Instrumentation. Since 1998, GrayWolf has been a worldwide market leader in portable, datalogging, and long-term fixed monitors for IAQ, Green Building, Toxic Gas, and HVAC applications. Headquarters in Shelton, CT, USA and County Limerick, Ireland.

GrayWolf Sensing Solutions designs and manufactures professional-grade environmental measurement instruments. Products span handheld and fixed-mount meters, smart sensor probes, particulate monitors, HVAC tools, and cloud/mobile software. Primary markets include commercial/industrial buildings, schools, hospitals, government facilities, research institutions, aerospace, and green building certification (LEED, WELL).

## Products

- [IAQ Meters & Monitors](https://graywolfsensing.com/iaq/): Indoor Air Quality meters for handheld, semi-permanent, and long-term monitoring. Measures CO2, VOCs, CO, O3, NO2, NH3, HCHO, %RH, temperature, and more.
- [DirectSense XM Probe](https://graywolfsensing.com/build-your-system/): Modular smart probe with plug-and-play sensors (up to 8 per probe), on-board datalogging, and Wi-Fi connectivity.
- [AdvancedSense XM Meter](https://graywolfsensing.com/iaq/): Purpose-built rugged handheld meter supporting up to 32 simultaneous parameters via multiple DirectSense XM probes plus internal/external sensors.
- [Smart Sensor Specifications](https://graywolfsensing.com/smart-sensor-specifications/): Full specifications for all GrayWolf plug-and-play smart sensors including resolution, range, LOD, and T90 response times for 25+ gases including CO2, TVOC, CO, O3, NO2, NH3, HCHO, H2S, HCN, and more.
- [VOC Meters (TVOC/PID)](https://graywolfsensing.com/directsense-tvoc-volatile-organic-compound-meter-monitor/): PID-based meters for Total VOC detection during IAQ surveys.
- [Toxic Gas Meters](https://graywolfsensing.com/multi-toxic-gas-meter-monitor/): Multi-toxic gas monitors for handheld and long-term exposure measurement (O3, NH3, NO2, CO, and 25+ gas sensors).
- [Formaldehyde Monitor](https://graywolfsensing.com/formaldehyde-monitor/): Dedicated HCHO measurement probes and meters.
- [Particulate Meters](https://graywolfsensing.com/particle-meter/): PM1.0, PM2.5, PM10, TPM particle counters for IAQ and industrial hygiene.
- [Air Velocity Meters](https://graywolfsensing.com/air-velocity-meter/): Hotwire anemometers for HVAC airflow measurement.
- [Pitot-Static Tubes](https://graywolfsensing.com/pitot-static-tubes/): Pitot tube accessories for duct airflow measurement.
- [Differential Pressure – AdvancedSense HVAC](https://graywolfsensing.com/advancedsense-hvac-differential-pressure-meters-micromanometer/): Micromanometer kits for differential pressure, air velocity, and ventilation rate measurement.
- [Differential Pressure – Zephyr XM](https://graywolfsensing.com/zephyr-differential-pressure-meters-micromanometer/): Compact Zephyr XM micromanometer for HVAC and pressurization testing.
- [Green Building IAQ Monitors](https://graywolfsensing.com/green-building-indoor-air-quality-iaq-monitors/): Instruments and configurations for LEED v4, WELL Building Standard, and similar green certification testing.
- [Accessories](https://graywolfsensing.com/accessories/): Belt clips, cases, tripods, calibration kits, and more.
- [Rentals](https://graywolfsensing.com/rentals/): Instrument rental program.

## Software

- [WolfSense PC Software](https://graywolfsensing.com/software/): Desktop data transfer, analysis, and reporting software (Windows 8/10/11).
- [GrayWolfLive Cloud](https://graywolfsensing.com/graywolflive-cloud-iaq-voc-monitoring/): Secure cloud platform for remote real-time access, datalogging, alerts, and dashboards.
- [Advanced Report Generator (ARG)](https://graywolfsensing.com/wolfsense-arg/): Automates generation of detailed IAQ and LEED/WELL reports.
- [WolfSense Mobile App](https://graywolfsensing.com/wolfsensemobile/): Free iOS and Android app for direct Bluetooth LE connection to DirectSense probes.

