ST3 Series NE-MOS Toxic Gas Sensor


Net Safety’s Millennium II Solid State Nano Enhanced Metal Oxide Semiconductor (NE-MOS) Toxic gas sensor utilizes recent advances in nano engineered materials to dramatically increase the sensor’s sensitivity, selectivity, and stability. Our solid state NE-MOS technology is ideal for dry/hot applications and provides some of the fastest response times available. In addition, our nano-enhanced sensor does not “fall asleep”, has long-life, and recovers quickly from high-concentration gas exposure events, a serious and common issue with traditional MOS sensor materials and electrochemical sensors.

  • SMART Sensor Technology, Transmitter Automatically Recognizes Sensor Configuration
  • Lowest Power Consumption Available
  • Long Range (+2000ft.) Sensor Separation
  • Industry Leading 2 Year Warranty
  • Field Selectable Gas Ranges (20/50/100 ppm)
  • Recovers Quickly from High H2S Gas Concentrations
  • Fine-tuned Specific Response Ensures Accurate Detection, Even In The Presence of Other Gases
  • Designed to Perform in the Most Extreme Industrial Environments
Single Channel, Dual Channel, and BASIC Transmitter Options Available
There’s no longer the need to purchase multiple gas specific detectors. You have the option to utilize 1 or 2 toxic and/or combustible gas sensors on a single Millennium II transmitter and easily mix and match any sensor technologies.

SMART Sensor Technology
SMART (Self Monitoring Analysis and Reporting Technology) sensors are pre-calibrated and easily connected to the transmitter which instantly recognizes a newly fitted sensor, automatically uploading it’s specific configuration profile.

Digital Communications
Sensor and transmitter continuously communicate digitally, giving you the confidence of stable, accurate protection with fast response times even over long separation distances.

Global Certifications
The ST3 Series has been approved to international hazardous area safety standards for functional operation and performance.

Nano-technology Enhanced Sensing
Sensor utilizes recent advances in nano-engineered materials to dramatically increase the sensor’s sensitivity, selectivity, and stability. This technology is quite robust and ideal for dry/hot applications, provides leading response times, and the sensor does not “fall asleep”, a common issue with traditional MOS sensing materials.

Advanced Environmental Immunity
The ST3 Series of toxic gas sensors are all internally temperature-compensated to their target gas as well as the particular field-selected range (20/50/100 ppm) in order to provide as stable a sample as possible to the sensing element.

P/N: ST321(A/S)-100-ASSY

Response Time: T20 ≤ 7 sec | T50 ≤ 13 sec | T90 ≤ 17 sec
Accuracy: (+/–) 2 ppm
Detection Range: 0­­—20/50/100 ppm (Field Selectable)
Zero Drift: 2 ppm over 6 months
Repeatability: (+/–) 1ppm or 5% full scale
Temperature: -40°C to +60°C (-40°F to 140°F)
Relative Humidity: 0–95% RH non condensing
IP/NEMA Rating: IP64 – NEMA 4X
Metallurgy: Aluminum or 316 SS
Sensor Separation: Up to 2000 feet/600 meters (18 AWG cabling)
Transmitter Req’d: Millennium II Series (M21, M22, M2B)
Warranty: 2 years
Price: $0.00