## Application Notes

- [Air Monitoring in IVF Labs](https://graywolfsensing.com/application-notes/air-monitoring-in-ivf-labs/)
- [Performance Verification of Indoor Air Purification/Filtration Products](https://graywolfsensing.com/application-notes/performance-verification-of-indoor-air-purification-filtration-products/)
- [Environmental Monitoring of Data Centers](https://graywolfsensing.com/application-notes/environmental-monitoring-of-data-centers/)
- [Validating Low Cost IAQ Sensors with High Quality Instrumentation](https://graywolfsensing.com/application-notes/validating-low-cost-iaq-sensors-with-high-quality-instrumentation/)
- [Utilizing PIDs (for VOCs) during IAQ Investigations](https://graywolfsensing.com/application-notes/utilizing-pids-for-vocs-during-iaq-investigations/)
- [GrayWolf Live Applications](https://graywolfsensing.com/wp-content/uploads/2024/05/GrayWolf-Live-Applications.pdf)
- [Measuring Indoor Air Quality in Casinos](https://graywolfsensing.com/wp-content/appnotes/Measuring%20Indoor%20Air%20Quality%20in%20Casinos%20Sept%202015.pdf)
- [Utilizing Portable GrayWolf Meters to Field Test Fixed Sensors](https://graywolfsensing.com/application-notes/utilizing-portable-graywolf-meters-to-field-test-fixed-sensors/)
- [USGBC LEED v4 EQc4 Air Quality Assessment](https://graywolfsensing.com/wp-content/appnotes/LEED-v4-EQc4.pdf)
- [WELL Building Standard v1, Section 18 – Continuous Air Quality Monitoring](https://graywolfsensing.com/wp-content/appnotes/WELL%20Section%2018%20Continuous%20Measurement%20317.pdf)
- [Utilizing GrayWolf for The WELL Building Standard v2](https://graywolfsensing.com/wp-content/pdf/Utilizing-GrayWolf-for-The-WELL-V2-Building-Standard.pdf)
- [Fume Hood Calibration, Face Velocity Testing](https://graywolfsensing.com/wp-content/appnotes/Fume-Hood-Calibration-Application-Note.pdf)
- [Formaldehyde Testing for IAQ Applications](https://graywolfsensing.com/application-notes/formaldehyde-testing-for-iaq-applications/)
- [Measuring for Asthma Triggers](https://graywolfsensing.com/wp-content/appnotes/Asthma%20Trigger%20App%20Note%20615F.pdf)
- [Pre-Screening for ASHRAE 189.1 Post-Construction IAQ Monitoring](https://graywolfsensing.com/wp-content/appnotes/ASHRAE-189-1-Application-Note.pdf)
- [Aircraft Maintenance – Differential Pressure Kits](https://graywolfsensing.com/wp-content/appnotes/Aircraft%20Maintenance.pdf)
- [Ammonia (NH3) Measurement in Livestock and Lab Animal Facilities](https://graywolfsensing.com/wp-content/appnotes/Ammonia%20Measurement%20in%20Livestock%20and%20Lab%20Animal%20Facilities%20715.pdf)
- [BREEAM Hea 02 Indoor Air Quality Assessment](https://graywolfsensing.com/wp-content/appnotes/BREEAMApplicationNoteDec18.pdf)
- [Arc Testing: Instrumentation for the Human Experience](https://graywolfsensing.com/wp-content/appnotes/Arc-Application-Note-1119.pdf)
- [Monitoring Indoor Air Quality in Car Cabins](https://graywolfsensing.com/wp-content/appnotes/Monitoring-%20Indoor-Air-Quality-in-Car-Cabins-219.pdf)
- [Measuring Byproducts of 3D Printing](https://graywolfsensing.com/wp-content/appnotes/MeasuringByproductsof3DPrinting0619.pdf)

## Support & Services

- [Technical Support](https://graywolfsensing.com/support/)
- [Service / Calibration Requests](https://graywolfsensing.com/service/)
- [Custom Demo Requests](https://graywolfsensing.com/custom-demo/)
- [Videos](https://graywolfsensing.com/graywolf-videos/)
- [Customer Portal](https://graywolfsensing.com/customer-selfserve/)
- [Product Literature & Brochures](https://graywolfsensing.com/product-literature/)
- [Application Notes](https://graywolfsensing.com/application-notes/)
- [Frequently Asked Questions (FAQ)](https://graywolfsensing.com/faq/): Common questions about sensor calibration, compatible devices, cloud connectivity, MacOS support, and outdoor use.

## Company

- [About GrayWolf](https://graywolfsensing.com/company-info/)
- [Customer List](https://graywolfsensing.com/customer-list/)
- [Press Releases](https://graywolfsensing.com/press-releases/)
- [Newsletters](https://graywolfsensing.com/newsletters/)
- [Contact Us](https://graywolfsensing.com/contact-us/)

## Contact

- Phone (US): 1-203-402-0477 | Toll Free: 1-800-218-7997
- Email: SalesTeam@GrayWolfSensing.com
- US Address: 6 Research Drive, Shelton, CT 06484, USA
- EU Address: Annacotty Industrial Park, Unit 1C, Annacotty, County Limerick, Ireland

- [Full content](https://graywolfsensing.com/llms-full.txt)